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本文介绍了弹塑性有限元塑性阶段的处理方法和增量变刚度法;论述了提高增量变刚度法精度和计算速度的途径;导出了关于过渡区元素等效应变增量的计算公式;最后总结了增量变刚度法的主要计算步骤,并绘制了程序框图。
In this paper, the treatment method of elastic-plastic finite element plasticity stage and incremental variable stiffness method are introduced. The ways of increasing the accuracy and calculating speed of incremental variable stiffness method are discussed. The formulas for calculating the equivalent strain increment of transitional element are deduced. Finally The main calculation steps of incremental variable stiffness method are summarized and the block diagram is drawn.