FEM을 이용한 롤 포밍 공정의 3차원 모델링

다국어 초록 (Multilingual Abstract)

Cold-roll-forming (CRF) is a well known process used to manufacture long sheet metal products with a constant cross section. It can manufacture goods of the uniform cross section on a large scale as a continuous processing. Also it is a very important process in many industrial fields to increase of the application. However, product design procedures, in terms of rolls design and rolls pass schedule, remain rather an art than science. Therefore, many times and money are needed for manufacturing goods. In order to overcome this difficulty, a new computational method based on the rigid-plastic finite method is developed for the analysis of roll forming process and the optimum design. Analysis using FEM(Finite Element Method) and FDM(Finite Difference Method) is used in the deformation analysis.
In this paper, to make lower member for under rail roll using FEM simulation software(SHAPE-RF), the roll forming 3-D modeling and simulation are performed, Tensile test is performed about SCP-1 for input properties to program. Besides, curve fitting is executed to set up the flow stress equation. Final shape is predicted after 11-pass. The longitudinal strain is estimated on the basis of simulation result. In addition, Bow and Camber which is one of the several defects are measured.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 롤 포밍에서의 주요 인자
• 3. 공정 해석 조건
• 4. 롤 포밍 공정의 모델링
• 5. 해석 결과 및 고찰
• 6. 결론
• 참고문헌