A Method of Die Surface Compensation after Spring Back Prediction in Sheet Metal Forming

Xiao Da Li; Xiang Hui Zhan

doi:10.4028/www.scientific.net/AMM.313-314.157

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 313-314A Method of Die Surface Compensation after Spring...

A Method of Die Surface Compensation after Spring Back Prediction in Sheet Metal Forming

Abstract:

Spring back in the process of sheet metal forming leads to deviations between design sizes and actual dimensions of stamping parts, to meet the precision requirements of deviations, the shape of die surface needs to be compensated in the opposite direction according to the predicted spring back by numerical simulation. In this article, the R S coordinate mapping method is used to revise coordinates of finite element nodes according to the predicted spring back, and the bi-cubic B spline surface interpolation method is applied to reconstruct die surface with CAD data format. An example shows that the algorithms are feasible and have some practical values.

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Periodical:

Applied Mechanics and Materials (Volumes 313-314)

Pages:

157-163

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.313-314.157

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Online since:

March 2013

Authors:

Xiao Da Li, Xiang Hui Zhan

Keywords:

Bi-Cubic B Spline Surface Interpolation, Die Surface Compensation, Numerical Simulation, R S Coordinate Mapping Method, Springback, Surface Fitting

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References

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