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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 67
Edited by: B.H.V. Topping
Paper IV.2

Modelling and Simulation of Damage in Metal-Elastomer Structures at High Strains

X. Aubard+, P.-A. Boucard#, P. Ladeveze# and S. Michel#

+SNECMA Moteurs, St. Medard-en-Jalles, France
#Laboratoire de Mécanique et Technologie, E.N.S. de Cachan, Université Paris 6, Cachan, France

Full Bibliographic Reference for this paper
X. Aubard, P.-A. Boucard, P. Ladeveze, S. Michel, "Modelling and Simulation of Damage in Metal-Elastomer Structures at High Strains", in B.H.V. Topping, (Editor), "Computational Techniques for Materials, Composites and Composite Structures", Civil-Comp Press, Edinburgh, UK, pp 189-196, 2000. doi:10.4203/ccp.67.4.2
A new model is proposed in order to simulate correctly the behaviour of elastomers for very large deformations. The hyperelastic Hart-Smith's model is revisited in order to take into account the damage of elastomers and the opening and the closing of micro-defects. Applications concern structures with elastomer used in space industry. Shear loadings are typical solicitations for these structures. Whenever the material is able to undergo very large deformations (600 - 700 %), the simulation of this type of experiment up to so high strains is not easy. The failure of industrial finite element code leads us to develop a prototype software using a non-incremental method (LATIN method) and a material formulation with "rotated" quantities. Some applications are shown for elastic or hyperelastic materials, especially for nearly incompressible materials.

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