空间网架结构弹塑性时程分析的关键技术

Key technique for time history analysis of elasticity and plasticity of spatial trusses

就弹塑性动力分析问题，针对空间网架结构陈述了其中的几个关键技术，并就恢复力模型问题首次提出了考虑杆件真实工作性态的模型多折线模型，在此基础上进一步推出结构的弹塑性刚度、团聚质量阵和阻尼阵．

Several key techniques for analysis of elastic and plastic dynamic behavior of spatial trusses are described. The restoring force model in connection with real working behavior of the trusses called as multiple broken line model is first presented. Based on this model, elastic plastic stiffness, lumped mass matrix and damping matrix of trusses are derived.