Relative displacement frequency response and parameter optimization for suspended building structure
On the basis of the principle of suspended tuned mass damper (STMD), the calculation model of suspended building structure is put forward. According to the random vibration theory and the dynamic model of suspended building structure, the relative displacement frequency response functions of main structure and accessory structure under simple harmonic excitation is derived. And taking the relative displacement frequency response of main structure as the objective function, parameter optimization analysis is carried out. Furthermore on the condition of the optimal structural tuning ratio and optimal damping ratio of accessory structure, the influences of variations of suspended mass ratio and exciting frequency ratio on the relative displacement frequency response are analyzed. The analysis results demonstrate: suspended building structure is more sensitive to low-frequency excitation than to highfrequency excitation; under the low-frequency excitation, the relative displacement frequency response of accessory structure increases with increment of mass ratio; and under the excitation, of which the exciting frequency ratio is relatively not so small, the displacement response of accessory structure decrease sharply with the increment of suspended mass ratio.
relative displacement frequency response parameter optimization suspended building structure
Yong-Ming TU Hua ZANG
Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast Un School of Civil Engineering, Nanjing Institute of Technology, Nanjing 211167, P.R. China
国际会议
The Third International Conference on Modelling and Simulation(第三届国际建模、计算、仿真、优化及其应用学术会议 ICMS 2010)
无锡
英文
284-289
2010-06-04（万方平台首次上网日期，不代表论文的发表时间）