Projects per year
Abstract
We present a model for approximating residual stresses arising from thermally induced plasticity and apply it to a simple twodimensional (plane strain) test problem of transient heating. The model uses stress fields derived from simple eigenstrains to perturb an initially elasticonly solution in a way that mimics plastic flow. The plane strain condition of the test problem gives rise to plastic strains in the outofplane direction, owing to constraints on thermal expansion. However, the model is able to cope with the challenges this poses and also encapsulates the timedependent nature of the problem. We show that the model agrees well with finiteelement 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 contribution  An eigenstrain based model for residual stress arising from transient local surface heating 

Original language  English 
Pages (fromto)  1093  1116 
Number of pages  23 
Journal  Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 
Volume  466 
Early online date  2 Dec 2009 
DOIs  
Publication status  Published  2010 
Fingerprint Dive into the research topics of 'An eigenstrain based model for residual stress arising from transient local surface heating'. Together they form a unique fingerprint.
Projects
 1 Finished

A NOVEL FRAMEWORK FOR PREDICTING, MEASURING AND ANALYSING WELD INDUCED RESIDUAL STRESSES
10/10/05 → 10/04/09
Project: Research