Mechanism Analysis of Roughness Improvement on Pierced Surface Using Press Working Punch by Finite Element Method
Bibliographic Information
- Other Title
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- FEM によるPW パンチの穴抜き面凹凸の改善メカニズムの解析
- FEM ニ ヨル PW パンチ ノ アナ ヌキ メン オウトツ ノ カイゼン メカニズム ノ カイセキ
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Abstract
Numerical simulation by a finite element method investigated the mechanism of roughness improvement in pierced holes using a press working (PW) punch. Two types of simulation, i. e. piercing and crack conjunction, were performed. Piercing simulation suggested that the PW punch suppresses both the generation and propagation of a crack in a sheet material around the punch edge because of the suppression of plastic strain localization, but promotes the generation and propagation around the die edge because of the high stress triaxiality induced. This result implies the suppression of the mismatch of the two cracks by the dominant crack from the die edge. Crack conjunction analysis based on bifurcation and stress triaxiality showed that crack mismatch increases the unevenness of a fracture area of pierced surfaces.
Journal
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- Journal of the Japan Society for Technology of Plasticity
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Journal of the Japan Society for Technology of Plasticity 53 (620), 836-841, 2012
The Japan Society for Technology of Plasticity
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Details 詳細情報について
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- CRID
- 1390001206499503232
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- NII Article ID
- 10030878918
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- NII Book ID
- AN00135062
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- COI
- 1:CAS:528:DC%2BC38XhvVCrurzN
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- ISSN
- 18820166
- 00381586
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- NDL BIB ID
- 024005341
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed