使用重合网格法(S-FEM)分析了混合模态下CFRP层合板分层问题.首先将虚裂纹闭合技术集成到S-FEM程序中,求解了复合材料分层尖端处的应变能释放率.然后把重合网格法数值结果与基于梁理论的计算结果及实验数据进行了比较.结果表明,对于单方向及多方向CFRP复合材料层合板,重合网格法都能够得到更精确的数值,是一种有效的计算复合材料裂纹尖端应变能释放率的方法.
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