An eigenstrain based model for residual stress arising from transient local surface heating

JM Bromley, Saimoto A., H Alizadeh, DJ Smith, CE Truman

Research output: Contribution to journalArticle (Academic Journal)peer-review

1 Citation (Scopus)

Abstract

We present a model for approximating residual stresses arising from thermally induced plasticity and apply it to a simple two-dimensional (plane strain) test problem of transient heating. The model uses stress fields derived from simple eigenstrains to perturb an initially elastic-only solution in a way that mimics plastic flow. The plane strain condition of the test problem gives rise to plastic strains in the out-of-plane direction, owing to constraints on thermal expansion. However, the model is able to cope with the challenges this poses and also encapsulates the time-dependent nature of the problem. We show that the model agrees well with finite-element simulations under moderate strength heat sources provided that appropriate plastic flow rules are used. There exists sufficient generality in the model to allow its extension to more realistic scenarios.
Translated title of the contributionAn eigenstrain based model for residual stress arising from transient local surface heating
Original languageEnglish
Pages (from-to)1093 - 1116
Number of pages23
JournalProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume466
Early online date2 Dec 2009
DOIs
Publication statusPublished - 2010

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