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3-D Finite Element Modeling of Fiber Reinforced Rubber Composites using a Rubber Element

리바요소를 이용한 섬유강화 고무기저 복합재료의 3차원 유한요소 모델링기법

  • 정세환 (한국과학기술원 기계공학과) ;
  • 송정한 (한국과학기술원 기계공학과) ;
  • 김진웅 (대원강업㈜ 대원기술연구소) ;
  • 김진영 (대원강업(주) 대원기술연구소) ;
  • 허훈 (한국과학기술원 기계공학과)
  • Published : 2006.12.01

Abstract

Finite element analyses of structures made of the fiber reinforced composites require an adequate method to characterize the high anisotropic behavior induced by one or several layers of fiber cords with different spatial orientation embedded in a rubber matrix. This paper newly proposes a continuum based rebar element considering change of the orientation of the fiber during deformation of the composite. The mechanical behavior of the embedded fiber is modeled using two-node bar elements in order to consider the relative deformation and spatial orientation of the embedded fiber. For improvement of the analysis accuracy, the load-displacement curve of fiber is applied to the stiffness matrix of fiber. A finite element program is constructed based on the total Lagrangian formulation considering both geometric and material nonlinearity. Finite element analyses of the tensile test are carried out in order to evaluate the validity of the proposed method. Analysis results obtained with the proposed method provides realistic representation of the fiber reinforced rubber composite compared to results of other two models by the Halpin-Tsai equation and a rebar element in ABAQUS/Standard.

Keywords

Rebar Element;Fiber Reinforced Composite;Finite Element Method

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