【摘要】 针对数值模拟材料损伤开裂的现有方法——空单元技术和嵌入过程区中结点力释放方法 ,提出了释放空单元内结点力的新模拟方法 ,既可解决原有空单元技术未曾明确的残余应力的释放问题 ,又可避免采用嵌入过程区方法时所引入的大量重叠结点。己有算例表明 ,本方法具有模型简明 ,操作便利的特点更多还原

【Abstract】 Concerning the existing methods (empty element technique and embedded process zone method used for releasing nodal forces) applied to the numerical simulation of damage and cracking in materials, a new method of modeling is proposed for releasing the internal nodal forces of the empty elements. It provides a way to release the residual stresses which are not specified by the previous empty element technique, but without resort to using redundant overlap nodes as that in the embedded process zone method. Previous computation examples have demonstrated that this method has the advantages of simple modeling and convenient implementation.更多还原