We talked about 2D stationary crack analysis using KSCON in the last post. This time let's have a look at the 3D model using solid elements. A long plate with a centre crack is subjected to an end tensile stress. The sketch of the problem is as follows. A one-quarter model is used because of symmetry. … Continue reading 3D Stationary Crack Analysis: J-integral and Stress Intensity Factor Calculation
J-integral
2D Stationary Crack Analysis: J-integral and Stress Intensity Factor Calculation
We talked about calculating J-integral and K1 using XFEM in the last post. XFEM is a powerful method as it eliminates the need to remesh crack-tip regions. However, there are some limitations. For example, material behaviour is assumed to be linearly elastic. The available fracture criteria are valid only for cracks in homogeneous linear elastic … Continue reading 2D Stationary Crack Analysis: J-integral and Stress Intensity Factor Calculation
XFEM-Based Stationary Crack Analysis
This post presents an example of stationary crack analysis based on the extended FEM (XFEM). A common way to model the stress concentration at a crack tip is using KSCON command which specifies a keypoint about which an area mesh will be skewed. For stationary crack analysis, reasonable accuracy can be achieved using KSCON, although … Continue reading XFEM-Based Stationary Crack Analysis
Xutao Sun 