Optimization of initial blank shape for square cup deep drawing using variable blank holder force
In deep drawing, area above the trimmed line is called earing. Reduction of the earing in deep drawing is one of the major issues for cost reduction. In addition, a high BHF causes tearing while a low BHF leads to wrinkling. Therefore it is important to determine an appropriate BHF through drawing....
| Main Authors: | , |
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| Format: | Article |
| Language: | Japanese |
| Published: |
The Japan Society of Mechanical Engineers
2014-05-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/80/813/80_2014dsm0136/_pdf/-char/en |
| _version_ | 1798018140708274176 |
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| author | Marina SAIKYO Satoshi KITAYAMA |
| author_facet | Marina SAIKYO Satoshi KITAYAMA |
| author_sort | Marina SAIKYO |
| collection | DOAJ |
| description | In deep drawing, area above the trimmed line is called earing. Reduction of the earing in deep drawing is one of the major issues for cost reduction. In addition, a high BHF causes tearing while a low BHF leads to wrinkling. Therefore it is important to determine an appropriate BHF through drawing. Recently, variable BHF (VBHF) approach which varies through the punch stroke has received a lot of attention, and its validity is discussed. In this study, both initial blank shape minimizing the earing and VBHF trajectory are simultaneously determined under tearing/wrinkling constants. Our design problem is formulated as a multi-objective design optimization for evaluation the earing. First objective function is the area above the trimmed line, and second one is the area below the trimmed line. In general, numerical simulation in sheet forming is so expensive that a sequential approximate optimization (SAO) using the radial basis function (RBF) network is adopted to identify the Pareto-frontier. The validity of the proposed approach is examined through numerical simulation. It can be found from the numerical result that earing is drastically reduced by the proposed approach. |
| first_indexed | 2024-04-11T16:18:50Z |
| format | Article |
| id | doaj.art-a747d08af1094eca881a6ecf4ceab8d0 |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T16:18:50Z |
| publishDate | 2014-05-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-a747d08af1094eca881a6ecf4ceab8d02022-12-22T04:14:26ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612014-05-0180813DSM0136DSM013610.1299/transjsme.2014dsm0136transjsmeOptimization of initial blank shape for square cup deep drawing using variable blank holder forceMarina SAIKYO0Satoshi KITAYAMA1Graduate School of Natural Science & Technology, Kanazawa UniversityKanazawa University, College of Science and EngineeringIn deep drawing, area above the trimmed line is called earing. Reduction of the earing in deep drawing is one of the major issues for cost reduction. In addition, a high BHF causes tearing while a low BHF leads to wrinkling. Therefore it is important to determine an appropriate BHF through drawing. Recently, variable BHF (VBHF) approach which varies through the punch stroke has received a lot of attention, and its validity is discussed. In this study, both initial blank shape minimizing the earing and VBHF trajectory are simultaneously determined under tearing/wrinkling constants. Our design problem is formulated as a multi-objective design optimization for evaluation the earing. First objective function is the area above the trimmed line, and second one is the area below the trimmed line. In general, numerical simulation in sheet forming is so expensive that a sequential approximate optimization (SAO) using the radial basis function (RBF) network is adopted to identify the Pareto-frontier. The validity of the proposed approach is examined through numerical simulation. It can be found from the numerical result that earing is drastically reduced by the proposed approach.https://www.jstage.jst.go.jp/article/transjsme/80/813/80_2014dsm0136/_pdf/-char/endeep drawingearing reductionvariable blank holder forcecomputer-aided engineeringengineering optimizationmulti-objective design optimization |
| spellingShingle | Marina SAIKYO Satoshi KITAYAMA Optimization of initial blank shape for square cup deep drawing using variable blank holder force Nihon Kikai Gakkai ronbunshu deep drawing earing reduction variable blank holder force computer-aided engineering engineering optimization multi-objective design optimization |
| title | Optimization of initial blank shape for square cup deep drawing using variable blank holder force |
| title_full | Optimization of initial blank shape for square cup deep drawing using variable blank holder force |
| title_fullStr | Optimization of initial blank shape for square cup deep drawing using variable blank holder force |
| title_full_unstemmed | Optimization of initial blank shape for square cup deep drawing using variable blank holder force |
| title_short | Optimization of initial blank shape for square cup deep drawing using variable blank holder force |
| title_sort | optimization of initial blank shape for square cup deep drawing using variable blank holder force |
| topic | deep drawing earing reduction variable blank holder force computer-aided engineering engineering optimization multi-objective design optimization |
| url | https://www.jstage.jst.go.jp/article/transjsme/80/813/80_2014dsm0136/_pdf/-char/en |
| work_keys_str_mv | AT marinasaikyo optimizationofinitialblankshapeforsquarecupdeepdrawingusingvariableblankholderforce AT satoshikitayama optimizationofinitialblankshapeforsquarecupdeepdrawingusingvariableblankholderforce |