소성∙가공 (Transactions of Materials Processing)
- 제3권4호
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- Pages.401-414
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- 1994
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- 1225-696X(pISSN)
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- 2287-6359(eISSN)
3점 굽힘에서의 스프링백에 관한 연구
A Study on the Springback for Three Point Bending
초록
Springback for the three point bending is anlayzed and experimented. Neutral axis is assumed to remain at the midthickness for large ratio of radius of curvature to thickness. Pure bending theory is used to be extended to the analysis of the springback for three point bending. The specimen is thought to be divided into numerous small elements. The theory for pure bending is then adopted for analysis of each element to obtain springback in terms of the relationship between initial and final deflections. the boundary conditions between neighborhood elements are the deflection and slope which should be the same. Deflection is calculated by summing up the deflections of each element. Experiments have been performed for different conditions which are punch radius, span length, and initial deflections. Comparisons between the analytical solution and experimental results show the same trends.
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