大跨楼盖结构的MTMD减振优化设计研究

发布时间：2018-05-27 14:44

本文选题：人致振动 + MTMD减振分析　；参考：《武汉理工大学学报》2016年10期

【摘要】：以加速度响应系数R为衡量指标,通过编制Matlab搜索程序得到了MTMD的最优设计参数(频率比和阻尼比);在此基础上,分析了MTMD的数量、质量比、去谐效应和参数再调整对减振效果的影响;并通过数值算例进行了验证。结果表明:随着TMD个数的增加,MTMD的阻尼去谐效应削弱,频率去谐效应趋势却增强;当频率变动超过P、Q两临界点时,控制效果随TMD个数的增加而降低;4-TMD已获得了较好的减振效果,再增加TMD的个数,减振效果增加不明显。以4-TMD为研究对象,提出的频率参数再调整的设计方法,有效提高了4-TMD在频率去谐效应下的控制效果。
[Abstract]:The optimum design parameters (frequency ratio and damping ratio) of MTMD are obtained by programming the Matlab search program with the acceleration response coefficient R as the index, and the quantity and mass ratio of MTMD are analyzed. The effect of detuning effect and parameter readjustment on the damping effect is verified by numerical examples. The results show that with the increase of the number of TMD, the damping detuning effect weakens, but the frequency detuning effect tends to increase, and when the frequency change exceeds the critical point of TMD, the control effect decreases with the increase of the number of TMD. When the number of TMD is increased, the effect of vibration reduction is not obvious. Taking 4-TMD as the research object, the design method of frequency parameter readjustment is proposed, which can effectively improve the control effect of 4-TMD under the frequency detuning effect.
【作者单位】：武汉理工大学土木工程与建筑学院;武汉理工大学理学院;
【基金】：国家自然科学基金(51508431) 中国博士后科学基金面上项目(2015M582288)
【分类号】：TU311.3

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