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Finite element simulations of the bending of a flat plate to u-shaped beam cross-section and the welding to rectungular hollow cross-section and neutron diffraction determination of residual stresses
Luleå tekniska universitet.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
University of Salford, Department of Civil Engineering.
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1990 (English)In: Recent trends in welding science and technology: TWR '89 proceedings / [ed] Stan A. David; J.M. Vitek, Materials Park, Ohio: ASM International, 1990, 107-111 p.Conference paper, Published paper (Refereed)
Abstract [en]

Results of strains from finite element calculations and measurements by the neutron diffraction method in a hollow welded steel beam profile are presented. To calculate the residual strains, each step in the manufacturing process has to be simulated. The D-shaped beam profile is built up by a plate which is flanged into a U-cross-section profile and then welded together with a plate on the top edges. The finite element analysis includes simulation of the manufacturing of the cross-section by bending where large deformations are accounted for. Then, the finite element simulation of the welding pass follows. Plane strain conditions were assumed. The material was assumed to be thermoelastic--plastic, with temperature dependent mechanical material properties. To verify the calculations, measurements of strain were made at approx 40 points, in three orthogonal directions, using the neutron diffraction method. The neutron technique differs from the established X-ray diffraction in the way that the neutrons can penetrate substantial distances into the interior of components which the X-ray cannot.

Place, publisher, year, edition, pages
Materials Park, Ohio: ASM International, 1990. 107-111 p.
National Category
Other Mechanical Engineering
Research subject
Computer Aided Design
Identifiers
URN: urn:nbn:se:ltu:diva-38170Local ID: c7b49610-5020-11de-afea-000ea68e967bISBN: 0-87170-372-6 (print)OAI: oai:DiVA.org:ltu-38170DiVA: diva2:1011669
Conference
International Conference on Trends in Welding Research : 14/05/1989 - 18/05/1989
Note
Godkänd; 1990; 20090603 (andbra)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-10-19Bibliographically approved

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