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概述了弹塑性有限元分析的一种新算法——初应力变模量法。给出了模块化程序与SAP5程序的联接方案,并利用西德Siemens-7570.C大型计算机现有绘图软件,完成结构弹性、弹塑性变形图的缩放旋转,局部修正、汉字信息显示以及平面应力、应变彩色剖面分布线的绘制。与现有大型程序中弹、塑性有限元增量算法比较,在SPA5程序中引入新算法可显著提高计算效率和收敛速度。
A new algorithm of elastic-plastic finite element analysis is introduced, which is called initial modulus change modulus method. A joint program of modular program and SAP5 program is given, and the existing drawing software of West Germany’s Siemens-7570.C large-scale computer is used to complete the zooming rotation, local correction, Chinese character information display, and plane stress of structural elasticity, elasto-plastic deformation maps. , Strained color profile distribution line drawing. Compared with the existing elastic and finite element incremental algorithms in large-scale programs, the introduction of new algorithms in the SPA5 program can significantly improve the computational efficiency and convergence speed.