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Stress mode dependent weighting functions for simulation of asymmetric creep effects

  1. Rolf Mahnken*

Article first published online: 24 NOV 2004

DOI: 10.1002/pamm.200410094

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PAMM

PAMM

Volume 4, Issue 1, pages 225–226, December 2004

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How to Cite

Mahnken, R. (2004), Stress mode dependent weighting functions for simulation of asymmetric creep effects. Proc. Appl. Math. Mech., 4: 225–226. doi: 10.1002/pamm.200410094

Author Information

  1. University of Paderborn, Chair of Mechanics in Engineering (LTM), Warburger Str. 100, D-33098 Paderborn, Germany

*Phone: +49 5251 602283, Fax: +49 5251 603483

Publication History

  1. Issue published online: 24 NOV 2004
  2. Article first published online: 24 NOV 2004

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Abstract

The paper presents a framework for creep modeling of materials, which experimentelly exhibit different behaviour in different loading scenarios such as tension, compression and shear, respectively. To this end the characterization of the stress modes is obtained in the octahedral plane of the deviatoric stress space in terms of the Lode angle, such that stress mode dependent scalar weighting functions can be constructed. These are exploited to formulate an additive decomposition of the flow rule into a sum of weighted stress mode related quantities. Verification of the approach is succeeded for a superalloy RENE95. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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