摘要
首先介绍了拉索-TMD系统的参数及有限元软件Ansys模拟所用的单元,再通过Matlab模拟脉动风功率谱和风速时程得到相关数据转化成风荷载,导入Ansys中进行模拟计算。通过有限元模拟探讨在一定范围内改变TMD的质量参数、刚度参数、阻尼比,得到拉索在数值模拟的风荷载作用下的减振效果。最终可针对拉索的一阶模态振动,进行TMD参数的最优配置以达到抑制拉索振动的效果。由此可对实际工程中TMD的配置具有一定的参考作用。
This paper first introduces the parameters of the-TMD system and the element used in the simulation of the finite element software Ansys.Then by simulating the fluctuating wind power spectrum and wind speed time series, the relevant data are transformed into wind load by Matlab,Which is imported into Ansys to simulate calculation. Through finite element simulation, within a certain range to change the mass parameters, the stiffness parameters and the damping ratio of the TMD, the vibration reduction effect of the cable is obtained under the numerical simulated wind load. Finally, the optimal configuration of TMD parameters can be used to suppress the first order modal cable vibration. Therefore, it can be used as a reference for the configuration of TMD in practical engineering.
作者
梁栋
王泽鑫
Liang Dong;Wang ZeXin(School of Civil Engineering and Transportation,Hebei University of Technology,Tianjin 300401,China;Hebei Civil Engineering Technology Research Center,Tianjin 300401,China)
出处
《科技通报》
2019年第2期187-194,共8页
Bulletin of Science and Technology
基金
国家自然科学基金(50808063)
