A Numerical Study on the Large Compressive Deformations of Closed-Celled Rubber Foams

Abstract:

Three dimensional (3D) cubic models with spherical pores ranged as Face-Centered Cubic (FCC) lattices are constructed to simulate the microstructures of rubber foams with various relative densities. The Mooney-Rivlin strain energy potential model is adopted to characterize the hyperelasticity of the constituent solid from which the foams are made. Large compressive deformations of closed-celled rubber foams are calculated by the iterative algorithm. Numerical results show that with the decreasing of foam relative densities, the effects of air pressures in cells on foam compressive stresses increase. When the ratio of initial Yangs modulus of cell material to the initial air pressure in cells reaches 2 order of magnitude, the influence of air pressures in cells can neglect.

• Periodical: Applied Mechanics and Materials (Volumes 444-445)
• Pages: 23-26
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.444-445.23
• Online since: October 2013
• Authors: Zhi Geng Fan
• Keywords: Finite Element Method (FEM), Hyperelasticity, Micromechanical Model, Rubber Foams

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