Material law selection in the Finite Element simulation of rubber-like materials and its practical application in the industrial design process

摘要

The improving performance of modern computers enables engineers to solve nonlinear problems of increasing size. Non-linear material laws for rubber-like materials are nowadays well-established and form a natural part of the material library of commercial nonlinear Finite Element codes. But these well-established material models may cause serious problems in practical applications, if insufficient testing is done when calibrating the material constants. New constitutive laws for rubber-like materials have been developed that are specially designed to tackle this difficulty.These more phenomenological material laws are implemented in the Finite Element program ABAQUS and are particular compared with the more traditional approach of using hy-perelastic strain energy functions in view of their practical application in the industrial design process.