A vectroized elastic/plastic power law hardening material model including Lueders strain

Technical Report · Thu Mar 01 04:00:00 EST 1990

DOI:https://doi.org/10.2172/6911609· OSTI ID:6911609

Stone, C M; Wellman, G W ^[1]; Krieg, R D ^[2]

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1. Sandia National Labs., Albuquerque, NM (USA)
2. Tennessee Univ., Knoxville, TN (USA)

An elastic/plastic material model has been developed for use with the suite of Sandia Engineering Analysis Department finite element codes. This model describes post-yield strain hardening by a power law equation involving the equivalent plastic strain and includes a yield plateau or Lueders strain region. This combination of power law hardening and Lueders strain accurately represents the mechanical behavior of a large number of commonly used engineering materials. The material model is vectorized to take advantage of current super-computer architecture. The model shows only a modest increase in CPU time over the linear hardening material model currently in the codes. Several example problems are presented to show the accuracy and flexibility of the elastic/plastic power law hardening model. 12 refs., 10 figs., 3 tabs.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6911609
• Report Number(s): SAND-90-0153; ON: DE90010172
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ALLOYS
FERRITIC STEELS
FINITE ELEMENT METHOD
HARDENING
IRON ALLOYS
IRON BASE ALLOYS
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
NUMERICAL SOLUTION
PLASTICITY
STEELS
STRAINS
STRESSES
TENSILE PROPERTIES