Improvement of the Forming Limit of Sheet Metals by Removal of Surface Roughening with Plastic Strain
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概要
- 論文の詳細を見る
Surface roughening of sheet metals with plastic strain is removed at a given strain during the forming process, and its effect on the improvement of the forming limit is investigated. As a preliminary examination to estimate how the onset of localized necking is delayed by the removal of surface roughness, a rigid-plastic FEM simulation is first made. Experiments for soft aluminium and copper sheets are also carried out, and the increase in forming limit strain is examined for a few strain paths. It is shown that the improvement of the forming limit is considerable in the stretch forming region where the major and minor strains in the plane of a sheet are positive. For balanced biaxial stretching, for example, the forming limit strain can be increased up to about 1.3 to 1.4 times as large as that for ordinary in-plane stretching.
- 一般社団法人日本機械学会の論文
- 1987-12-16
著者
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Yamaguchi Katsuhiko
Department Of Mechanical And System Engineering Kyoto Institute Of Technology
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Takakura Norio
Department of Mechanical and System Engineering, Kyoto Institute of Technology
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Takakura Norio
Department Of Mechanical And System Engineering Kyoto Institute Of Technology
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Takakura Norio
Department Of Mechanical Engineering Faculty Of Engineering And Design Kyoto Institute Of Technology
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FUKUDA Masayoshi
Department of Mechanical Engineering, Faculty of Engineering and Design, Kyoto Institute of Technolo
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Fukuda Masayoshi
Department Of Mechanical Engineering Kyoto Institute Of Technology
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Fukuda M
Department Of Mechanical Engineering Faculty Of Engineering And Design Kyoto Institute Of Technology
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Yamaguchi Katsuhiko
Department Of Mechanical Engineering Faculty Of Engineering And Design Kyoto Institute Of Technology
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