Interaction and multiscale mechanics

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A Meshfree procedure for the microscopic analysis of particle-reinforced rubber compounds

  • Wu, C.T. (Livermore Software Technology Corporation) ;
  • Koishi, M. (CAE Laboratory, The Yokohama Rubber Co., Ltd.)
  • Received : 2009.03.19
  • Accepted : 2009.05.04
  • Published : 2009.06.25
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Abstract

This paper presents a meshfree procedure using a convex generalized meshfree (GMF) approximation for the large deformation analysis of particle-reinforced rubber compounds on microscopic level. The convex GMF approximation possesses the weak-Kronecker-delta property that guarantees the continuity of displacement across the material interface in the rubber compounds. The convex approximation also ensures the positive mass in the discrete system and is less sensitive to the meshfree nodal support size and integration order effects. In this study, the convex approximation is generated in the GMF method by choosing the positive and monotonic increasing basis function. In order to impose the periodic boundary condition in the unit cell method for the microscopic analysis, a singular kernel is introduced on the periodic boundary nodes in the construction of GMF approximation. The periodic boundary condition is solved by the transformation method in both explicit and implicit analyses. To simulate the interface de-bonding phenomena in the rubber compound, the cohesive interface element method is employed in corporation with meshfree method in this study. Several numerical examples are presented to demonstrate the effectiveness of the proposed numerical procedure in the large deformation analysis.

Keywords

References

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