This paper describes results obtained by applying the multimaterial Eulerian and coupled Lagrangian-Eulerian finite element program MSC/DYTRAN (1994) to several problems of interest in underwater shock research. Two classical problems for which analytical solution data is available were evaluated using coupled Lagrangian and Eulerian materials. The elastic response of an infinite cylindrical shell and a spherical shell to loading from a plane acoustic step wave was examined in these problems. In addition, several analyses were conducted using a multimaterial Eulerian formulation. The behavior of underwater explosion generated gas bubbles in the absence and presence of a nearby rigid boundary was examined in these analyses. Results obtained from both coupled Lagrangian-Eulerian and multimaterial Eulerian analyses were very good; this approach appears to hold considerable promise for future underwater shock research.
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