Anelastic release from the shock-compressed state

Conference · Mon Dec 31 23:00:00 EST 1990

DOI:https://doi.org/10.1051/jp4:1991330· OSTI ID:5773124

Johnson, J N; Lomdahl, P S

Anelastic release from the shock-compressed state is analyzed in terms of internal self stresses acting on dislocation pile-ups and pinned dislocation loops. Reverse anelastic deformation occurs immediately upon release due to these internal stresses and is responsible for departure from ideal elastic-plastic unloading wave behavior: anelastic release is commonly observed in all shock-loaded metals. The rate at which this readjustment of internal stress occurs is determined by the viscous drag coefficient in the shock-compressed state and has important consequences regarding determination of elastic moduli from unloading wave data. 6 refs., 4 figs.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5773124
• Report Number(s): LA-UR-91-941; CONF-911069--1; ON: DE91009961
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALUMINIUM
DEFORMATION
DRAG
ELASTICITY
ELEMENTS
IMPACT SHOCK
MECHANICAL PROPERTIES
METALS
SHOCK WAVES
SOLIDS
STRESSES
TENSILE PROPERTIES
WAVE PROPAGATION