Consideration of rubber bushings in a multi-body simulation by detailed finite element models

Abstract

Within a multi-body simulation (MBS) a three-dimensional FE model is employed to represent the nonlinear properties of rubber bushings. This is implemented via a sequential force-displacement coupling between the two solvers. For a first material modelling approach of the elastomer, the modified Neo Hooke model is used in conjunction with the generalized Maxwell model. Later, however, a physically motivated material model will be used. First results for a single-mass oscillator are presented and show the general functionality of the coupled approach. Since the use of FE models in MBS causes a significantly higher computational effort, it is necessary to realize the coupling between FEM and MBS as efficient as possible, which is also a future task.