Dynamic Response Of Elastoplastic Mindlin Plate By Mode Superposition Method

✍ Scribed by E. Manoach

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 316 KB
• Volume: 162
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.1993.1109

✦ Synopsis

The dynamic elastic-plastic response of a thick circular plate has been investigated by using the Mindlin plate theory. The normal modes and frequencies of free vibrations of an "assumed elastic" plate are used to transform the space displacements into modal generalized displacements. In each time subinterval the non-linear terms are grouped together with external loads and the pseudo-loads so obtained are interpolated by a quadratic polynomial of time and are determined by an iterative procedure. Numerical results are obtained for simply supported and clamped plates subjected to different type of pulse loads (rectangular and two types of triangular pulses). The influence of the pulse shape, pulse duration and inelastic strains on the plate response is considered.