Yield Stress of Randomly Perforated Sheets and Anisotropic Yield Function
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概要
- 論文の詳細を見る
The influence of the distribution of voids on macroscopic mechanical properties is an important problem in plastic deformation of damaged materials. Since the distribution of voids in actual damaged materials is heterogeneous, we have to evaluate the heterogeneous distribution of voids quantitatively. We propose a new method using the voronoi tessellation and the stereology to evaluate the heterogeneous distribution of voids in this paper. In order to verify the availability of the new method, perforated sheets with randomly distributed holes are set up as plane models of damaged materials and are examined under uniaxial tension. Mechanical properties of perforated sheets are estimated by anisotropic yield function and the relationship between distiribution of holes and macroscopic yield stress is investigated quantitatively. It is shown that the method is valid for evaluating the heterogeneous distribution of holes.
- 一般社団法人日本機械学会の論文
- 1997-10-15
著者
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Abe Takeji
Department Of Applied Mechanics Okayama University
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Nakayama Yasuhide
Department Of Bioengineering Advanced Biomedical Engineering Center National Cardiovascular Center R
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Nakayama Yasuhide
Department Of Electronic-mechanical Engineering Yuge National College Of Maritime Technology
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Nagaki Shigeru
Department Of Mechanical Engineering Okayama University
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Nagaki Shigeru
Department Of Applied Mechanics Okayama University
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