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Numerical simulation of residual stresses for friction stir welds in copper canisters
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Technology.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Technology.ORCID iD: 0000-0002-8494-3983
2012 (English)In: Journal of Manufacturing Processes, ISSN 1526-6125, Vol. 14, no 1, 71-81 p.Article in journal (Refereed) Published
Abstract [en]

In an attempt to map the residual stress distributions after friction stir welding of copper canisters, a three-dimensional thermo-mechanical model has been formulated by coupling heat transfer and elastoplasticity analyses. The transient temperature field around the tool is simulated by a moving heat source. The simulation shows that the residual stress distribution in a thick-wall copper canister is sensitive to the circumferential angle and asymmetrical to the weld line. Both tensile and compressive stresses emerge along the weld line and its vicinity. The maximum tensile stress appears in the circumferential direction on the outer surface. The maximum tensile stress, whether it is predicted by the finite element method or measured by the hole-drilling technique and the X-ray diffraction method, does not exceed 50 MPa in general.

Place, publisher, year, edition, pages
2012. Vol. 14, no 1, 71-81 p.
Keyword [en]
Friction stir welding, Residual stress, Copper canister, Thermo-mechanical analysis
National Category
Production Engineering, Human Work Science and Ergonomics
Identifiers
URN: urn:nbn:se:kth:diva-48176DOI: 10.1016/j.jmapro.2011.10.001Scopus ID: 2-s2.0-84856607264OAI: oai:DiVA.org:kth-48176DiVA: diva2:456908
Note
QC 20120611Available from: 2011-11-16 Created: 2011-11-16 Last updated: 2012-06-11Bibliographically approved

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Sandström, Rolf

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