An Experimental Investigation of Yield Surfaces and Loading Surfaces of Pure Aluminum With Stress-Controlled and Strain-Controlled Paths of Loading

[+] Author and Article Information
Aris Phillips

Department of Mechanical Engineering, Yale University, New Haven, Conn. 06520

Wei-yang Lu

Department of Engineering Mechanics, University of Kentucky, Lexington, KY

J. Eng. Mater. Technol 106(4), 349-354 (Oct 01, 1984) (6 pages) doi:10.1115/1.3225729 History: Received June 15, 1984; Online September 15, 2009


Tension-torsion tests with a computer controlled servohydraulic testing machine are reported. Yield surfaces were obtained during a load controlled path, which includes combined stress creep, as well as during a strain controlled path, which includes combined stress relaxation. These surfaces and their relation to the corresponding loading surfaces is discussed. The development of plastic strain increments and their relation to the yield surfaces and loading surfaces is also discussed.

Copyright © 1984 by ASME
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