Effects of geometric and material imperfections on the dynamic response of cylindrical shells subjected to underwater explosion
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Author
Kaufman, Robert E.
Date
1995-06Advisor
Shin, Young S.
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The effects of initial geometric and material property imperfections on the non-linear dynamic response of cylindrical shells subjected to an underwater explosion was investigated. Finite element and boundary element programs were used to perform the analysis of the dynamic response of these shells. The geometric and material modal imperfections were introduced into the finite element models. The dynamic response and deformation of the cylinder were then compared for each of the eight modal imperfection cases to the dynamic response of a perfect cylindrical model. The modal imperfection distribution of the combined geometric and material imperfections are then introduced into an aluminum model and compared to experimental results obtained from underwater explosion testing. This analysis shows that a more accurate prediction of the damage and dynamic response is achieved by introducing these imperfection distributions into the numerical analysis.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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