Dynamic Stress Intensity Factor Computation by Using Xfem Formulation

What is it about?

this work seeks to model the behavior of structures containing stationary cracks and subjected to different types of dynamic loads (Heaviside step loading, blast rectangular and triangular loadings). The DSIF will be evaluated using two approaches; the first is local, based on the displacement jump at the crack edges near the crack tip and the other is global, based on the J integral. Also, in this work, we will test the effect of material damping and the crack orientation. The obtained results will be compared with other works in literature using other technics.

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Why is it important?

This study presents a computational procedure to evaluate the DSIF for stationary cracks using XFEM. The correlation of the obtained results with the literature for several treated configurations demonstrates the effectiveness of this procedure. This approach can be extended to problems of dynamic crack propagation.