FE modelling strategies of weld repair in pre-stressed thin components

Salerno, Gervasio and Bennett, Chris and Sun, Wei and Becker, Adib A. (2016) FE modelling strategies of weld repair in pre-stressed thin components. Journal of Strain Analysis for Engineering Design . ISSN 2041-3130 (In Press)

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Two computational procedures have been developed in the commercial finite element (FE) software codes Sysweld and Abaqus to analyse and predict the residual stress state after the repair of small weld defects in thin structural components. The numerical models allow the effects of the repair to be studied when a pre-existing residual stress field is present in the fabricated part and cannot be relieved by a thermal treatment.

In this work the modelling strategies are presented and tested by simulating a repair of longitudinal welds in thin sheets of Inconel 718 (IN718). Although the numerical strategies in the two codes are intrinsically different, the results show a significant agreement, predicting a notable effect imposed by the initial residual stress.

Item Type: Article
Keywords: Finite element modelling; Weld repair; Residual stress; Abaqus; Sysweld
Schools/Departments: University of Nottingham UK Campus > Faculty of Engineering > Department of Mechanical, Materials and Manufacturing Engineering
Depositing User: Eprints, Support
Date Deposited: 11 Aug 2016 07:29
Last Modified: 13 Sep 2016 19:30
URI: http://eprints.nottingham.ac.uk/id/eprint/35805

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