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裂纹尖端没有独立的自由度是富集有限元法，比如广义有限元、扩展有限元和增强有限元等，模拟强非连续变形问题时，产生响应曲线的锯齿状阶跃和尾段上翘现象的重要原因。
非连续变形问题增强有限单元法的一点改进
【摘 要】
：
裂纹尖端没有独立的自由度是富集有限元法，比如广义有限元、扩展有限元和增强有限元等，模拟强非连续变形问题时，产生响应曲线的锯齿状阶跃和尾段上翘现象的重要原因。
【机 构】
：
浙江大学岩土工程研究所,浙江杭州310058;浙江大学软弱土与环境土工教育部重点实验室,浙江杭州310058
【出 处】
：
中国计算力学大会2018暨国际华人计算力学大会2018
【发表日期】
：
2018年8期
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