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논문 기본 정보

자료유형
학술대회자료
저자정보
Wan-gi Cha (Sogang university) Hong-lae Kim (Sogang university) Naksoo Kim (Sogang university)
저널정보
한국소성·가공학회 기타자료 The 8th International Conference and Workshop on numerical simulation of 3D seet metal forming processes (NUMISHEET 2011)
발행연도
2011.8
수록면
398 - 405 (8page)

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초록· 키워드

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In the cold roll forming process, the sheet metal strip is gradually and successively bent into a desired profile. Occurrences of spring back, twist, and bow are major defects in roll formed profiles. We developed a dedicated analysis program based on the elastic-plastic finite element method to simulate roll forming processes with arbitrary shaped rolls. We applied the augmented Lagrangian technique in contact algorithm. Simplified cross sections with different flange heights produced via three passes of roll forming have been experimented to be measured in the amounts of twist and bow occurred after roll forming. The performance of the developed FEA tool has been verified with measurements in terms of accuracy. Considering that the forming defects reflect all the deformation models, it is concluded that the developed tool could yield quite reasonable results.

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Abstract
INTRODUCTION
THEORY
MODELING OF THE ROLL-FORMING PROCESS
SIMULATION RESULTS AND COMPARISONS WITH EPERIMENTAL MEASUREMENTS
SUMMARY AND CONCLUSIONS
REFERENCES

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