Evaluation of the Non-Linear Fracture Parameters J and C* with ANSYS

Currently ANSYS has the capability of evaluating the linear elastic fracture parameter K by using quarterpoint crack-tip elements. This capability has been extended to the evaluation of the non-linear fracture parameters J (for modeling plasticity) and C* (for modeling creep crack growth) by the development of a post-processor, and a modified crack-tip element. The theoretical background to the post-processor and the element is described, together with some two-dimensional verification examples of a fracture test specimen.

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