It is a well known fact that during welding, the metal at the welding zone gets melted and then solidifies, which results in shrinkage in all directions. Residual strain and stress distributions coming from shrinking are largely influenced by the nature and configuration of the welding process, metallurgical characteristics of weld, and the geometrical shape of the weld joint. The residual stress mainly depends on the thermal history cycle through which the specimen undergoes in the welding process. So these thermal history cycles are to be known in order to get a better knowledge of the welding phenomenon and to minimize the risk of failures. In this work, a detailed analysis has been carried out for predicting the heat flow pattern and stress distribution in an aluminum alloy plate during welding. In this study, the modified double ellipsoidal heat source distribution pattern is modeled and considered for the weld pool design. Elastic-plastic material properties at various temperatures are also considered for simulation. A detailed finite element analysis is carried out to predict the welding residual stress. In this, thermal analysis is carried out for actual variable welding speed and these transient thermal histories at various locations were numerically predicted and compared with experimental results. Further, these thermal results are used to predict the residual stress on the weld plate using finite element method.
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August 2011
Research Papers
Numerical Investigation on Heat Transfer and Residual Stress in a Butt Welded Plate
D. Kumaresan,
D. Kumaresan
Scientist
Structural Dynamics and Design Analysis Division,
e-mail: d_kumaresan_cbe@rediffmail.com
Liquid Propulsion System Centre
, Trivandrum 695547, India
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A. K. Asraff,
A. K. Asraff
Structural Dynamics and Design Analysis Division,
Liquid Propulsion System Centre
, Trivandrum 695547, India
Search for other works by this author on:
R. Muthukumar
R. Muthukumar
Structural Dynamics and Design Analysis Division,
Liquid Propulsion System Centre
, Trivandrum 695547, India
Search for other works by this author on:
D. Kumaresan
Scientist
Structural Dynamics and Design Analysis Division,
Liquid Propulsion System Centre
, Trivandrum 695547, Indiae-mail: d_kumaresan_cbe@rediffmail.com
A. K. Asraff
Structural Dynamics and Design Analysis Division,
Liquid Propulsion System Centre
, Trivandrum 695547, India
R. Muthukumar
Structural Dynamics and Design Analysis Division,
Liquid Propulsion System Centre
, Trivandrum 695547, IndiaJ. Pressure Vessel Technol. Aug 2011, 133(4): 041206 (10 pages)
Published Online: May 16, 2011
Article history
Received:
March 4, 2009
Revised:
September 20, 2010
Online:
May 16, 2011
Published:
May 16, 2011
Citation
Kumaresan, D., Asraff, A. K., and Muthukumar, R. (May 16, 2011). "Numerical Investigation on Heat Transfer and Residual Stress in a Butt Welded Plate." ASME. J. Pressure Vessel Technol. August 2011; 133(4): 041206. https://doi.org/10.1115/1.4002859
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