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논문 기본 정보

자료유형
학술대회자료
저자정보
Hu Wang (Hunan University) Guangyao Li (Hunan University) Yong Cai (Hunan University)
저널정보
한국소성·가공학회 기타자료 NUMIFORM 2010
발행연도
2010.6
수록면
1,109 - 1,117 (9page)

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Several metamodeling techniques have been developed in the past two decades to reduce the computational cost of design evaluations, such as finite element (FE) simulation code. With the increase of complexity and scale of practical engineering problems, popular metamodeling techniques involving response surface methodology (RSM), Kriging (KG), radial basis functions (RBF), and multivariate adaptive regression splines (MARS) confront difficulties in solving nonlinear optimization problems, such as sheet forming optimization. In this paper, a mode pursuing sampling (MPS)-based least square support vector regression (LS-SVR) method is applied for sheet forming problems. The advantage of MPS is that the samples are concentrated near the current local minima of the design space and yet still statistically cover the entire design space. Therefore, the MPS is used to obtain local optimum samples, and corresponding metamodel is constructed by the LS-SVR based on these samples. Finally, the drawbead design is successfully optimized by the proposed metamodeling technique. The optimization results demonstrate that the MPSbased SVR is feasible for real engineering problems.

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Abstract
INTRODUCTIONS
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