排序方式： 共有3条查询结果，搜索用时 15 毫秒
1
1.
An appropriate coupled cohesive law for predicting the mixed mode failure is established by combining normal separation and tangential separation of surfaces in the cohesive zone model(CZM) and the cohesive element method.The Xu-Needleman exponential cohesive law with the fully shear failure mechanism is one of the most popular models.Based on the proposed consistently coupled rule/principle,the Xu-Needleman law with the fully shear failure mechanism is proved to be a non-consistently coupled cohesive la... 相似文献
2.
在粘聚元或者粘聚域模型中,能够预测混合失效模式（mixed mode）的粘聚律是通过关联界面的法向分离和切向分离来建立的．考虑完全剪切失效机制的Xu-Needleman粘聚律是目前文献中应用最多的关联粘聚律之一．基于该文提出的粘聚律一致关联准则,采用界面分离功分析法,证明了考虑剪切失效机制的Xu-Needleman粘聚律在混合失效模式下,属于非一致关联粘聚律．理论分析证明,考虑剪切失效的Xu-Needleman粘聚律仅在界面的法向分离功与切向分离功相等的情况下能够正确刻画混合失效模式．基于粘聚律一致关联准则,在考虑剪切失效的Xu-Needleman粘聚律的基础上,进行修正提出一种一致关联粘聚律（CCC）．分析证明,这种修正的一致关联粘聚律克服了原有Xu-Needleman粘聚律非一致关联的弊端,能够更好刻画混合失效模式下的破坏行为． 相似文献
3.
An appropriate coupled cohesive law for predicting the mixed mode failure is established by combining normal separation and
tangential separation of surfaces in the cohesive zone model (CZM) and the cohesive element method. The Xu-Needleman exponential
cohesive law with the fully shear failure mechanism is one of the most popular models. Based on the proposed consistently
coupled rule/principle, the Xu-Needleman law with the fully shear failure mechanism is proved to be a non-consistently coupled
cohesive law by analyzing the surface separation work. It is shown that the Xu-Needleman law is only valid in the mixed mode
fracture when the normal separation work equals the tangential separation work. Based on the consistently coupled principle
and the modification of the Xu-Needleman law, a consistently coupled cohesive (CCC) law is given. It is shown that the proposed
CCC law has already overcome the non-consistency defect of the Xu-Needleman law with great promise in mixed mode analyses. 相似文献
1