Formability Evaluation of 3D Closed Section Parts from Sheet Metal Based on Geometrical Information

Tokugawa, Akihiro; Sato, Masahiko; Kuriyama, Yoshiaki; Suzuki, Katsuyuki

doi:10.1016/j.proeng.2017.04.020

Cited by 2 publications

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“…The authors have proposed a new formability evaluation method employing calculation of in-plane strain through development of the closed-section part shape onto the plane (Developmental Evaluation Method, DEM). 10) As explained below, two stage development using principal curvatures and a series of tangential planes enables application of DEM to shapes with large curvature.…”

Section: Methods Of Evaluating Formability Through Development Onto Tamentioning

confidence: 99%

“…The authors have proposed a new analytic formability evaluation method, using only geometrical information on products, for closed section parts manufactured from sheet blanks. 10) In this paper, the results of calculation using the proposed method are compared with the results of FEM forming simulation, with regard to sheet forming into horn tubes. The horn tube is one of the typical shapes among automotive parts.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation Method of Formability through Development onto Tangential Planes: Geometrical Evaluation for Forming of Closed Section Parts from Sheet

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New formability evaluation methods are investigated for closed section parts manufactured from sheet blanks. New methods are based on an analytical approach and geometrical information. The authors proposed developmental evaluation method in which in-plane strain is calculated by the development of product shapes. Two stage development using principal curvatures and a series of tangential planes enables application of developmental evaluation method to shapes with large curvature. In this paper, the results of calculation by the proposed method are compared with the results of FEM simulation regarding on sheet forming into horn tubes. The horn tube, which consists of circular, conical and transient portions, is one of the typical shapes of automotive parts. The conclusion is that the two sets of calculation results are in good qualitative agreement. For product shapes with widely spread, relatively small strain introduced in forming processes, the geometrical condition is dominant for the strain distribution and the prediction accuracy of the developmental evaluation method is improved.

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Section: Methods Of Evaluating Formability Through Development Onto Tamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%