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Dynamical cavitation and oscillation of an anisotropic incompressible hyper-elastic sphere

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Abstract

Dynamical cavitation and oscillation of an anisotropic two-family fiber-reinforced incompressible hyper-elastic sphere subjected to a suddenly applied constant boundary dead load are examined within the framework of finite elasto-dynamics. An exact differential equation between the radius of the cavity and the applied load is obtained. The curves for the variation of the maximum radius of the cavity with the load and the phase diagrams are obtained by vibration theories and numerical computation. It is shown that there exists a critical value for the applied load. When the applied load is larger than the critical value, a spherical cavity will suddenly form at the center of the sphere. It is proved that the evolution of the cavity radius with time follows that of nonlinear periodic oscillation, and oscillation of the anisotropic sphere is not the same as that of the isotropic sphere.

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Authors and Affiliations

  1. Department of Mechanics, Shanghai Key Laboratory of Mechanics in Energy and Environment Engineering, Shanghai University, Shanghai, 200444, China

    JiuSheng Ren, HanHai Li & ChangJun Cheng

  2. College of Science, Dalian Nationalities University, Dalian, 116600, China

    XueGang Yuan

Authors
  1. JiuSheng Ren
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  2. HanHai Li
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  3. XueGang Yuan
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  4. ChangJun Cheng
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Correspondence to JiuSheng Ren.

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Ren, J., Li, H., Yuan, X. et al. Dynamical cavitation and oscillation of an anisotropic incompressible hyper-elastic sphere. Sci. China Phys. Mech. Astron. 55, 822–827 (2012). https://doi.org/10.1007/s11433-012-4701-1

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  • DOI: https://doi.org/10.1007/s11433-012-4701-1

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