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http://dx.doi.org/10.3795/KSME-A.2002.26.4.617

J-integral of Penny-Shaped Crack on the End of Stiff Fiber Embedded in Rubbery Materials  

Yang, Gyeong-Jin (Dept.of Mechanical Engineering, Graduate School of Chonnam National Universityisy)
Gang, Gi-Ju (Dept.of Mechanical Engineering, Chonnam National Universityisy)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.26, no.4, 2002 , pp. 617-624 More about this Journal
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).
Keywords
Energy Realease Rate; Rubber-Fiber Composites; Dimensional Analysis; Separation Parameter;
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