Abstract:

In this paper, a modified “Moving Singular Element Method” is presented by using a new variational equation in place of “energy-consistent variational statement”, which is more rigorous in theoretic concept and more convenient to perform. Furthermore, on the basis of it, a so-called “Quasi-static Moving Singular Element Method” is shown, which takes about 50% less CPU time when actually computing and has a reasonable accuracy.

Key words: singular element, dynamic crack propagation, dynamic crack propagating toughness