摘要
本文从地面运动为水平简谐运动时结构引入多个TMD的运动方程出发,推导了其理论解,并在此基础上,假设各个TMD拥有相同的质量、频率和阻尼,分析了在总质量一定的前提下,TMD个数的变化对其减震效果的影响。并制作拱形主结构和TMD模型进行实验验证。实验结果也得出同样的结论:即总质量一定的前提下,如果各个TMD拥有相同的质量、频率和阻尼,则其个数的变化对其减震效果的影响不大。最后,根据实验模型编制有限元程序进行模拟计算,计算结果与实验结果比较吻合。
In this paper, based on the motion equation and its theoretic solution of structure with multiple TMD subjected to harmonic ground motion, the influence of the number of TMD on its control effect in the case of fixed total weight was analyzed and discussed. In order to examine the influence of the number of TMD, a model of a vaulted structure and three types of TMDs were provided. Through the free vibration experiments in which the model has its initial displacement, the results show the same conclusion with theoretic analysis that the number of TMD has little influence on control effect in the case of fixed total weight. Finally, an FEM program simulating the experiments had been made and its results were close approximately to the experimental data, which has verified the correctness of model experiments.
出处
《力学季刊》
CSCD
北大核心
2002年第4期534-539,共6页
Chinese Quarterly of Mechanics
基金
国家杰出青年科学基金项目(No.59925820)
