A two-dimensional moving adaptive finite element analysis is presented for dual beam laser welded tailored blanks. The simulation results show that welding with a dual-beam system to induce preheating reduces cooling rates effectively. For example, at 650° C, 1 mm away from the weld centerline, the cooling rates are calculated to be 421°C/sec and 428°C/sec in the thick (2 mm) and thin (0.8 mm) blanks, respectively, for a welding speed of 5 cm/sec and beam power of 1000 W on mild steel. For the same welding conditions, but with a preheating power of 1000 W and inter-beam spacing 1 cm, the cooling rates reduce to 228°C/sec and 240°C/sec in the thick and thin blanks, respectively.
- T. Dwayne McCay
- A. Matsunawa
- H. Hügel
Finite element analysis of heat flow in dual-beam laser welded tailored blanks
Yu-Ning Liu, Elijah Kannatey-Asibu; October 14–18, 2018. "Finite element analysis of heat flow in dual-beam laser welded tailored blanks." Proceedings of the International Congress on Applications of Lasers & Electro-Optics. ICALEO® ‘94: Proceedings of the Laser Materials Processing Conference. Orlando, FL, USA. (pp. pp. 694-703). ASME. https://doi.org/10.2351/1.5058855
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