Multimaterial Eulerian and Coupled Lagrangian-Eulerian Finite Element Analysis of Underwater Shock Problems.
Abstract
The application of coupled Lagrangian-Eulerian and multimatenal Eulerian finite element analysis to problems of interest in underwater shock research was investigated. Analyses were conducted for the classical problems of a spherical shell and an infinite cylinder loaded by a plane acoustic step wave, and for the expansion and collapse of explosion generated gas bubbles in deep water. Results for the elastic response of a spirical shell and an infinite cylinder were found to be in excellent agreement with the analytical solution results, and results for the expansion and collapse of a deep explosion generated gas bubble in the absence of nearby boundary surfaces were found to agree well with experimental results. Several analyses were conducted with explosive charges detonated at various distances from a rigid wall; results from these analyses were in qualitative agreement with what is known about this case, and serve to characterize the behavior of the resulting bubble in terms of the distance to the wall. (AN)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1995
- Accession Number
- ADA298206
Entities
People
- J. E. Chisum
- Y. S. Shin
Organizations
- Naval Postgraduate School