Cyclic Plasticity: Some Properties of the Hysteresis Curve of Structural Metals at Room Temperature

[+] Author and Article Information
E. Krempl

Rensselaer Polytechnic Institute, Troy, N. Y.

J. Basic Eng 93(2), 317-323 (Jun 01, 1971) (7 pages) doi:10.1115/1.3425236 History: Received August 01, 1969; Revised February 19, 1971; Online October 27, 2010


The hysteresis curve in the transient and steady-state stage is characterized by inequalities and periodicity conditions for the tangent to the hysteresis curve (dσ/dε) and its derivative (d2 σ/dε2 ). Cyclic creep and cycle dependent stress relaxation are considered. Evidence exists that structural metals have a nonfading memory for two discrete items, the maximum stress amplitude of the cyclic steady state and the sign of dσ during the last unloading. The dσ-part of the memory can be erased by a gradual reduction in amplitude.

Copyright © 1971 by ASME
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