在这个增量形式的虚功方程中，考虑了积累误差的影响。
The effect of truncation errors is considered in the incremental virtual work equation.
本文从适用于几何非线性分析的增量形式的虚功方程出发，建立了有限元计算公式。
A incremental virtual work equation, which is suitable for geometric nonlinear analysis of structures, is derived in this paper.
详细分析了动力显式算法中虚功方程的空间域有限元离散方法和有限元方程的时间域中心差分离散方法。
The spatial field FE discrete method of the virtual work equation and the time field central difference discrete method of the FE equation in the dynamic explicit method are described in detail.
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