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The Effect of Arrangement of Viscoelastic Dampers in the Performance of Steel Structures Using Incremental Dynamic Analysis

Rayegani, Arash | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46726 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Kazemi, Mohammad Taghi
  7. Abstract:
  8. Including control systems structures against lateral forces such as dynamic loads, earthquakes etc. are viscoelastic damper, that their use in recent years on the structure had positive results. Although the use of dampers improve certain behavioral characteristics, such as relative displacement, but can increase the structural acceleration and energy absorption structures. Passive damper performance depends on several factors such as temperature, time, frequency, stiffness of bracing and structures, type of loading that should any of these uncertain in the optimal design of controlled structures taken into account. Common method of achieve proper placement pattern of passive dampers, which is a function of the cycle at any stage, a magnitude of damper closer to the optimum damping. In this study a method for obtaining the optimal size of viscoelastic dampers in classes offered which in this method magnitude of dampers are arranged according to rotation between floors As a function of the ratio of plastic energy absorbed by the structure of the original structure to controlled structure be minimized. Also stiffness of braces which connected to the damper are effective in determining the optimal damping and the effect on the optimal damping is obtained and to what extent it has been shown That damping of the structure will be helpful in improving performance. Finally, control structures and core structures without control system with progressive of dynamic analysis is examined
  9. Keywords:
  10. Passive Control ; Optimization ; Incremental Dynamic Analysis ; Nonlinear Analysis ; Viscoelastic Damper

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