Estimation of Plateau Stress of Porous Aluminum Based on Mean Stress on Maximum-Porosity Cross Section
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- Utsunomiya Takao
- SIT Research Laboratories, Shibaura Institute of Technology
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- Yamaguchi Ryo
- Department of Mechanical System Engineering, Graduate School of Engineering, Gunma University
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- Hangai Yoshihiko
- Department of Mechanical System Engineering, Graduate School of Engineering, Gunma University
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- Kuwazuru Osamu
- Graduate School of Engineering, University of Fukui
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- Yoshikawa Nobuhiro
- Institute of Industrial Science, The University of Tokyo
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Abstract
Porous aluminum with high porosity is very lightweight and has high energy absorptivity. Plateau stress is an important mechanical property that is closely related to the energy absorptivity of porous aluminum. In this study, we attempt to estimate the plateau stress of porous aluminum by simply assuming that when the mean true compressive stress on a maximum-porosity cross section perpendicular to the direction of compressive loading reaches the critical value, a locally deformed layer appears and the nominal compressive stress becomes equal to the plateau stress. Through the comparison of compressive test results with the estimated results obtained according to this assumption, it was shown that the plateau stress can be evaluated approximately when the proof stress is used as the critical value.
Journal
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 54 (7), 1182-1186, 2013
The Japan Institute of Metals and Materials
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Details 詳細情報について
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- CRID
- 1390001204249642880
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- NII Article ID
- 10031183666
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- NII Book ID
- AA1151294X
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- COI
- 1:CAS:528:DC%2BC3sXhsVGjt77O
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- ISSN
- 13475320
- 13459678
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- NDL BIB ID
- 024647631
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed