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

The Korean Society of Mechanical Engineers (대한기계학회)
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J-integral of Penny-Shaped Crack on the End of Stiff Fiber Embedded in Rubbery Materials

고무와 섬유로 구성된 복합체 내의 섬유 끝 부분의 원형 균열에 대한 J-적분

  • Yang, Gyeong-Jin (Dept.of Mechanical Engineering, Graduate School of Chonnam National Universityisy) ;
  • Gang, Gi-Ju (Dept.of Mechanical Engineering, Chonnam National Universityisy)
  • 양경진 (전남대학교 대학원 기계공학과) ;
  • 강기주 (전남대학교 기계공학과)
  • Published : 2002.04.01
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Abstract

An equation of J-integral for a penny-shaped crack at the end of the fiber embedded in rubber matrix is proposed. The values of J-integral for the specimens with various crack and specimen radius are obtained by FEA(Finite Element Analysis). The dimensional analysis is applied to derive an equation of J-integral as a nonlinear elastic energy release rate. The geometry and deformation calibration function in an equation of J can be expressed in a separated form. The geometry calibration function characterizing the effects of cord and specimen size is expressed in a polynomial form of fourth order. The deformation calibration function characterizes the effect of the overall level of strain. As approaching the infinitesimal strain, the value of the deformation calibration function approaches the results of LEFM(Linear Elastic Fracture Mechanics).

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References

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