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http://dx.doi.org/10.5228/KSTP.2021.30.6.275

Finite Element Analysis and Its Verification of Springback in L-bending to Evaluate the Effect of Process Design Parameters  

Cho, M.J. (한국폴리텍대학 자동차기계과)
Kim, S.J. (경상국립대학교 기계항공공학부)
Joun, M.S. (경상국립대학교 기계항공공학부)
Publication Information
Transactions of Materials Processing / v.30, no.6, 2021 , pp. 275-283 More about this Journal
Abstract
A parametric study was conducted on the effects of five fundamental design parameters on springback, including die clearance, step height, step width, punch radius, and taper relief in an L-bending process, controlled by the compression force. The experiment was also conducted to verify the usefulness of the parametric study procedure for process design, as well as the finite element predictions. The elastoplastic finite element method was utilized. The L-bending process of the york product, which is a key part of the breaker mechanism, was employed. The deformation of the material was assumed to be due to plane strain. Five samples of each design parameter were selected based on experiences in terms of process design. The finite element predictions were analyzed in detail to show a shortcut towards the process design improvement which can replace the traditional process design procedure relying on trial-and-errors. The improved process design was verified to meet all the requirements and the predictions and experiments were in good agreement.
Keywords
Parametric Study; L-Bending; Springback; Design Parameters; Elastoplastic FEM;
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