Finite element comparison between Neo-Hookean model and Ogden model for steel-rubber base isolator

Neo-Hookean model is hyper-elastic material models where the strain energy density function is made from deformation tensor. Even though Ogden model is a hyper-elastic material model, its strain energy density function is expressed by principal stretch ratio. These three models have been widely used in industries. Recently, Ogden model, especially Ogden 3rd model, shows better agreement with the test data than others. In spite of the limitations to describe particular stress states, it is known that reasonable results using these models can be obtained for various structural components. In this research, both Neo-Hookean model and Ogden model are considered for steel-rubber base isolator. Numerical simulations are carried out for Neo-Hookean model and Ogden model. It is shown that Ogden model can be used for steel-rubber base isolator in the specific ranges for isotropic hyper-elastic model

کلیدواژه ها:

Hyper-elastic model ، Neo-Hookean model ، Ogden model ، ABAQUS ،