Strength properties of nanoporous materials: A 3-layered based non-linear homogenization approach with interface effects. (June 2017)

• Record Type: Journal Article
• Authors: Brach, Stella; Dormieux, Luc; Kondo, Djimedo; Vairo, Giuseppe
• Is Part Of: International journal of engineering science. Volume 115(2017)
• Page Start: 28
• Page End: 42
• Publication Date: 2017-06
• Subjects: Nanoporous materials -- Void-size effects -- Non-linear homogenization -- n-layered based approach -- Modified secant method; Engineering -- Periodicals; Ingénierie -- Périodiques; Engineering; Periodicals; 620
• DOI: 10.1016/j.ijengsci.2017.03.001
• Languages: English
• ISSNs: 0020-7225

Abstract

Abstract: 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).