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本文将传递矩阵法的应用范围由结构的固有振动分析推广到频域内的地震反应分析。文中具体给出了弯剪粱结构的单元传递矩阵的频域形式。用这种频域内的传递矩阵,结合离散傅里叶变换,即可求得多自由度弯剪梁体系的地震反应。同样地,可用这种方法计算各种串联多自由度体系在其它动力荷载下的反应。该方法精度良好且比相应的有限元法节省计算机CPU时间。
In this paper, the application of the transfer matrix method is extended from the natural vibration analysis of the structure to the seismic response analysis in the frequency domain. The frequency domain form of the cell transfer matrix of the flexural-to-crucible structure is given in this paper. Using this transfer matrix in the frequency domain, combined with the discrete Fourier transform, the seismic response of the bending beam system with many degrees of freedom can be obtained. Similarly, this method can be used to calculate the response of various cascaded multi-degrees of freedom systems under other dynamic loads. This method is accurate and saves computer CPU time compared to the corresponding finite element method.