Development of a high strain rate constitutive equation for 6061-T6 aluminum
Technical Report
·
OSTI ID:4350175
A relative simple viscoplastic constitute equation is constructed from previously published experimental data for 6061-Y6 aluminum. Equilibrium strain- hardening behavior is described by a multi-element model, which includes; a Bauschinger effect, fitted to static uniaxial stress data. Elastic moduli and their dependence on strain and internal energy are determined by a MieGrueneisen equation of state evaluated from ultrasonic data and high-pressure shock-wvave data. The relaxation function is evaluated from compressive steady-wave data. The constitutive equation is used to obtain numerical flow field solutions of plate impact experiments which are compared with existing experimental unloading wave data. (auth)
- Research Organization:
- Sandia Labs., Albuquerque, N.Mex. (USA)
- DOE Contract Number:
- AT(29-1)-789
- NSA Number:
- NSA-29-020555
- OSTI ID:
- 4350175
- Report Number(s):
- SLA--73-897
- Country of Publication:
- United States
- Language:
- English
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