Strain rate sensitivity of a mild steel at room temperature and strain rates of up to 105s−1

Abstract

Experimental results on a mild steel are reported from ballistics tests which gave rise to strain rates of up to 10⁵ s⁻¹. A finite-difference numerical technique which incorporates material inertia, elastic-strain hardening and strain-rate sensitivity is used to establish the strain-rate sensitivity constants p and D in the equation, σ⁴ = σ¹ (1+(∊/D)^{1/ p}). The rate sensitivity established in this study is compared with those reported by other researchers.