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Numerical Solutions for Thick-Welled Laminated Composite Spheres under Impact Pressure

충격내압을 받는 복합적층 중공구의 수치해

  • 오근 (금오공과대학교 대학원) ;
  • 심우진 (금오공과대학교 기계공학부)
  • Published : 2005.02.01

Abstract

In this paper, the thick-walled laminated, orthotropic as well as bimaterial, composite hollow spheres under impact pressure are analyzed in detail by using the semi-discrete finite element method with the Houbolt time-integration scheme which results in unconditionally stable transient numerical results. Numerical results are obtained by using the self-constructed spherically symmetric (one-dimensional) and axially symmetric (two-dimensional) finite element programs, and compared with the previous solutions by other researchers, being shown some of which are incorrect. The finite element package Nastran is also adopted for numerical comparison.

Keywords

Anisotropic;Elastodynamic;Finite Element;Laminated Sphere;Spherical Wave

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