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논문 기본 정보

자료유형
학술대회자료
저자정보
Chi Zhou (South China University of Technology) Juan Liao (South China University of Technology) Yin Zhu (South China University of Technology) Zhenjiao Chen (South China University of Technology)
저널정보
한국소성·가공학회 기타자료 NUMIFORM 2010
발행연도
2010.6
수록면
868 - 874 (7page)

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Advanced High Strength Steels (AHSS) are used increasingly in automobile structure parts to reduce the vehicle weight while keeping the safety standard. But their high values of the ratio of strength to Young’s modulus cause more springback problems. A method of calculating the compensated tool shape for complex bending shapes is proposed in this paper. The method is composed of 3 steps: firstly the cross-section profile of a part was discretized into points and their corresponding curvatures; then an analytic algorithm based on plastic bending theory is applied to calculate the compensated curvatures of each point; finally, a numerical algorithm based on differential geometry is used to construct the tool shape according to the compensated curvatures of each point. A wave-shaped AHSS part with three different curvatures had been used to evaluate this method. The experimental results showed that the max curvature variance between the actual bending parts and desired shape is less than 4%, which is satisfying for most engineering applications.

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Abstract
INTRODUCTION
ANALYTICAL MODEL FOR SPRINGBACK COMPENSATION
ALGORITHM FOR TOOL SHAPE CONSTRUCTING
A CASE OF SPRINGBACK COMPENSATION CALCULATION
CONCLUSIONS
REFERENCES

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