CUED Publications database

An investigation into the residual stresses in an aluminium 2024 test weld

Preston, RV and Smith, SD and Shercliff, HR and Withers, PJ (1999) An investigation into the residual stresses in an aluminium 2024 test weld. American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, 393. pp. 265-277. ISSN 0277-027X

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Abstract

This paper uses finite element (FE) analysis to examine the residual stresses generated during the TIG welding of aluminium aerospace alloys. It also looks at whether such an approach could be useful for evaluating the effectiveness of various residual stress control techniques. However, such simulations cannot be founded in a vacuum. They require accurate measurements to refine and validate them. The unique aspect of this work is that two powerful engineering techniques are combined: FE modelling and neutron diffraction. Weld trials were performed and the direct measurement of residual strain made using the ENGIN neutron diffraction strain scanning facility. The predicted results show an excellent agreement with experimental values. Finally this model is used to simulate a weld made using a "Low Stress No Distortion" (LSND) technique. Although the stress reduction predicted is only moderate, the study suggests the approach to be a quick and efficient means of optimising such techniques.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div C > Materials Engineering
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:16
Last Modified: 08 Dec 2014 02:11
DOI: