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Numerical simulation of side heating for controlling angular distortion in multipass MMAW butt welded plates

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Abstract

Distortion is a severe problem in weld products. It depends on various process parameters like plate thickness, current, voltage, type of weld joint and restraints put on. If distortion is not properly dealt during welding then the product may become useless from geometric accuracy point of view. In the present study, a 3-D coupled transient thermal analysis model with auxiliary side heating (parallel heating) is developed to control angular distortion. During analysis, parallel heating flames are placed at several locations from weld line in cross direction. A user defined subroutine is used to apply transient heat source and side heating flames. Element birth and death technique is used to simulate the filler material deposition. One side multipass ‘V’ butt weld configuration is used for this study. A series of observational tests are done with a special experimental fixture using Manual Metal Arc Welding (MMAW) to validate the proposed FEA model. It is found that the angular distortion has decreased from 2 mm to 0.4 mm with change in side heating distance from 50 to 90 mm from the weld line.

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Authors and Affiliations

  1. Department of Mechanical Engineering, College of Engineering Kopargoan (Affiliated to University of Pune), Dist. Ahmednagar, 423 603, India

    ADINATH V DAMALE

  2. K. K. Wagh. Institute of Engineering Education and Research, Nashik (Affiliated to University of Pune), Nashik, 422 003, India

    KESHAV N NANDURKAR

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  1. ADINATH V DAMALE
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Correspondence to ADINATH V DAMALE.

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DAMALE, A.V., NANDURKAR, K.N. Numerical simulation of side heating for controlling angular distortion in multipass MMAW butt welded plates. Sadhana 40, 487–502 (2015). https://doi.org/10.1007/s12046-014-0322-x

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  • DOI: https://doi.org/10.1007/s12046-014-0322-x

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