Transient response of a finite submerged axisymmetric shell in a shock wave /
| Main Author: | |
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| Other Authors: | , , |
| Format: | Thesis Book |
| Language: | English |
| Published: |
1990.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Abstract: | The response of a shallow submerged elastic body excited by a transient wave in an acoustic medium is studied. A linear superposition model is developed to analyze the scattering and radiation problem. The boundary element method (BEM) together with the retarded potential integral equations is applied to predict shock wave loadings, while the finite element method (FEM) is used to analyze the structural response. In conjunction with these two numerical methods, an efficient iteration procedure together with the linear superposition method is developed to predict the total loading and structural response. Numerical results were obtained for a spherical shell impinged by a plane shock wave in both infinite and semi-infinite fluid domains. The shock wave was propagating normally toward the free surface. The free surface unloading effects and structural response at five different depths of submergence were investigated. Comparison with exact solutions for an infinite fluid obtained from the classical method of separation of variables indicates that the present numerical procedure is sufficiently accurate. For other axisymmetric body shapes and shock wave incident angles, the same analysis procedures can be applied and the computer programs developed can be adapted by merely modifying the geometrical definition of the body. |
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| Item Description: | Typescript (photocopy). Vita. "Major subject: Ocean engineering." |
| Physical Description: | xv, 148 leaves : illustrations ; 29 cm |
| Bibliography: | Includes bibliographical references. |