Deformation and failure of blast-loaded square plates

✍ Scribed by N.S. Rudrapatna; R. Vaziri; M.D. Olson

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 301 KB
• Volume: 22
• Category: Article
• ISSN: 0734-743X
• DOI: 10.1016/s0734-743x(98)00046-3

✦ Synopsis

Numerical results for clamped, thin square steel plates subjected to blast loading are presented. The numerical analysis is based on a finite element formulation, which includes the nonlinear effects of geometry and material as well as strain rate sensitivity. A phenomenological interactive failure criterion comprising bending, tension and transverse shear is proposed to predict the various modes of failure. A node release algorithm is developed to simulate the progression of plate rupture from the boundary. The analysis is continued in the post-failure phase to account for the free flight deformation of the torn plate. The predicted failure modes for a blast-loaded plate are presented and compared with previously published experimental data.