Abstract
This paper describes an Eulerian formulation for solid-fluid interaction dynamics. The present approach establishes one governing equation for both solid and fluid models using mixture theory assuming incompressibility in the full Eulerian framework. Hyperelasticity for solid and Newtonian fluid are employed in the constitutive equations. A discretization of the proposed formulation for solid-fluid interaction dynamics is based on an explicit finite element method. The explicit finite element method reduces computational cost, except that the finite different method instead of the finite element method is used to solve Poisson and advective equations. In this study, we focus on solid-fluid interaction analysis for automotive rubber bush. In the analyses, the strain velocity affects the stiffness. It is one of a characteristic of rubber bush so-called the velocity dependence. Our final goal is to simulate the rubber bush considering the mechanical characteristic.
