유한요소법을 사용한 6 mm 후판의 비대칭 롤포밍 성형변형특성에 관한 연구 (A Study on the Roll Forming Characteristics of an Asymmetric Roller with a 6 mm Steel Plate using the Finite Element Method)

서지정보

· 발행기관 : 대한금속·재료학회
· 수록지 정보 : 대한금속·재료학회지 / 47권 / 8호 / 494 ~ 499페이지
· 저자명 : 김성수, 이경환, 정한식, 김동욱, 이재현, 최희규

초록

As a novel method to produce a steel beam with 6mm thickness for buildings, a continuous roll
forming process is reported. The roll shape is asymmetric and consists of 6 pairs of rollers to bend the steel
plate from 0˚ to 90˚. Results obtained upon application of the roll forming process showed that the angle of
the section plate is 90˚. However, defects such as bowing and camber as high as 3.2 [˚/m] were observed. A
FEM (Finite Element Method) analysis was applied to investigate the causes of the results for the region
between rollers no. 5 and no. 6. The results of a FEM simulation of deformation and stress showed that there
are some strong peak stresses on the upper surface and bottom surface of the material. The positions of the
peak stresses did not show a correspondence between the upper and bottom surfaces. Thus, the defects in
the process of roll forming with a 6 mm thick steel plate occur by the unbalanced stresses between the upper
surface and bottom surface of the material in this study.

영어초록

As a novel method to produce a steel beam with 6mm thickness for buildings, a continuous roll
forming process is reported. The roll shape is asymmetric and consists of 6 pairs of rollers to bend the steel
plate from 0˚ to 90˚. Results obtained upon application of the roll forming process showed that the angle of
the section plate is 90˚. However, defects such as bowing and camber as high as 3.2 [˚/m] were observed. A
FEM (Finite Element Method) analysis was applied to investigate the causes of the results for the region
between rollers no. 5 and no. 6. The results of a FEM simulation of deformation and stress showed that there
are some strong peak stresses on the upper surface and bottom surface of the material. The positions of the
peak stresses did not show a correspondence between the upper and bottom surfaces. Thus, the defects in
the process of roll forming with a 6 mm thick steel plate occur by the unbalanced stresses between the upper
surface and bottom surface of the material in this study.

참고자료

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