Numerical modeling of a propagating crack.
Christy, Clifford T.
Kwon, Young W.
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In the numerical modeling of the crack propagation in dynamic fracture using stationary elements. a discrete and sudden release of node at the crack tip creates spurious oscillation in the kinetic and strain energy values. In order to reduce the oscillation, a moving node element was utilized. This element can model a continuous crack tip movement more closely. The moving node element is compatible with surrounding regular isoparametric elements and no remeshing is required during the crack propagation. In addition, two different central difference schemes were compared, and their results were almost the same.
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