Open Access

ARTICLE

Dynamic Nonlinear Material Behaviour of Thin Shells in Finite Displacements and Rotations

C.E. Majorana¹, V.A. Salomoni

1 Department of Structural and Transportation Engineering, Faculty of Engineering, University of Padua, Italy.

Computer Modeling in Engineering & Sciences 2008, 33(1), 49-84. https://doi.org/10.3970/cmes.2008.033.049

Abstract

A dynamic analysis of a thin shell finite element undergoing large displacements and rotations is here presented. The constitutive model adopted derives from the coupling of an hyperelastic basic model fulfilling a De Saint Venant-Kirchhoff criterion with a scalar damage function depending on the maximum value of a suitable strain measure attained through the deformation history; then plastic effects are included using an isotropic/kinematic hardening law. A conservative time integration scheme for the non-linear dynamics of the hyperelastic damaged-plastic thin shell is applied. The main characteristic of the scheme is to be conservative, since it allows for the time-discrete system to preserve the basic laws of continuum, namely the balance of the linear and angular momentum as well as the fulfilment of the second law of thermodynamics.

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Keywords

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