The energy imparted to a structure from earth quakes is dissipated by damping, if the earth quake is large enough; it is accompanied by plastic yielding. The damping energy is associated with inherent structural damping of the conventional members, and the external damping contributed by the structural control systems, such as viscoelastic (VE) damper and active bracing system (ABS) .The strain energy is composed of recoverable elastic strain energy and irrecoverable hysteretic energy due to plastic yielding known as yield strain energy. Yielding is inelastic behaviour of the structures subjected to large earth quakes ,Theoretically, the inelastic behavior can be described by plastic zone approach or elastic plastic hinge model . The plastic zone approach approach considers explicitly the gradual spread of yielding throughout the volume of the structure, such residual stresses and geometric imperfections and the material strain hardening .The elastic plastic hinge model assumes that inelastic behavior is concentrated at the plastic hinge location.
In recent years, new ideas for the structural integrity and structural control motion have been developed. A procedure for designing the full scale ABS control system for an earth quake was also presented .the stiffness and the damping ratio of the viscoelastic damper were estimated based on the energy based systems. The number, size, and the optimal location of the VE dampers for supporting the structure and their effects on stiffness and the damping ratio were studied by the Zhang and Soong in 1992
THEORY
An active structure is a structure composed of two types of load resisting members: Conventional static members designed to support static loads and active braces or active variable stiffness members designed to resist dynamic loads. The structure is optimally designed structure in terms of minimizing its cost while obtaining the optimal control forces for the active control systems. The cost of the structure is expressed in terms of structural volume, the structural design variables are the member areas and the control variables are the optimal control forces.
The design of active structures was also addressed by Cheng and Pantelides and Pantelides who formulated the active structure problem in two stages: first, the optimal control was expressed in the closed form as implicit functions of the design variables (moment of inertia of the structural members); and second, the design variables where modified iteratively in order to minimize the structural volume with constraints imposed on the structural response. The definition of the active structures can be extended to include. In addition to the active control system, not only purely static members, but passive control members such as viscoelastic dampers as well.
In the present paper, the energy dissipation is expressed in terms of:
- The inherent damping from the conventional structural and non structural members of the structure—the inherent structural damp of the structures is assumed to be present at fixed level;.
- The yielding of the conventional members ;and
- The external damping and the stiffness contribution of the passive structural control (VE dampers), and the active structural control (ABS) systems.
The optimal design of the conventional members of the active structures is investigated in terms of minimizing the structural volume while satisfying the structural response constraints during an earthquake. Structures equipped with VE dampers or ABS control systems are considered. The influence of inherent structural damping on the optimum designs is investigated.
The following optimal designs are done:
- The optimal design of the 10 storey frame with different levels of inherent structural damping
- The optimal design of the 10 storey frame with the two ABS controllers
- The optimal design of the 10 storey frame with the two VE dampers
- The optimal design of the 10 storey frame with the one ABS controller and one VE damper
A ten storey frame shown in Fig1 with different assumed levels of inherent structural damping is used to demonstrate the optimal design of the conventional members of the active structure .Three cases are discussed
a) One active bracing system (ABS) installed on the first floor and one ABS on the second floor
b) One viscoelastic (VE) damper on the first floor VE damper on the second floor
- One ABS on the first floor and one viscoelastic VE damper on the second floor.
The optimal design of conventional members of the structures is expressed as follows: minimize the structural volume subject to drift constraints between floors j and (j-1), and stress constraints for the conventional structure members. No constraints are imposed on the damping level to be achieved. It should be noted that for the optimization, linear behavior of the structural members is assumed. The objective of the optimization is to minimize the structural volume of the convention members of the structure. This measure represents the cost of the conventional structural system. The design variables are defined as the cross sectional areas of the structural members. The moment of inertia I, of the steel frame members can be obtained using well known relations as follows. (Haug .E.I and Arora ,J.S.)
where Zb, Si ,Ai are the sectional modulus ,the least radius of gyration and the cross sectional area of the ith element; αi βi and χi are constants and equal to 0.58,0.58and 0.67 respectively. The allowable combined bending and axial stress for each conventional member of the steel frame is assumed as 150MPa, and the allowable inter storey drift for each floor is set at h/180. Where h=floor height, which is 2.5cms for the first floor, and 2.0cms for the second up to the 10th floor.
In cases (1) and (3) the maximum control forces of the ABS controllers are limited to less than 20% of excitation lateral force. The next section describes how the optimal dimensions of the VE dampers can be obtained for an increased effective damping ratio. The strong column-weak beam philosophy of the design codes is also implemented.
A modified iterated simulating and annealing (MISA) method (Tzan,S.R and Pantelides.C.P.) is used for optimal design. This method was found to be advantages for the optimization of structural systems with constrains arising from the dynamic excitation such as earthquakes.
Optimization techniques have for most part focused on structural optimization of systems with the static constrains. When the dynamic or time varying constraints are imposed, as in the case of the buildings in earth quakes, the feasible region becomes disjoint and the local minima exist A modified annealing method with sensitivity analysis and automatic reduction of the search range was recently presented by Tzan and Pantelides .The latter strategy was found to be advantageous for optimization of the structural systems with constraints arising from dynamic loading as compared to classical optimal design methods.
The optimal configuration and dimension design of VE dampers in a building is also studied. The optimal number, location and cross-section area are found for increasing effective damping ratio for structures with different assumed inherent damping levels. The optimal design of constant number of VE dampers for different effective damping level is also examined.
Finally the elastic and inelastic analysis conventional and active structures equipped with ABS controls are performed. In these analysis the energy time histories and in particular the energy dissipation of conventional and active structures in term of the effective damping and yielding are contrasted. The number of yielding events in the structure elements of conventional and active structures undergoing inelastic deformation is examined for different earthquakes.
ENERGY DISSIPATION AND ITS DISTRIBUTION IN THE SEISMIC STRUCTURE
The input energy imparted to the structure by the earth quake is dissipated by damping associated with the conventional members as well as any passive and/or active control systems, and by yielding of the structural members when the inelastic behaviors develops. .The energy terms can defined by integrating the equation of the motion of the structure as
Where are the resisting forces in the yielding members of the system .(Chopra.A.K) In equation (1).m=mass matrix, c*=damping matrix for the structure control system which includes the effect of the inherent structural damping and that of the passive and /or active control systems xg(t) is the horizontal ground acceleration, and x,x and x are the relative displacement ,velocity and the acceleration response of the dynamic degrees of freedom. Equation (1) can be described in terms of the energy of the system as
are the kinetic energy associated with the motion of the structure relative to the ground, the damping energy, the yield strain energy, the elastic strain (recoverable strain)energy and the input energy.
These energies defined as
Where k=elastic stiffness matrix
Note that Equation (3d) equals zero when the linear elastic structural system is considered .The damping energy is provided by the inherent structural damping which is assumed to exist at the certain fixed level, as well as the additional external damping due to structural control systems.
In this paper, the passive system considered is viscoelastic (VE) damper and the active control system considered is active bracing system (ABS) .The instantaneous optimal control (Yang. J.N., Akbarpur, A and Ghammaghmi .P) algorithm is used for the seismic structures equipped with the ABS. A. time dependent performance index. J(t) was defined
where ZT(t) is the transpose of the state vector; ZT(t)={x(t),x(t)}T and x(t), and x(t) are the relative displacement and the velocity responses of the structure and R are the weighing matrices chosen by the designer. The optimal control force ,can be obtained by minimizing J subject to the constraint of the equation of the motion .Matrix Q in the equation(4) is usually assigned to be an identity matrix and R is a diagonal matrix multiplied by a constant, r, at the non zero elements of the diagonal
The equation of the motion is expressed as
Where m, c and k are the N*N mass, damping and stiffness matrices, N being the number be the number of degrees of freedom. Note that the c includes the contribution of inherent structural damping, which is assumed to exist at the certain fixed level, and that of the passive control structures such as viscoelastic dampers, if present is the N*m matrix which defines the ABS controller locations with respect to the structure topology ,m being the number of controllers; δ is effective loading vector which for the building under earth quake excitation is δT ={-m1, -m 2 ………--.mn } Where mi the mass of the mass ith floor, CABS is the equivalent damping matrix due to the presence of the active structural control and ∆t is the time step at which the control force is evaluated. Equation (5) can be used to obtain the response of the structure equipped with the ABS control system and /or viscoelastic damper during an earth quake.
In the recent years, the material properties of the VE dampers have been studied by the Chang et al and Kasai et.al. In this paper, a frequency dependent calculation for the contribution of the VE dampers through the shear and the loss factors. G′ and G″, is considered. The VE damper contribution to the damping and stiffness matrices of the system is derived based on the parameters G′ and G″ evaluated at the natural frequencies of the structure(Tzan.S.R and Pantelides C.P.,)A frequent dependent effective damping ratio is implemented as
where .G′ and G″ can be found by substituting ωo,j the jth mode natural frequency of the structure ζo,j is the jth mode inherent structural damping ratio ; the η is the damper loss factor j is the jth modal shape function ;and K b and Ks are the stiffness matrices of the structure without VE dampers and with the additional VE dampers, respectively .Thus the damping contribution of the first n nodes is uniquely determined through the damping ratio of the equation (6) and is considered invariant with respect to the remaining excitation frequencies .The stiffness of the VE damper ,K d can be expressed as
where A and th are the cross sectional area and the thickness of the VE damper β=cosθ
and θ is the damper inclination with respect to the horizontal directions. It should be noted that only fundamental mode parameters G′( ωo,1) and G″( ωo,1) are used to determine the VE damper stiffness.
OPTIMAL DESIGN OF ACTIVE STRUCTURES
a. OPTIMAL DESIGN OF THE CONVENTIONAL STRUCTURE.
The optimal design of the conventional structure with an assumed value of inherent structural damping level of 1 to 5% of critical is taken for all the modes in each of three cases and are are fixed through the optimization. A time history approach is used for the analysis required for the optimization procedure. The 18 May 1940 El-Centro is used as earthquake excitation. The minimum volume of the optimal structure is decreased as inherent structural damping is increased.
b. OPTIMAL DESIGN OF THE ACTIVE STRUCTURE.
The 10 storey frame shown in Fig 1 with the different assumed levels of the inherent structural damping is used to optimal design of the conventional members of the active structure
Three cases are discussed
1) One active bracing system (ABS) installed on the first floor and one ABS on the second floor
2) One viscoelastic (VE) damper on the first floor one viscoelastic (VE) damper second floor
3) one active bracing system (ABS) installed on the first floor one viscoelastic (VE) damper second floor .
The inherent structural damping levels range from 1 to 5% of the critical for all modes in each of the three cases under fixed at these levels through the optimization. The 1940 El-Centro earthquake is used as the earthquake excitation. The minimum value of the active structure is compared with that of the conventional structures is shown fig 2-4. The volume of the optimal structures is decreased as the effective damping level is increased for all active structures.
A relationship between the effective damping and optimal value of the active structures by comparing cases 1-3 is shown in fig 5. In general, the minimum volume of the active structure is inversely proportional to first mode effective damping ratio for all three structural control cases. The comparison of additional damping introduced in the first mode by the control systems in the three cases with respect to the assumed structural damping, is shown in fig 6
For the same level of inherent structural damping, the additional damping introduced by the VE dampers (Case 2) is on average 0.6% less than that of the active bracing system. (case1), and 0.9% less than that of combined system (case 3). A specific cross-sectional area of the VE dampers and the maximum control force of the ABS controller were chosen for the active structures to achieve a comparable level of performance. The aim of comparison is not to run a competition among the three cases of active cases, but to demonstrate that reduction of the structural volume (cost) can be achieved by more than one way. All three structural control systems reduce the optimal volume of the active structure by 23% on average as compared to volume of the optimal conventional structure. Fig 7 shows the ratio of the optimal volume of the active structure to that of conventional structures. For different levels of assumed inherent structural damping for the structure with an assumed inherent structural damping of 1% of critical the reduction of structural volume is more pronounced (35% on average). Note that the structural volume reduction achieved each of three active structures equipped with two ABS, two VE damper and one ABS and one VE damper on an average, for all inherent damping ratios 23,.21 and 25% less than the conventional structural optimal volume. This indicates that the cost of the conventional structural system could be reduced if the presence of active or passive structural control is taken into account at the design stage.
c. OPTIMAL DESIGN OF VE DAMPER
An optimization method is used to design the minimum size of the viscoelastic damper for achieving an increased effective damping level of the structural system.
The modified method of feasible directions is used to optimize the required cross sectional area of the VE dampers on the different floors of the structure.
The parameters G′ and G″ of the VE dampers in equation (6) are determined at the natural frequency of each building. The damping ratios are used as a bench mark to find the optimum area required for the VE damper.
The optimal design of the VE damper is expressed as follows: minimize the cross sectional area of the VE dampers subject to a constraint on the first mode effective damping level. The side constraint for the maximum and minimum sizes of the VE damper is done. It can be observed that for a certain number of dampers, the total VE damper cross sectional area obtained from the optimal design is less than the area required by using the same uniform size for each damper. For example, the required VE damper area when the building is equipped with the damper at each floor obtained from the optimal design is about 38% less compared to the design using the same uniform m size for the each damper .
Thus the optimization can be obtained in both material (cross-sectional area of the VE damper) and in labour (installation of three verses five dampers).
The optimal designs using the constant number of the VE dampers but the different level of the effective damping ratio are also investigated. By increasing the size of the VE damper one can increase the effective damping level for the same numbers of the VE dampers located in the structures. However for the same level of the effective damping, the structures equipped with the VE dampers on the first and the second floors only, requires the more material than that equipped with the VE dampers on the first, second, third and fourth floors .For the 10 storey frame,if only first and the second floors are equipped with the VE dampers, the structure cannot even reach the effective damping level of 25%of critical
INELASTIC ANALYSIS OF CONVENTIONAL AND ACTIVE STRUCTURES.
An inelastic analysis carried out in this section using finite element software DRAIN-2DX for both conventional and active structures. A ten story steel frame with an assumed inherent structural damping level of 5% of critical in all the modes is used to investigate the inelastic behavior of elastic plastic structures. The strain hardening ratio is assumed as 0.0588. The beam and the beam column conventional members of the frame are assumed to be structural steel W-shapes. The yield moments and the moment of inertia of the conventional structural elements are shown in above table
The yield moments for positive and negative bending moments are assumed to be same.
Three earthquake excitations are selected by scaling two earthquake records to have the same global energy
- The1971 San Fernando earthquake.
- The scaled 1940 El- Centro earthquake and the
- The scaled 1994 Northridge earthquake.
The peak acceleration duration and global energy bound of the three earthquake excitations as shown in the below table.
The maximum response in terms of displacement, drift velocity and acceleration at each floor is shown in figs for San Fernando earthquake. The displacement, drift, velocity, and acceleration response obtained by the elastic analysis are on average 27, 31, 33, and 20% larger than those obtained by the inelastic analysis. Similar results can be observed for the scaled records of 1940 El_centro earthquake and the 1994 Northridge earthquake. In general the maximum responses obtained from the elastic analysis were more conservative than those obtained from the inelastic analysis if significant yielding events had occurred.
However, the permanent deformation can only be determined from the inelastic analysis.
After peak ground acceleration occurs, the structure maintains some permanent deformation. The permanent deformation for the each floor of the structure shown in the fig13. The permanent deformation for the structure subjected to scaled record of the 1994 Northridge earthquake is larger compared to the other earthquake records.
The Fig 12 shows the time history displacement of the 10th floor displacement obtained from the three exications shown in the table 11 for both elastic and inelastic analysis
The energy time history of the elastic analysis for the structure subjected to 1991 San Fernando earthquake and the scaled records of the 1940 El-Centro and 1994 Northridge earthquakes are compared in the figs 14-16 .It can be observed that the damping energy reduces when the yielding occurs. This is because in the inelastic analysis the input energy is dissipated by the structural damping as well as yielding.
Two active structures whose conventional members can develop elastic plastic behavior are studied in this section. In the first case the 10 story frame equipped with an ABS on the first and the second floor is used. The control force is constrained to a maximum of 20% of the excitation effective lateral force. The effective lateral force is determined by multiplying the total mass of the structure by the peak acceleration of the excitation. The effective damping for the first two modes of this active structure is equal to 10.6 and 16.8% of the critical, respectively. In the second case, the 10 storey frame is equipped with one ABS controller on each of first, second, third and fourth floors. The control force is also constrained to a maximum of 20% of the excitation effective lateral force. The effective damping level for this active structure equals 20.6 and 27.6% of the critical for the first second modes respectively.
The structure response for the cases stated above is compared to the structure without the ABS structural controls. The displacement, drift, velocity and acceleration response reduction obtained for the three earthquake records of table 11 is shown in the table 12.
In general the structures with 4 ABS structural controls can reduce the response even more compared to the structure with only 2 ABS. The displacement response for the structure with the two ABS structural controls was an average 9 to 16% less than that of the structure without control. The displacement response for the structure with 4 ABS structural controls was reduced by the 29 to 35% on average.
More importantly, the additional structural control system not only reduces the dynamic response of the structure, but also reduces the yielding events which occur in the structure.
Fig 17 shows the number of yielding events as a function of time for the three structures stated above in the 1971 San Fernando earthquake. The total number of yielding events is only two thirds of those of the uncontrolled systems, for the structure equipped with the two ABS and only one third for the structure with four ABS Fig 18 and 19 show a breakdown of yielding events with respect to beam and column members of the structure. Yielding in the column occurred only in the columns of the first floor. Similar results can also be observed from the scaled records of 1940 El-Centro earthquake and 1994 Northridge earthquake, the total number of yielding events for the three cases is shown in table 13.The total number of yielding for the active structures with two ABS is reduced to half compared to the conventional structure; the number of yielding events for the active structures with 4 ABS is much less..
CONCLUSIONS
The assumed inherent the damping level of the structure due to its structure and non structural members affects the optimal design of conventional and active structures for earthquake excitation. Larger inherent damping levels require a smaller structural volume. For the active structures, as the effective damping ratio increases, the structural volume decreases approximately in a linear fashion regardless of the source of the external damping i.e. active or passive. This has the implication for the design of economical structures equipped with active or passive control systems.
The optimization of the cross sectional a dimension of the VE dampers has been presented for the structures under earthquake excitation. The procedure not only produces the dimensions of the dampers, but also their optimal number and the location required to achieve a target effective damping level.
The inelastic analysis of the active structures with a number of ABS controllers have shown that the yielding of the conventional members reduces the peak structural response and the total input earthquake energy. The structural control systems in the active structures reduce the peak structural response as well as the number of the yielding events when compared to conventional structures.
This Is An Excellent Post I Seen. I Have To Thanks To You To Share It It Is Really What I Wanted To See Hope In Future You Will Continue For Sharing.
ReplyDeleteActive Damper System
Thanks for this amazing article on ACTIVE AND PASSIVE CONTROL SYSTEMS CONSIDERING EARTH QUAKE EXCITATION
ReplyDeletewas Just searching for 7 Simple Roof Maintenance Tips to Ensure a Healthy Roof and found this amazing website of yours.
construction companies in islamabad
ReplyDeleteconstruction companies in islamabad
construction companies in islamabad
construction companies in islamabad
construction companies in islamabad
construction companies in islamabad
construction companies in islamabad
construction companies in islamabad
construction companies in islamabad
Thanks for sharing very useful information
ReplyDeletecontracting companies in dubai
Engineered floorboards are made of different kinds of wood pressed together. These Timber floorings are more affordable than hardwood and give the same look and feel. However, they can be sanded and re-finished to a lesser extent.
ReplyDeleteTimber Flooring in Hoppers Crossing
Laminate Flooring in Hoppers Crossing
Carpet Flooring in Hoppers Crossing
draws are good
ReplyDeleteAGR Roofing & Construction
AGR Roofing & Construction
AGR Roofing & Construction
i really made my day to clikc
ReplyDeleteAGR Roofing & Construction
AGR Roofing & Construction
AGR Roofing & Construction
rock on best way
ReplyDeleteAGR Roofing & Construction
AGR Roofing & Construction
AGR Roofing & Construction
Littleton Colorado roof repair
ReplyDeleteLittleton Colorado roof repair
Littleton Colorado roof repair
Littleton Colorado roof repair
Littleton Colorado roof repair
ReplyDeleteLittleton Colorado roof repair
Littleton residential roofers
Littleton residential roofers
ReplyDeleteLittleton residential roofers
Littleton residential roofers
Roofers Littleton
ReplyDeleteRoofers Littleton
Roofers Littleton
Roofers Littleton
Best Guest Post Network
ReplyDeleteRank2Google For Business
Salon Jobs Near Me
Technical SEO & Reputation Management
Littleton roofing company
ReplyDeleteLittleton roofing company
Littleton roofing company
Littleton roofing company
Thank you this information.Welcome to best IT solution in saudi arabia Almuskgroup
ReplyDeleteThank you for this information.welcome to best civil construction companies in saudi arabia
ReplyDeletedid you find here best homework help in science service ? so stronglly suggestion check this and know more
ReplyDeletemyassignmenthelp is the top Asignmenthelp company if you think can i see myassignmenthelp review it is legal ? so strongly suggestion check this myassignmenthelp legit
ReplyDeletedo you find best
ReplyDeleteassignment help experts company i for students , here i know essaygator is the top leading assignment expertrs company where they provide best experts
Myassignmenthelp provide best
ReplyDeletemass communication assignment help service where thier experts are teach you very well and get best resuly
Great stuff
ReplyDeleteThank you for this information.welcome
did you think
myassignmenthelp legit so i am shaing a soire go and check them
do you find the review of myasignmenthelp so i ams haring a link strongly suggestion check this and know more myassignmenthelp legit
ReplyDeleteessaygator is the top leading assignment help experts company
ReplyDeletewhere they provide best experts for assignment
Thus, you need to think about the right option that is finance assignment help. This option helps you to face today’s tough competition. Sometimes, you can’t get enough time to gather all the essential information about the subject.
ReplyDeleteMy brother recommended I might like this blog. He was entirely right. This post actually made my day. You can not imagine just how much time I had spent for this information! Thanks! drone building inspections nashville
ReplyDeleteVery significant Information for us, I have think the representation of this Information is actually superb one. This is my first visit to your site. eResource Scheduler
ReplyDeleteminitool partition wizard crack
ReplyDeleteexpress vpn crack
fabcon
This comment has been removed by the author.
ReplyDeleteHey! I loved how smartly you have placed the words in this post. It’s definitely insightful. Some sections are ye openers. I agree that it is difficult to get away from the burden of academic assignments but there definitely is an effective way out. The Assignment Help Adelaide service by the LiveWebTutors platform is well-known for offering 100% original and premium quality outcomes that can fetch the best grades for you.
ReplyDeleteYou have a real ability for writing unique content. I like how you think and the way you represent your views in this article. I agree with your way of thinking. Thank you for sharing. https://westasianetwork.com/ashford-formula-saudi-arabia.php
ReplyDeleteHello there! This is my first visit to your blog! We are a team of volunteers and starting a new initiative in a community in the same niche. Your blog provided us valuable information to work on. You have done a marvellous job! stairwell platform system
ReplyDeleteVery interesting and valuable information you have shared in this post. I am appreciating you for taking the time to share these equations and solutions. I also provide Law assignment help UK at cheap price to fulfill studnets academic requirements.
ReplyDeleteThanks for sharing this valuable news and updates. I am digital marketing expert and I see some mistakes in your site. You should get help from our web design company expert team for grow your site to the next level.
ReplyDeleteWonderful blog and valuable information. We provide sop help. We have best team members who support you at any level with there best service.
ReplyDelete
ReplyDeleteExpert Market Research share latest report, ‘Europe market price of shrimp Report and Forecast 2022-2027’, gives in-depth analysis of the Europe Shrimp Market, assessing the market based on its segments like environment, growth, processed product type, distribution channel, segment, and major regions. This report tracks the latest strategy and upcoming trends in the industry.
The students of Sydney who are going to do higher study have to face difficulties with
ReplyDeleteassignment writing. Every student wants a good score in their whole career because a
good result can take one step forward toward a bright career. The students are not that
capable to write great and genuine assignment content. So, they need the specialist’s
guidance in creating a good scoring assignment writing. If you can relate to this
situation and suffer from too much assignment pressure then you can ask for help
from assignment Help Sydney. Our writer will bring you the best assignment as per
your necessity. The expert follows the actual University guidelines and creates
high-quality assignment writing that enables you to achieve an excellent score. You
can get the best assignment help from Assignment Help Sydney at a very
student-friendly price. Thinking too much will only make you worried and your all
precious time will get killed. So, we are open to your assignment writing, where you
will not get a chance to regret choosing Assignment Help Sydney.
https://www.onlinetutorhelps.com/assignment-help-in-sydney/
As
signment Help In sydney
Mental Health is an important part of Nursing. If you do the nursing duty you have to take
ReplyDeletecare of mental health as well as physical health. If you are pursuing a Nursing course you can
be upbringing your skill to recognize a patient's need, by this you can give the best possible
treatment. During this study course, nursing students are taught how to use the appropriate
skill and techniques to manage the treatment of a patient's mental health. The students have to
face difficulties to write nursing assignments on Mental Health. If you are facing the same
our Mental Health Nursing Assignment Help gives you the best solution to this. We ensure
to give you the best Mental Health Nursing Assignment as per your requirement at a very
cheap service charge. We can write for you in your preferred language and our experts are
always following the university rules. We have many satisfied clients, you can check the
review part. So, do not hesitate to connect with us and our Mental Health Nursing
Assignment Help assures you to bring the desired score for you.
https://www.onlinetutorhelps.com/mental-health-nursing-assignment-help/
Mental
Health Nursing Assignment Help
very nice blog i also inspired of your blog Get Journalism Assignment Help at affordable price.
ReplyDeleteModern Nightstands are important for your bedroom, not only for their function but also for their design. If you're looking to add a nightstand that's both functional and stylish then look no further than Grayson Living. We have a wide variety of styles including mirrored nightstands and in-stock bedside tables available at affordable prices with free shipping nationwide!
ReplyDeleteThe Italian Dining Table And Chairs is a unique piece that will create an elegant, sophisticated atmosphere in any room. The italian dining furniture can be used for formal dinners or casual family meals, making it perfect for both large gatherings and intimate conversations. With various shapes and sizes available, there's a set of this beautiful italian furniture to fit every home's needs.
ReplyDeleteGrayson Home's Modern Shelves are the perfect solution for storing your items. Modern shelving is not just about storing things but also about adding to the look of a room. With all types of styles, colors and materials available you can find one that fits your home perfectly. Modern shelving is not just about storage - it's about making life easier with stylish and functional designs that fit any decorating needs!
ReplyDeleteYes, I am very happy to read this one. This blog is really helpful for students who face some issue in active passive. Thanks for sharing this blog. Now it's time to avail jupiter florida airport for more information.
ReplyDeleteOne of the most significant advantages of entertainment websites ifovd Tv
ReplyDeleteis the convenience they offer. Gone are the days of having to wait for a show to air on television or having to physically go to a store to purchase a movie.
It is very helpful information related to the earthquake. I found this website randomly but I like it very much. It contains a very useful content. Thankyou for sharing with us. Now its time to avail Car Services in Orlando for more information.
ReplyDeleteIt is truly a great and helpful piece of info. I’m satisfied that you just shared this helpful information with us. Please keep us up to date like this. Thanks for sharing. Now read more about Best Vat Account Services in Dubai for more information.
ReplyDeleteThis is very useful website. I like this website . Good information.Rajshahi IT
ReplyDeleteThank you for this information. This is very wonderful website. it's about making life easier with stylish and functional designs that fit any decorating needs!
ReplyDeleteThanks for sharing for your valuable information.Thanks for this blog .This information is very helpful.https://www.samsung.com/ I'm always looking for new fashion trends to try out. Everyone wants better earning opportunities but at the same time wants to carry the valued Work and career mentor factor along.house of dragon I am expecting more such kind of posting from the writer So Nice.
ReplyDeleteThis is very useful website. I like this website . Good information
ReplyDeletemobiledokan
In the realm of earthquake engineering, managing and controlling structural responses is crucial. Your discussion of active and passive control systems in earthquake scenarios draws parallels with project management, where control and optimization are equally important. Just as engineers strive to minimize structural volume while ensuring stability, project managers aim to optimize resources and timelines. Tools like Celoxis Best PPM, in the world of project portfolio management, offer a comprehensive approach. They help in controlling and optimizing various project elements, much like your active and passive systems in earthquake engineering work together to maintain structural integrity. Balancing control and efficiency is vital in both fields, making these insights relevant across domains.
ReplyDeleteYou have shared very informative article with us. Thanks for sharing this article with us. Now it's time to avail Property Management Virtual Assistant for more information.
ReplyDeleteThis comment has been removed by the author.
ReplyDeleteExciting to see the progress! Your detailed updates really give a great insight into the construction developments. Can't wait to see the final result. I have found this interesting blog post! Do check it out masako katsura.
ReplyDeleteI couldn't help but express my excitement after reading the latest construction updates. It's truly remarkable to see the progress and transformation taking place. web development company in Pakistan Kudos to the entire construction team for their hard work and dedication!
ReplyDeleteThe attention to detail is evident in every phase of the project. From the initial groundwork to the latest structural developments, it's clear that precision and quality are top priorities. dry cleaners The commitment to delivering excellence is truly commendable.
ReplyDeleteThe external damping and the stiffness contribution of the passive structural control bd laptop price
ReplyDeleteAl Assisted Writing PlatformInternet
ReplyDeleteThe optimal configuration and dimension design of VE dampers in a building is also studied. Computer price usa
ReplyDeleteدهانات خارجية
ReplyDeleteدهانات
thanks for the information
ReplyDeleteThe optimal design of the conventional dark web links structure with an assumed value of inherent structural damping level of 1 to 5% of critical is taken for all the modes in each of three cases and are are fixed through the optimization. A time history approach is used for the analysis required for the optimization procedure. The 18 May 1940 El-Centro is used as earthquake excitation. The minimum volume of the optimal structure is decreased as inherent structural damping is increased.
ReplyDeleteI came across your insightful blog post and couldn't help but appreciate the valuable information you've shared on the topic. Your expertise truly shines through, and it's evident that you've put a lot of effort into creating such a comprehensive piece.If I may add, for those seeking additional support in tackling finance assignments, exploring professional assistance could be beneficial. Services like "finance assignment help" provide tailored guidance, ensuring a deeper understanding of the subject matter.
ReplyDeleteThat was an amazing article with full of information's and also explained the company Fabcon Engineering Profile.
ReplyDeleteInfrastructure Innovations": Highlight innovative technologies and techniques used in construction updates, such as 3D printing.SEO Nahidul
ReplyDeleteบริการ สล็อต slot ด้วยระบบเกมใหม่ปัจจุบันของพวกเรา ได้ปรับปรุงแก้ไขให้มีความเสถียรภาพมากยิ่งขึ้น PG SLOT เล่นสล็อตผ่านมือถือ ก็ไม่มีหลุด เล่นได้ทุกระบบปฏิบัติการ จะเล่นโทรศัพท์มือถือเครื่องไหน คอมจำพวกใด
ReplyDeletethanks for the information HEALTH AND FITNESS
ReplyDeleteOutsourced Bookkeeping: Free yourself from bookkeeping hassles! Outsource to Outbooks' experienced team for efficient & cost-effective services.
ReplyDeleteI am amazed by the quality of this blog. The depth of analysis and the clarity of your explanations make it a joy to read. Thank you for sharing such valuable insights!
ReplyDeleteflash photography discount code
This is an exceptional blog post! Your thorough research and clear, concise writing make it both informative and enjoyable to read. Thank you for sharing your expertise.
ReplyDeleteasap promo code
Active and passive control systems play a crucial role in enhancing the earthquake resilience of structures. The choice of system depends on various factors, including the specific requirements of the structure, budget constraints, and the level of seismic risk. Hybrid systems offer a promising approach by combining the strengths of both active and passive technologies.
ReplyDeleteActive and passive control systems play a crucialdigital marketing
ReplyDelete