A study of transient responses of a submerged spherical shell under shock waves |
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| Authors: | Cho-Chung Liang Ching-Yu Hsu Wen-Hao Lai |
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| Institution: | a Department of Naval Architecture and Marine Engineering, Chung Cheng Institute of Technology, Ta-Shi, Tao-Yuan 335, Taiwan, ROC;b Naval Shipbuilding and Development Center, P.O. Box No. 90151–2, Tsuo-Ying, Kaohsiung 813, Taiwan, ROC;c Material Resource Department, Ministry of National Defense, P.O. Box No. 90004, Taipei 100, Taiwan, ROC |
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| Abstract: | Based on a procedure which couples the finite element method with the doubly asymptotic approximation, this work addresses the problem of the transient responses of a submerged spherical shell subjected to strong, plane, incident shock waves, in which elastoplastic material behavior is considered. Simulation results indicate that the procedure adopted shows good agreement with related literature, which considered linear elastic behavior of the shell. Also presented herein are the time histories of surface pressure, radial velocity and von Mises stress of the shell. Moreover, deformation diagrams and spreading of the plastic zone of the shell are described as well. |
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| Keywords: | Fluid– structure interaction Submerged spherical shell Elastoplastic behavior Underwater shock |
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