磁流变阻尼器受控平面L形框架结构的多维减震

为分析加入磁流变阻尼器(MRD)框架结构的多维减震性能和扭转震动特性,采用MATLAB软件开发了未控和MRD受控平面L型框架结构的空间计算模型程序,在三向地震荷载作用下分别对未控和MRD受控模型进行了动力时程分析,对结构典型节点X、Y、Z向的位移时程响应、加速度时程响应、结构的各层位移、加速度、层间位移角以及空间扭转震动响应进行对比。结果表明：用MATLAB开发的未控和MRD受控平面L型框架结构的空间计算模型程序能有效计算结构的多维地震响应；MRD可以有效减小平面L型框架结构的多维位移和加速度时程响应；MRD可以有效减小平面L型框架结构的各层最大位移、加速度和层间位移角；合理地布置MRD能够稳定地发挥耗能作用,并能有效减小平面L型框架结构的扭转震动响应。

Multidimensional shock absorption study of plane L-shaped frame structure with Magnetorheological Damper

In order to analyze the multi-dimensional earthquake mitigation performance and the torsional vibration characteristics of a frame structure with Magnetorheological Damper (MRD), the spatial calculation model programs of the plane L-shaped frame structure with and without MRD were developed by MATLAB software, the dynamic time-history analysis was carried out under the earthquake load, the displacement, acceleration response of typical nodes in X, Y, Z directions, displacement, acceleration, the inter-layer displacement angle of the structure and the spatial torsional vibration response of structure were compared. The results show that the spatial calculation model programs of the plane L-shaped frame structure with and without MRD developed in MATLAB can effectively simulate the multi-dimensional earthquake response of the structure. MRD can effectively reduce the multidimensional displacement and acceleration time-history response of the plane L-shaped frame structure. MRD can effectively reduce the maximum displacement, acceleration and the inter-layer displacement angle of the plane L-shaped frame structure. Reasonable arrangement of MRD can stably consume energy and effectively reduce the torsional vibration response of plane L-shaped frame structure.