Investigation on Formability of Tailor-Welded Blanks in Incremental Forming
محل انتشار: ماهنامه بین المللی مهندسی، دوره: 33، شماره: 5
سال انتشار: 1399
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 357
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شناسه ملی سند علمی:
JR_IJE-33-5_023
تاریخ نمایه سازی: 25 خرداد 1399
چکیده مقاله:
Steel laser tailor-welded blanks (TWBs) are produced by end-to-end joining of base sheets using different welding methods. In this article, the formability of laser TWBs of St12 and St14 with thicknesses of 1 mm and 1.5 in single point incremental forming process were experimentally and numerically investigated. First, the forming limit wall angle was experimentally determined for each of the base sheets. Then, SPIF of TWBs samples was carried out at the thinner sheet wall angle; 67°. For numerical investigation, the mechanical properties of the weld zone were obtained. For one combination of TWBs, the finite element (FE) simulation of incremental forming was performed by the use of ABAQUS/Explicit FE software. The simulation process was validated by comparing the results with those of experiments. Then, the effect of SPIF on thickness, stress and strain distribution of other combinations of TWBs was numerically investigated. The results showed that using the FE model, the SPIF of TWBs without performing high cost experimental tests can be properly investigated. Also, the results revealed that in steel laser TWBs with different thicknesses, the maximum and minimum principal strains are concentrated at the corners and the walls of the thinner sheet of TWBs, respectively. Hence, the maximum amount of effective strain is concentrated at the thinner side of TWBs corners and the weld zone of the two blanks. For the same reason, rupture is observed at these regions.
کلیدواژه ها:
Finite Element Simulation Single Point Incremental Forming Tailor ، Welded Blanks Welding Zone
نویسندگان
R. Panahi Leavoli
Advanced Material Forming Research Center, Faculty of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran
H. Gorji
Advanced Material Forming Research Center, Faculty of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran
M. Bakhshi-Jooybari
Advanced Material Forming Research Center, Faculty of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran
M. J. Mirnia
Advanced Material Forming Research Center, Faculty of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Iran