Finite-Element Simulation of Deformation and Breakage in Sheet Metal Forming : 1st Report, Basic Theory
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- GOTOH Manabu
- Department of Precision Engineering, Gifu University
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- IWATA Noritoshi
- Toyota Central Research and Development Laboratories Incorporated
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- MATSUI Masao
- Toyota Central Research and Development Laboratories Incorporated
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In the analysis of sheet metal forming, the constitutive equations are examined with respect to prediction of breakage strains. Breakage initiation is numerically evaluated by the method proposed previously by one of the authors (Gotoh) in which the onset of localized necking is adopted as the breakage condition. Numerical results of limiting strains evaluated by the use of the J 2-Gotoh's corner (J2G) theory and biquadratic anisotropic yield function are in good agreement with experimental results. Next, the commercial FEM code 'JNIKE3D' is improved by introducing them. The evaluation function for breakage is also introduced into the code. A modified radial return method is proposed and adopted as the stress-point integration algorithm for this anisotropic case. As an example, a necking in tensile test is simulated to verify the effectiveness of the improved JNIKE3D.
収録刊行物
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- JSME international journal. Ser. A, Mechanics and material engineering
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JSME international journal. Ser. A, Mechanics and material engineering 38 (2), 281-288, 1995-04-01
一般社団法人日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1571135652157244928
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- NII論文ID
- 110002964381
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- NII書誌ID
- AA10888746
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- ISSN
- 09148809
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- 本文言語コード
- en
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- データソース種別
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- CiNii Articles