An Experimental Determination of Johnson Cook Material and Failure Model Constants for Armour Steel

Abstract:

An experimental programme for determination of the Johnson Cook material and failure model constants for a typical armour steel material is reported. Tensile tests on specimens made from the armour material have been conducted at quasi-static and dynamic strain rates and at ambient and elevated temperatures. The analysis of the experimental data generates the model constants that are required as inputs during numerical simulation of dynamic events like armour impact using Johnson Cook constitutive relation and failure model implemented in most of the commercially available Finite Element codes.

• Periodical: Applied Mechanics and Materials (Volumes 592-594)
• Pages: 990-995
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.592-594.990
• Online since: July 2014
• Authors: Arkadeb Banerjee*, Sankar Dhar, Sanjib Acharyya, Debasis Datta, Nityananda Nayak
• Keywords: Armour Steel, Failure Model, Finite Element Modeling (FEM), Johnson – Cook Material, Strain Rate, Thermal Softening, Triaxiality

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