Analysis of viscoplasticity in 6061-T6 aluminum

Journal Article · Thu Nov 01 04:00:00 EST 1990 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.346157· OSTI ID:6182169

Rubin, M B ^[1]

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1. Earth Sciences Department, Lawrence Livermore National Laboratory, University of California, Livermore, California 94550 (USA)

Results from a previous analysis of experimental data on 6061-T6 aluminum have been used to determine values for material parameters in constitutive equations for viscoplasticity and hardening. In contrast to previous work, the present model includes the continued hardening observed in Hopkinson bar tension experiments and predicts the wave structure measured in plate impact experiments reasonably well. An interesting conclusion of the present work is that the structure of the unsteady portions of weak shocks measured in plate impact experiments can provide a sensitive measure of hardening near the onset of plasticity.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6182169
• Journal Information: Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 68:9; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALUMINIUM
ELEMENTS
HARDENING
MECHANICAL PROPERTIES
METALS
PLASTICITY
SHOCK WAVES
VISCOSITY