ABSTRACT
This chapter describes the development of constitutive models for the computational analysis of the static behaviour including Mullins effect. The continuum damage mechanics model and the pseudo-elastic model are selected for implementation purposes. The chapter also describes the combination of the damage model with Gao's elastic law, which only includes two material parameters. Numerical results of Gao's model fit very well with experimental data. A combination of continuum damage mechanics model with Gao's model describes successfully the whole processes under cyclic loading conditions. From a quantitative point of view, this model is not so satisfactory to reproduce all curves precisely. But, this approach still reveals the fundamental phenomenon of Mullins effect and the results are useful to predict the behaviour of rubber-like material. Under cyclic loading conditions, the load required to produce a given stretch during the second loading cycle is smaller than the load required to produce the same stretch during the primary loading cycle.
