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

The Korean Society of Mechanical Engineers (대한기계학회)
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Effect of Interface on the Properties of Cord-Rubber Composites

코드섬유-고무 복합재료의 물성치에 대한 계면의 영향

  • Lim, Hyun-Woo (School of Mechanical and Automotive Engineering, Univ. of Ulsan) ;
  • Kim, Jong-Kuk (School of Mechanical and Automotive Engineering, Univ. of Ulsan) ;
  • Yum, Young-Jin (School of Mechanical and Automotive Engineering, Univ. of Ulsan)
  • 임현우 (울산대학교 기계자동차공학부) ;
  • 김종국 (울산대학교 기계자동차공학부) ;
  • 염영진 (울산대학교 기계자동차공학부)
  • Received : 2009.12.07
  • Accepted : 2010.03.22
  • Published : 2010.05.01
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Abstract

The nonlinearity and high deformability of rubber make accurate analysis of the behavior of cord-rubber composites a challenging task. Some researchers have adopted the third phase between cord and rubber and have carried out three-phase modeling. However, it is difficult to determine the thickness and properties of the interface in cord-rubber composites. In this study, a two-dimensional finite-element method (2D FEM) is used to investigate the effective and normalized moduli of cord-rubber composites having interfaces of various thicknesses; this model takes into account the 2D generalized plane strain and a plane strain element. The neo-Hookean model is used for the properties of rubber, several interface properties are assumed and three loading directions are selected. It is found that the properties and thickness of the interface can affect the nonlinearity and the effective modulus of cord-rubber composites.

고무의 비선형성과 대변형으로 인해 코드-고무 복합재료의 정확한 거동을 파악하기는 어렵다. 코드와 고무 사이에 제 3 의 상을 가정해서 세 가지 상에 대한 모델링을 하기도 하지만 코드-고무 복합재료 계면의 두께와 물성을 결정하기 힘들다. 본 연구에서는 2 차원 일반화된 평면변형률요소와 평면변형률요소를 사용한 유한요소법을 적용하여 여러 가지 계면 두께를 갖는 코드-고무 복합재료의 유효탄성계수와 무차원 탄성계수를 구하였다. 고무물성은 네오-후크 모델을 적용하였고 여러 가지 하중상태와 몇 가지 계면 물성치에 대한 고찰을 하였다. 그 결과 계면 물성치와 계면 두께는 코드-고무 복합재료의 비선형성과 유효탄성계수에 영향을 미침을 알수 있었다.

Keywords

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