Effect of residual-stress field on the ballistic performance of welded steel plate

Flores-Johnson, EA; Muránsky, O; Hamelin, CJ; Bendeich, PJ; Edwards, L

Effect of residual-stress field on the ballistic performance of welded steel plate

Date

2011-11-16

Authors

Publisher

CI-Premier Pte Ltd

Abstract

This paper presents finite element simulations examining the effect of residual stresses and pre-existing damage on the ballistic performance of welded austenitic plate. A 18-mm thick welded plate is impacted by a hemi-spherical nosed projectile in the velocity range of 300-800 m/s. Numerical models were developed using ABAQUS/Explicit. The effect of the fracture model on the ballistic performance when equivalent plastic strain is present was also studied. It was found that the preexisting plastic strain have a detrimental effect on the ballistic performance. It was also found that a failure criterion that accounts for pre-existing damage must be used to analyse the effect of residual stresses and plastic strain when impact velocity is close to the ballistic limit.

Keywords

Residual stresses, Austenitic steels, Velocity, Strain rate, Damage, Impact Tests

Citation

Flores-Johnson, E. A., Muránsky, O., Hamelin, C. J., Bendeich, P. J., & Edwards, L. (2011). Effect of residual-stress field on the ballistic performance of welded steel plate. Paper presented to the 9th International Conference on Shock & Impact Loads on Structures, 16-18 November 2011, Fukuoka, Japan. In Proceedings of the 9th International Conference on Shock & Impact Loads on Structures, 16-18 November 2011, Fukuoka, Japan, (pp. 307-312). Singapore : CI-Premier Pte Ltd.