Thin-walled structures under impact load


The purpose of this research is to describe the vibrations of plates and shells under impact load. Therefore viscoplastic constitutive laws are applied to shells. Further more experiments are necessary to verify these models.

The experiments are performed in a shock tube: Herein shock waves are generated, which strike the plate, clamped at the end of the tube. The pressure and the middle point displacement of the vibration, caused by the shock are measured with respect to the time.

The vibration is simulated by a finite-element program, which was developed for layered shells, assuming small strains, moderate rotations and first-order shear deformation. The constitutive models are based on Chaboche and Bodner-Partom.