Numerical analysis of crack under compression by 3D displacement discontinuity method. (English) Zbl 1427.74158
Summary: A 3D displacement discontinuity method is applied to solve the fracture mechanics problems of the mixed mode crack under compression. Friction between the surface of the closed crack is considered by establishing a simple and efficient iterative algorithm based on method of contact resistance mitigation. On the surfaces of the closed crack, the Mohr-coulomb rule is satisfied by iteration when the crack is in condition of sliding. The stress intensity factors are obtained using displacement fitting method. It is shown that the numerical results agree with the experimental results well and that friction plays an important role in resisting crack propagation.
MSC:
| 74R10 | Brittle fracture |
| 74S99 | Numerical and other methods in solid mechanics |
| 74M10 | Friction in solid mechanics |
Keywords:
crack closure and sliding; iterative displacement discontinuity method; stress intensity factoryReferences:
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