采用无单元法计算含边沿裂纹功能梯度材料板的应力强度因子

详细信息

EVALUATING SIF OF FUNCTIONALLY GRADED PLATE WITH AN EDGE CRACK BY ELEMENT-FREE METHOD

摘要: 本文采用无单元法分析了功能梯度材料的断裂力学问题。无单元法采用基于滑动最小二乘近似的位移插值形式,节点布置变得非常自由。这种插值形式不仅很好地反映了材料变形,而且使得无单元法在分析功能梯度材料时可以方便地采用各个积分点处的材料特性。数值计算结果表明无单元法在分析功能梯度材料力学行为方面具有较高的效率和精度。
- 无单元法(EFM) /
- 滑动最小二乘法 /
- 功能梯度材料(FGM) /
- 应力强度因子(SIF)
Abstract: The fracture problem of the functionally graded material (FGM) is analyzed using the element-free method (EFM). Basing on the moving least-squares approximation, the node distribution in EFM is very free. This kind of interpolation better reflects the deformation. EFM can conveniently adopt the material properties of the integration point to analyze FGM. Numerical results show that EFM has high efficiency, accuracy and flexibility when studying FGM.
- element-free method (EFM) /
- moving least-squares method /
- functionally graded material (FGM) /
- stress intensity factor (SIF)