INVESTIGATION OF FORMING LIMIT AND WELD LINE MOVEMENT IN THE FORMING OF TAILOR WELDED BLANKS USING EXPERIMENT AND NUMERICAL METHODS

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SAFDARIAN KOROUYEH R.; MOSLEMI NAEINI H.; NOGHABI M.; RAHIMI E.

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Paper Information

Journal: Journal of Applied and Computational Sciences in Mechanics Year:2012 | Volume:23 | Issue:2 (6) Page(s): 1-16

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Title

INVESTIGATION OF FORMING LIMIT AND WELD LINE MOVEMENT IN THE FORMING OF TAILOR WELDED BLANKS USING EXPERIMENT AND NUMERICAL METHODS

Author(s)

SAFDARIAN KOROUYEH R. | MOSLEMI NAEINI H. | NOGHABI M. | RAHIMI E. | Issue Writer Certificate

Keywords

TAILOR WELDED BLANK (TWB)Q2

FORMING LIMIT DIAGRAM (FLD)Q2

WELD LINE MOVEMENTQ2

Abstract

The forming limit diagram (FLD) is a useful method for characterizing the formability of sheet metals. In this paper, different numerical models were used to investigate the FLD of Tailor Welded Blank (TWB). TWBs were Co2 laser-welded samples of interstitial-free (IF) steel sheets with different thicknesses. The results of the numerical models were compared with the experimental FLD as well as with the empirical model proposed by the North American Deep Drawing Research Group (NADDRG). The emphasis of this investigation is to determine the performance of these different approaches in predicting the FLD. These numerical models for FLD are: second derivation of thinning (SDT), effective strain rate (ESR), major strain rate (MSR), thickness strain rate (TSR) and thickness gradient (TG). Results of this research show necking will happen, when the value of MSR, TSR, ESR criteria is maximum, TG£0.78 and SDT criterion has the first peak in forming process time. WELD LINE MOVEMENT is one of parameters which influence formability of TWBs. Maximum of WELD LINE MOVEMENT of TWB base on different numerical criteria was predicted and compared with experimental results. Results of this research show that SDT criterion has a good accuracy for prediction of forming limit diagram and also WELD LINE MOVEMENT in the forming of TWB.

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APA: Copy

SAFDARIAN KOROUYEH, R., MOSLEMI NAEINI, H., NOGHABI, M., & RAHIMI, E.. (2012). INVESTIGATION OF FORMING LIMIT AND WELD LINE MOVEMENT IN THE FORMING OF TAILOR WELDED BLANKS USING EXPERIMENT AND NUMERICAL METHODS. JOURNAL OF APPLIED AND COMPUTATIONAL SCIENCES IN MECHANICS (JOURNAL OF SCHOOL OF ENGINEERING), 23(2 (6)), 1-16. SID. https://sid.ir/paper/196284/en

Vancouver: Copy

SAFDARIAN KOROUYEH R., MOSLEMI NAEINI H., NOGHABI M., RAHIMI E.. INVESTIGATION OF FORMING LIMIT AND WELD LINE MOVEMENT IN THE FORMING OF TAILOR WELDED BLANKS USING EXPERIMENT AND NUMERICAL METHODS. JOURNAL OF APPLIED AND COMPUTATIONAL SCIENCES IN MECHANICS (JOURNAL OF SCHOOL OF ENGINEERING)[Internet]. 2012;23(2 (6)):1-16. Available from: https://sid.ir/paper/196284/en

IEEE: Copy

R. SAFDARIAN KOROUYEH, H. MOSLEMI NAEINI, M. NOGHABI, and E. RAHIMI, “INVESTIGATION OF FORMING LIMIT AND WELD LINE MOVEMENT IN THE FORMING OF TAILOR WELDED BLANKS USING EXPERIMENT AND NUMERICAL METHODS,” JOURNAL OF APPLIED AND COMPUTATIONAL SCIENCES IN MECHANICS (JOURNAL OF SCHOOL OF ENGINEERING), vol. 23, no. 2 (6), pp. 1–16, 2012, [Online]. Available: https://sid.ir/paper/196284/en

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