Multiaxial Nonproportional Cyclic Deformation

DL McDowell; DF Socie; HS Lamba

doi:10.1520/STP32443S

SYMPOSIA PAPER Published: 01 January 1982

STP32443S

Multiaxial Nonproportional Cyclic Deformation

Source

A model employing a modified Mroz kinematic hardening rule with a Tresca yield surface is derived for a state of plane stress, combining together successful attributes of previous nonproportional incremental plasticity theories. Results from several nonproportional tests on oxygen-free high-conductivity copper are compared with computer predictions. Solution sensitivity to the particular cyclic stress-stain curve used, its piecewise linearization for the Mroz-type hardening rule, and the magnitude of the effective strain increment in the analysis is studied. A trade-off between the number of surfaces used in the Mroz-type rule and the effective strain increment size is observed for optimum solution with respect to convergence and speed.

Author Information

McDowell, DL

University of Illinois, Urbana, Ill.

Socie, DF

University of Illinois, Urbana, Ill.

Lamba, HS

International Harvester Company, Hinsdale, Ill.

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Details

Developed by Committee: E08

Pages: 500–518

DOI: 10.1520/STP32443S

ISBN-EB: 978-0-8031-4835-2

ISBN-13: 978-0-8031-0713-7

Multiaxial Nonproportional Cyclic Deformation

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