Paper number 743

THREE-DIMENSIONAL FINITE-ELEMENT ANALYSIS OF TRANSVERSE STRESSES IN SANDWICH PLATES

A. ATE, S. AIVAZZADEH, G. VERCHERY

Université de Bourgogne, Institut Supérieur de l'Automobile et des Transports, Laboratoire de Recherche en Mécanique et Acoustique
49 Rue Mademoiselle Bourgeois, B.P. 31, 58027 Nevers cedex, France
E-mail: Alain-Martial.Ate_isat@u-bourgogne.fr

Summary

In this paper, we present an interface finite-element designed for three-dimensional stress analysis in multilayers structures. The element is an eight-node brick element based on the Hellinger-Reissner mixed variational principle. Degrees of freedom at each node include three transverse stress components of the stress tensor, and three translation displacement components. This definition leads to stress equilibrium and displacement continuity through the interface. Results of a numerical example involving a sandwich plate show the effectiveness of the element model.

Keywords

heterogeneous materials, sandwich plates, interface finite-element, interface continuity, mixed variational principle, stress analysis, displacement.