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《固体力学学报(英文版)》 1994-01
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DYNAMIC ANALYSIS OF LARGE DEFORMATION OF RIGID-VISCOPLASTIC HARDENING SPHERICAL SHELLS IMPACTED BY A MISSILE

Ning Jianguo(Peking University,Beijing 100871)Yang Guitong(Taiyuan University of Technology,Taiyuan 030024)  
This paper studies the dynamic behavior of large deformation of spherical shells impacted by a flat-nosed missile.By using isometric transformations,the deformation modes are given.On the basis of Perzyna-Symonds viscoplastic constitutive equations,the motion equations of the shells are obtained by rigid- viscoplastic variational principle.A comparison made between the numerical results and experimental ones indicates that the two groups of results are in conformity with each other.
【Fund】: This subject was SHpported by the Natural Science Foundation of Shanxi
【CateGory Index】: TH113
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