不同阻尼特性材料组合结构的弹塑性动力时程响应计算

Elasto-plastic dynamic analysis of composite structures made up of materials of different damping properties

本文提出一种不必形成与存储总阻尼矩阵的非线性结构动力时程分析的算法，用于计算非比例、非经典阻尼结构弹塑性动力响应。该算法的软件实现简单，对现有比例阻尼结构分析程序稍加修改即可。基于此算法的计算机程序满足了由两种阻尼特性材料建造的建筑结构非线性动力时程分析的需要。

A step by step direct integration algorithm is presented for nonlinear structural systems with non--classically damping. The algorithm is efficient, especially for the systems with local damping variation, for example, the passive vibration control systems, such as a large structure with a few dampers. In addition, it is easy to add this algorithm to existing programs. By comparing the response results of some examples in the paper with other inefficient algorithms, the accuracy of this algorithm is demonstrated.