Abstract
In recent years laser beam forming has emerged as a new and very promising technique to form sheet metal by thermal residual stresses. There are many advantages of laser forming compared to conventional sheet bending. Among these include design flexibility, production of complex shapes, which is unachievable by the conventional methods, forming of thick plates, possibility of rapid prototyping etc. Many numerical and experimental investigations of laser forming processes were carried out to understand the mechanisms and the effects of various parameters on the characteristics of the formed parts. The objective of this work is to investigate the effect of different beam geometries on laser bending process of metal sheets. In this paper, a comprehensive thermal and structural finite element (FE) analysis is conducted to investigate the effect that these laser beam geometries have on the process and the final product characteristics. To achieve this, the temperature distribution, deformation, plastic strains and stresses produced by different beam geometries are compared numerically.
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