Numerical Investigations on Residual Stress in Laser Penetration Welding Process of Ultrafine-Grained Steel

Figure 11

Comparison between the measured and the simulated results: the cross section of the weld bead under the (a) 1^st and (b) 2^nd welding conditions; the stress distributions under the (c) 1^st and (d) 2^nd welding conditions.

(a)

(b)

(c)

(d)