|제목(국문)||1.2GPa급 강판 판재 성형에서 스프링백 감소를 위한 금형 보상 설계|
|제목(영문)||Compensation Design to Reduce Springback in Sheet Metal Forming of 1.2GPa Ultra High Strength Steel|
이호성 (H.S.Lee ,공주대학교 금형설계공학과 ) ▷공저자네트워크등록하기
이영섭 (Y.S.Lee ,공주대학교 금형설계공학과 ) ▷공저자네트워크등록하기
김승완 (S.W.Kim ,대우공업(주) 기술연구소 ) ▷공저자네트워크등록하기
정철영 (C.Y.Jung ,대우공업(주) 기술연구소 ) ▷공저자네트워크등록하기
The manual modification of stamping die has widely been used in order to reduce springback after sheet metal forming. When UHSS (Ultra High Strength Steel) is used in sheet metal forming, the die design considering springback compensation is more difficult because higher strength sheet has more springback. In this study, the optimization method was used in order to design die geometry considering springback compensation after forming of 1.2GPa UHSS. Die geometries were defined as design variables and the springback distance from the die surface was conducted as object function in optimization process. The optimized die geometry considering springback compensation was performed using finite element and optimization analysis. The simulation results such as thickness distribution and springback amount were compared with measured data using 3D optical measurement system (GOM ARGUS, ATOS). And the prediction of springback amount showed a good agreement within test results.
|keyword||Springback Compensation, UHSS (Ultra High Strength Steel), 3D Optical Measurement|