Strain rate dependent yield behavior under compression load of metallic materials based on experimental data

Description

A matter of interest in development of empiric constitutive material laws, especially in terms of yielding, is the knowledge of the material behavior up to large deformation at different strain rates. The compression test seems to be appropriate method for gaining data up to large grades of deformation. However, the gained measurement data does not allow the exact reading of material models for direct use in numerical analyses. Reasons for deviations are influences such as friction which leads to boundary constraints and thus to a multiaxial stress state at increasing deformation. This article proposes a method to compute the actual stress in the dynamic compression test taking the friction into account. The method is based on finite element analyses and experimental data. The experimental data are gained from dynamic compression tests at different strain rate levels using mild steel.

Period	12 Jun 2017
Event title	7th International Conference on Mechanics and Materials in Design
Event type	Conference
Location	PortugalShow on map