Influence of flow stress and strain hardening of high strength structural steel on the necking formation under dynamic tension

J.A. Rodriguez-Martinez; A. Rusinek; A. Arias

doi:doi:10.1051/dymat/2009224

All issues

Volume 2 (2009)

10.1051/dymat/2009224

Abstract

Issue		DYMAT 2009 Volume 2, 2009 DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading


Page(s)		1589 - 1594
Section		Numerical Simulations
DOI		https://doi.org/10.1051/dymat/2009224
Published online		15 September 2009

DYMAT 2009 (2009) 1589-1594
DOI: 10.1051/dymat/2009224

Influence of flow stress and strain hardening of high strength structural steel on the necking formation under dynamic tension

J.A. Rodriguez-Martinez¹, A. Rusinek² and A. Arias¹

¹ Department of Continuum Mechanics and Structural Analysis, University Carlos III of Madrid, Avda. de la Universidad 30, 28911 Leganés, Madrid, Spain
² Engineering School of Metz (ENIM), Laboratory of Mechanic, Biomechanic, Polymer and Structures (LABPS), Ile du Saulcy, 57000 Metz, France

Published online: 15 September 2009

Abstract
A numerical analysis on the thermo-viscoplastic behaviour of high strength structural steels when subjected to dynamic tension has been conducted. Using the calibration conducted by Nemat-Nasser and Guo [Mech. Mat. 35 (2003) 1023–1047] for DH-36 steel, the influence of the flow stress level and the strain hardening on necking formation and Critical Impact Velocity has been analysed. The numerical results obtained are compared with analytical predictions. Localization of necking and CIV values are directly linked to strain hardening parameters.