Chapter 16: Evaluation of Mixed-Mode Stress Intensity Factors and T-stress for 3D Surface Flaws

This example problem shows how to evaluate mixed-mode stress-intensity factors, J-integrals, and T-stresses for cracks in structural components. Analyses of a simple semicircular surface flaw in a rectangular block and a warped flaw along a tubular joint are discussed.

The following features and capabilities are highlighted:

Evaluating mode-I stress-intensity factors and T-stresses for a semicircular surface flaw in a rectangular block.
Evaluating mixed-mode stress-intensity factors and T-stresses for a warped semi-elliptical surface flaw in a tubular joint.
Meshing around a crack front in 3D structures.

The following topics are available:

16.1. Introduction
16.2. Problem Description
16.3. Modeling
16.4. Material Properties
16.5. Boundary Conditions and Loading
16.6. Analysis and Solution Controls
16.7. Results and Discussion
16.8. Recommendations
16.9. References
16.10. Input Files

You can also perform this example analysis entirely in the Ansys Mechanical Application. For more information, see Evaluation of Mixed-Mode Stress Intensity Factors and T-stress for 3-D Surface Flaws in the Mechanical Technology Showcase: Example Problems.