Journal of Advanced Mechanical Design, Systems, and Manufacturing
巻
6
号
4
ページ
420 - 431
発行年
2012-01-01
ISSN
1881-3054
DOI
10.1299/jamdsm.6.420
出版者
The Japan Society of Mechanical Engineers = 日本機械学会
抄録
Optimum segmented blank holder shape and its variable blank holder gaps (VBHGs) are determined by a sequential approximate optimization (SAO) with radial basis function network. In deep drawing, wrinkling and tearing of blank sheet are major defects. The optimum segmented blank holder shape and its VBHGs are determined to avoid these defects. The Forming Limit Diagram (FLD) is employed to evaluate quantitatively the wrinkling and the tearing. In the numerical examples, a square cup deep drawing is handled. The objective is to minimize the thickness deviation after sheet forming. The wrinkling and the tearing are separately evaluated as the constraints. The dimensions of the segmented blank holder shape and the BHGs are taken as the design variables. The optimization result shows that simultaneous optimization of both the segmented blank holder shape and the VBHGs is one of the effective approaches for improving product quality.
Optimization of Segmented Blank Holder Shape and Its Variable Blank Holder Gap in Deep-Drawing Process
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TE-PR-YAMAZAKI-K-420.pdf
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