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You can use the new decohesion functionality for simulating either delamination between two layers, or for describing crack growth in a continuous material. In the latter case, the crack path must be known prior to conducting the analysis. The formulation, called a cohesive zone model (CZM), is based on a material model where the following applies:
Comsol Multiphysics 5.2 Crack 27
During the test, the initial crack will start growing when the load exceeds a critical value. As the crack begins to grow, the structure will become more flexible so that the force is reduced. This is illustrated in the graph below.
Thanks for this very interesting article. I am considering implementing the decohesion feature to model tensile fracture (mode I). I have limited experience with the solid mechanics module in Comsol. However, I am considering using Comsol, since I am planning to implement multiphysics in the future. 2ff7e9595c
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