언더레일의 롤포밍 공정 시뮬레이션에 관한 연구

다국어 초록 (Multilingual Abstract)

Roll forming process is one of the most widely used processes in the world for forming metals. It can manufacture goods of the uniform cross section throughout the continuous processing. However, process analysis is very difficult because of the inherent complexity. Therefore, time is consuming and much money are needed for manufacturing goods. In order to overcome this difficulty, a new computational method based on the rigid-plastic finite element method is developed for the analysis of roll forming process. In this paper, the design of roll forming process and the simulation are performed to manufacture the upper member at under rail composed of three members. The cold rolled carbon steel sheet(SCP-1) is used in this simulation, and a flow stress equation is set up by conducting the tensile test. The upper member is designed using two types of design for a excellent design. Each types are simulated and compared with the strain distribution using SHAPE-RF software. In addition, the numerical magnitude of bow and camber which are the buckling phenomenon is estimated.

참고문헌 (Reference)

1 Wick C., "Tool and Manufacturing Engineers Handbook, Chapter 8." 2 : 1984

2 Halmos G. T., "Roll Forming Handbook, Chapter 5." CRC Taylor & Francis 2005

3 Ahn D. G., "Rigid-Plastic Explicit Finite Element Formulation for Two-Dimensional Analysis of Sheet Metal Forming Processes" 20 (20): 88-99, 1996

4 Hong S. M., "Development of Roll Forming Simulation Program, Society of CAD/CAM Engineers" 2000

5 Farzin M., "Determination of Buckling limit of Strain in Cold Roll Forming by the Finite Element Analysis" 125/126 : 626-632, 2002

6 Grondin G. Y., "Buckling of Stiffened Steel Plates-A Parametric Study" 50 : 151-175, 1999

7 Kiuchi M., "Automated Design System of Optimum Roll Profiles for Cold Roll Forming Proc" 423-427, 1984

8 Kiuchi M., "Analysis Study on Cold Roll Forming Process" 23 : 1-23, 1973

9 Jeong D. W., "A Study the Criterion for Membrane/Shell Mixed Element and Application to the Rigid-Plastic/Elastic-Plastic Finite Element Analysis" 13 (13): 1-10, 1999

10 Rhodes J., "A Semi-analytical Approach to Buckling Analysis for Composite Structures" 35 : 93-99, 1996