Determination of a Rubber-Like Material Model as an Inverse Problem
The purpose of this paper is to describe the selection process of a rubber-like material model useful for simulation behaviour of an inflatable air cushion under multi-axial stress states. The air cushion is a part of a single segment of a pontoon bridge. The air cushion is constructed of a polyester fabric reinforced membrane such as Hypalon®. From a numerical point of view such a composite type poses a challenge since numerical ill-conditioning can occur due to stiffness differences between rubber and fabric. Due to the analysis of the large deformation dynamic response of the structure, the LS-Dyna code is used. Since LS-Dyna contains more than two-hundred constitutive models the inverse method is used to determine parameters characterizing the material on the base of results of the experimental test.
R. L. Burguete, M. Lucas, E. A. Patterson, S. Quinn
A. Derewonko and A. Kiczko, "Determination of a Rubber-Like Material Model as an Inverse Problem", Applied Mechanics and Materials, Vol. 70, pp. 225-230, 2011