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Application of h-adaptive FEM and Zarka's approach to analysis of shakedown problems

โœ Scribed by Witold Cecot

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
301 KB
Volume
61
Category
Article
ISSN
0029-5981

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โœฆ Synopsis

Abstract

The Zarka shakedown approach and the hโ€adaptive finite element method are applied to evaluate residual stresses resulting from arbitrary cyclic loading. Two error indicators are used to refine the mesh: the explicit residual one which controls accuracy of the momentum balance and the interpolation error indicator which controls approximation of the modified back stresses. Validation tests performed for the Zarka method of simplified shakedown analysis suggest that such an approach may be used to obtain a quick estimate of residual states with the error acceptable for engineering purposes. Thus, it has been applied to compute residual stresses arising from service load in railroad rails. Copyright ยฉ 2004 John Wiley & Sons, Ltd.

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