中文摘要：

针对动力荷载作用下单层球面网壳结构考虑损伤累积效应的动力稳定问题，应用有限元方法进行了研究．建立了钢材考虑损伤累积的本构关系模型，并通过对动力时程计算时不同子步弹性模量和屈服强度的不断修正，获得了考虑损伤累积的单层球面网壳的动力响应，进而对结构进行了动力稳定分析．结果表明，考虑了损伤累积效应的单层球面网壳的动力响应增大，动力失稳的临界地震波峰值降低．

英文摘要：

Aiming at the problem of dynamic instability of single layer spherical latticed shells considering damage accumulation under dynamic loads, a study was carried on using the method of finite element. The σ-ε model of steel considering the damage accumulation effect was constructed and the time history dynamic response considering damage accumulation effect was obtained by modifying the element stiffness in every calculation sub-step. Then the dynamic stability analysis was completed. It was shown that the dynamic response increased considering the damage accumulation effect under strong seismic excitation and the instability critical acceleration peak value of seismic excitation decreased.