Research on Numerical Simulation of Other Explicit Integration Method Behavior

• 1、School of Architecture Engineering Northeast Dianli University

Abstract：By numerical simulation for dynamic response of multi degree of freedom system under excitation of initial condition, and comparative analysis of simulation results of different simulation method acceleration sequence, the behavior of PJ method, BW method and LL method are studied, such as convergence, stability, accuracy and other relevant problems. The main research results are: integral step △t=0.1Tzmin can be used as sufficient condition to guarantee numerical stability and absolute engineering precision of BW method; in the case of this condition is satisfied, BW method has significant comprehensive advantages, better than PJ and LL method, especially the advantages of relative calculation accuracy can reach magnitude level, while LL method and PJ method are almost equally matched. Considering the generally acknowledged significant advantages of calculation efficiency of explicit method, so research results support explicit method, especially the BW method, and this analysis method should gradually play a dominant role in large finite element dynamic analysis software.

Keywords： computational solid mechanics initial condition dynamic response of system numerical simulation method comparative analysis of behavior