Dynamic response analysis method for nonlinear multi-degree-of-freedom system

摘要

The present invention provides a dynamic response analysis method of a nonlinear multi-degree-of-freedom system with relatively high analysis accuracy while having relatively low calculation cost. By ignoring interactions between modes in the plastic domain and assuming mode superposition rules for mode superposition, modal expansion of the nonlinear multi-degree-of-freedom system by the natural oscillation mode of the elastic domain, and the non-linear single-degree-of-freedom system The maximum deformation of each mode is grasped by using the mode plasticity obtained from the constant plasticity response spectrum created by the time history response analysis of the above.