摘要
分析了简谐激励和平稳随机激励条件下,复阻尼调频质量阻尼器(TMD)和主结构的二自由度减震结构体系的稳态地震响应,建立了动力学平衡方程,推导了复阻尼TMD的阻尼和频率最优参数的理论公式,并分析了该二自由度减震结构体系在多条地震波作用下的减震效果,对比了复阻尼TMD和粘滞阻尼TMD减震效果的差异,结果表明:复阻尼TMD的减震效果接近于粘滞阻尼TMD的结果,在应用TMD减震技术时,复阻尼TMD也是一种选择。
The steady state responses of the two degree of freedom damping structure system including the TMD with complex damping and the main structure subjected to harmonic excitation and stationary random excitation are analyzed. The dynamic equations are established. The analytic solution for the optimum damping and frequency is obtained. The damping effect of the two degree of freedom damping structure system subjected to multiple seismic waves is analyzed. The difference of the damping effect between TMD with complex damping and TMD with viscous damping is compared. The influencing factor and the law of TMD’s damping effect are studied under different seismic wave excitations. The results showed that the vibration reduction effect of the system with complex damping is very close to the effect of the system with viscous damping. When the TMD is applied in vibration control,complex damping is an advisable option.
出处
《山西建筑》
2017年第5期42-45,共4页
Shanxi Architecture
关键词
复阻尼
TMD
简谐激励
白噪声激励
地震波激励
complex damping
TMD
harmonic excitation
white noise excitation
seismic wave excitation
