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Structural Engineering and Mechanics
  Volume 2, Number 2, June 1994, pages 173-184

An efficient finite element modeling of dynamic crack propagation using a moving node element
Y.W. Kwon and C. Christy

    The objective of this study was to develop a simple and efficient numerical modeling technique for dynamic crack propagation using the finite element method. The study focused on the analysis of a rapidly propagation crack in an elastic body. As already known, discrete crack tip advance with the stationary node procedure results in spurious oscillation in the calculated energy terms. To reduce the spurious oscillation, a simple and efficient moving node procedure is proposed. The procedure does require neither remeshing the discretization nor distorting the original mesh. Two different central difference schemes are also evaluated and compared for dynamic crack propagation problem.
Key Words
     finite element method; crack propagation; dynamic fracture.
Mechanical Engineering Department, Naval Postgraduate School, Monterey, CA93943, U.S.A.

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