Theoretical investigations into heat transfer in laser-welded steel sheetsReport as inadecuate




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Journal of Thermal Analysis and Calorimetry

, Volume 110, Issue 1, pp 159–166

First Online: 28 June 2012

Abstract

This study contains mathematical modelling and numerical analysis of heat transfer in laser beam welding process. The temperature field was obtained on the basis of numerical solution into unsteady heat transfer equation with convective term and volumetric heat sources taken into account. Volumetric heat source model describing laser beam power distribution in combined truncated cone–cylinder volume was developed. Due to the wide range of temperatures appearing in the process latent heat of fusion, evaporation as well as latent heat of phase transformations in solid state were taken into account in the solution algorithm. On the basis of developed numerical algorithms an analysis of heat transfer in laser butt-welded steel sheets as a three-dimensional initial-boundary problem was performed.

KeywordsLaser welding Heat transfer Phase transformations Latent heat Numerical modelling  Download fulltext PDF



Author: Wiesława Piekarska - Marcin Kubiak

Source: https://link.springer.com/







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