Abstract
The paper presents a hyperelastic material model which is intended to describe slightly compressible materials with encountered the Mullins effect. It is assumed the volumetric-isochoric stored energy function split regarding the primary response of a material. Constitutive equations based on the concept of pseudo-elasticity are derived. The problems of a simple uniaxial compression/tension involving one finite element and a compression of a ball are solved using ABAQUS. The material model is defined with the help of user subroutine UHYPER in terms of the primary material response. Its main advantage is a physically correct description of volumetric changes while the polynomial model in ABAQUS does not meet basic growth conditions. In order to include the Mullins effect, it is combined with available in the software library the Mullins effect material model which is based on Ogden-Roxburgh proposition of stress softening function. Experimental data on synthetic rubber neoprene published in the literature is utilized.
Published Version
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