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논문 기본 정보

저자정보
(부산대학교) (부산대학교)
저널정보
한국소성·가공학회 소성·가공 소성가공 제29권 제5호(통권 제189호)
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    초록·키워드

    Flexible roll forming is an advanced sheet-metal-forming process that allows the production of parts with various crosssections. During the flexible process, material is subjected to three-dimensional deformation such as transverse bending, inhomogeneous elongations, or contraction. Because of the effects of process variables on the quality of the roll-formed products, the approaches used to investigate the roll-forming process have been largely dependent on experience and trialand-error methods. Web-warping is one of the major shape defects encountered in flexible roll forming. In this study, an SVR model was developed to predict the web-warping during the flexible roll forming process. In the development of the SVR model, three process parameters, namely the forming-roll speed condition, leveling-roll height, and bend angle were considered as the model inputs, and the web-warping height was used as the response variable for three blank shapes; rectangular, concave, and convex shape. MATLAB software was used to train the SVR model and optimize three hyperparameters (λ, ε, and γ). To evaluate the SVR model performance, the statistical analysis was carried out based on the three indicators: the root-mean-square error, mean absolute error, and relative root-mean-square error.

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      UCI(KEPA) : I410-ECN-0101-2020-551-001291601