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Modeling of laser-welded blank formability

Published online by Cambridge University Press:  29 April 2013

S. Gaied ,
L. Cretteur  and
F. Schmit
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Abstract

A laser-welded blank (LWB) offers several notable benefits including decreased part weight, reduced manufacturing costs, increased environmental friendliness and improved dimensional consistency. However, in order to take advantage of these benefits, designers need to overcome the formability of LWBs and be able to accurately predict the LWB forming characteristics early in the design process. We present a new approach to predict the maximum elongation of the laser seam; for example, for Advanced High-Strength Steel (AHSS)-based LWBs. This approach is based on a coupling model taking into account the thermal, metallurgical and mechanical phenomena. A comparison of numerical and experimental results shows very good agreement. These approaches offer a considerable advantage in obtaining the formability limits for all configurations.

Keywords

Laser-Welded Blanksultimate elongation predictionlaser seamformabilitythermo-metallurgical model
Type
Research Article
Information
Metallurgical Research & Technology , Volume 110 , Issue 3 , 2013 , pp. 199 - 203
Copyright
© EDP Sciences 2013

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