无网格方法是近年来兴起的一种与有限元法相类似的数值方法.由于仅仅采用基于点的近似,而不需要节点的连接信息,无网格方法不仅避免了繁琐的单元网格生成,而且提供了连续性好、形式灵活的场函数,具有前后处理简单、精度高等方面的优点.在处理裂纹扩展、多尺度分析、高速碰撞和具有大变形特征的工业成形问题时具有重要的研究价值和广阔的应用前景.
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