An Improved Multiaxial Creep-Rupture Strength Criterion

[+] Author and Article Information
R. L. Huddleston

Engineering Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tenn. 37831

J. Pressure Vessel Technol 107(4), 421-429 (Nov 01, 1985) (9 pages) doi:10.1115/1.3264476 History: Received July 10, 1984; Revised May 21, 1985; Online November 05, 2009


An improved strength model is developed for predicting creep rupture under multiaxial stress states. The new model incorporates three independent stress parameters and distinguishes between life under tensile versus compressive stress states. Assessments of the new model based on experimental biaxial creep-rupture data for type 304 stainless steel tested at 593°C show the new model to be significantly more accurate than the classical criteria of von Mises, Tresca, or Rankine.

Copyright © 1985 by ASME
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