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DRAIN-2D平面结构弹塑性动力分析通用程序,是目前国外比较流行的大型程序之一。该程序由美国加利福利亚大学伯克力分校威尔逊教授在1982年10月赠予我国访美学者。程序包含桁架单元、梁单元、梁-柱单元、填充墙(板)单元、半刚性节点单元,以及退化刚度梁单元等,从而能解决多种结构在直接输入地震波下的弹性及弹塑性地震反应分析。
The DRAIN-2D plane structure elastoplastic dynamic analysis general program is one of the most popular large-scale programs abroad. The program was presented to Chinese scholars in October 1982 by Professor Wilson of the University of California, Berkeley. The program includes truss elements, beam elements, beam-column elements, infilled wall (plate) elements, semi-rigid node elements, and degeneracy stiffness beam elements, to solve the elastic and elasto-plastic seismic responses of various structures under direct input seismic waves. analysis.