지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
The objective of this study is to compensate the elastic recovery in the flexible forming process using the predictive models. The target shape was limited to two-dimensional shape having only one curvature radius in the longitudinaldirection. In order to predict the shape error the regression and neural network models were established based on the finite element (FE) simulations. A series of simulations were conducted considering input variables such as the elastic pad thickness, the thickness of plate, and the objective curvature radius. Then, at sampling points in the longitudinal-direction, the shape errors between formed and objective shapes could be calculated from the FE simulations as an output variable. These shape errors were expressed to a representative error value by the root mean square error (RMSE). To obtain the correct objective shape the die shape was adjusted by the closed-loop using the neural network model since the neural network model shows a higher capability of estimating the shape error than the regression model. Finally the experimental result shows that the formed shape almost agreed with the objective shape.
목차
Abstract
1. 서론
2. 설계변수를 고려한 성형해석
3. 탄성회복 예측모델 개발
4. 탄성회복 보정
5. 결론
참고문헌
참고문헌 (10)
참고문헌 신청
1. [학술지(정기간행물)] - M. Samuel / 2000 / Experimental and Numerical Prediction of Springback and Side Wall Curl in Ubendings of Anisotropic Sheet Metals / J. Mater. Process. Technol 105 (3) : 382 ~ 393
2. [학술지(정기간행물)] - W. D. Carden / 2002 / Measurement of Springback / Int. J. Mech. Sci 44 (1) : 79 ~ 101
3. [학술지(정기간행물)] - H. S. Cheng / 2007 / An Accelerated Springback Compensation Method / Int. J. Mech. Sci 49 (3) : 267 ~ 279
4. [학술지(정기간행물)] - R. D. Webb / 1991 / A Transfer Function Description of Sheet Metal Forming for Process Control / Trans. ASME 113 (1) : 44 ~ 52
5. [학술지(정기간행물)] - A. P. Karafillis / 1995 / Tooling and Binder Design for Sheet Metal Forming Processes Compensating Springback Error / Int. J. Mach. Tool. Manufac 36 (4) : 503 ~ 526
2. [학술지(정기간행물)] - W. D. Carden / 2002 / Measurement of Springback / Int. J. Mech. Sci 44 (1) : 79 ~ 101
3. [학술지(정기간행물)] - H. S. Cheng / 2007 / An Accelerated Springback Compensation Method / Int. J. Mech. Sci 49 (3) : 267 ~ 279
4. [학술지(정기간행물)] - R. D. Webb / 1991 / A Transfer Function Description of Sheet Metal Forming for Process Control / Trans. ASME 113 (1) : 44 ~ 52
5. [학술지(정기간행물)] - A. P. Karafillis / 1995 / Tooling and Binder Design for Sheet Metal Forming Processes Compensating Springback Error / Int. J. Mach. Tool. Manufac 36 (4) : 503 ~ 526
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UCI(KEPA) : I410-ECN-0101-2014-551-000225948