대한기계학회논문집A (Transactions of the Korean Society of Mechanical Engineers A)

  • 제26권12호
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  • Pages.2492-2502
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  • 2002
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  • 1226-4873(pISSN)
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  • 2288-5226(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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압력포텐샬을 이용한 초탄성 유한요소 정식화

Hyperelastic Finite Element Formulation using Pressure Potential

  • 김헌영 (강원대학교 기계메카트로닉스공학부) ;
  • 김호 (강원대학교 기계메카트로닉스공학부) ;
  • 김중재 (한라대학교 기계공학부)
  • 발행 : 2002.12.01
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초록

A rubber-like material model is generally characterized by hyperelasticity and formulated by a total stress-total strain relationship because the material shows nonlinear elastic behaviour under large deformation. In this study, a pressure potential obtained by a separately interpolated pressure is introduced to the non-linear finite element formulation incorporating with incompressible or almost incompressible condition of the material. The present formulation is somewhat different from the general formulation using the pressure computed in the displacement field. A non-linear finite element analysis program is developed for the plane strain and the axisymmetric contact problems of a rubber-like material. Various examples with rubber material are analyzed for its verification. The results about deformed shapes and stress distributions thought to be meaningful in comparison with a commercial program, MARC.

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참고문헌

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