Saturday, June 11, 2011

Numerical Simulation based Optimization of Die Compensation for a Front Side Member in Sheet Metal Forming




There has been a growing interest during the past decade in using finite element methods for springback prediction. Microprocessors have become more powerful and faster for many software applications which are trigger the development of wide computational software based on finite element. Springback simulation has been well verified by many computations that both accuracy and robustness can be guaranteed with validation setting. Accommodation of springback distortion is the last steps of numerical simulation of sheet metal forming, consequently, any calculation errors resulting from previous simulation will be influence this analysis. This paper present and discussion numerical simulations procedure of die compensation by combined two methods of Displacement Adjustment (DA) and Spring Forward (SF). Both are based on comparing the deformed shape with the desired target. Surface generator is applied to create a new die surface which will be used in the next iteration. DA and SF are combined in one algorithm with the robustness of DA and steadily of SF method were applied simultaneously in the compensation simulation. Finally, an accurate compensated die surface is presented which is generated from the new approach.

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