期刊
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE
卷 115, 期 -, 页码 28-42出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijengsci.2017.03.001
关键词
Nanoporous materials; Void-size effects; Non-linear homogenization; n-layered based approach; Modified secant method
资金
- Sorbonne Universites
In this paper, the strength properties of a ductile nanoporous material are investigated by means of a non-linear homogenization approach based on the modified secant method. The material is described as a rigid-ideal-plastic solid matrix, obeying to a von Mises strength criterion, and containing isotropically-distributed spherical nanovoids. Aiming to properly account for local strain-rate heterogeneities, a 3-layered model is adopted. A novel closed-form macroscopic strength criterion is established, and successfully compared with available numerical data. Proposed approach results in an effective enhancement of the non-linear homogenization-based model recently provided by Dormieux and Kondo (2013). (C) 2017 Elsevier Ltd. All rights reserved.
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