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).

Brach, S., Dormieux, L., Kondo, D., Vairo, G. (2017). Strength properties of nanoporous materials: a 3-layered based non-linear homogenization approach with interface effects. INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE, 115, 28-42 [10.1016/j.ijengsci.2017.03.001].

Strength properties of nanoporous materials: a 3-layered based non-linear homogenization approach with interface effects

Brach, S;Vairo, G
2017-01-01

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).
2017
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore ICAR/08 - SCIENZA DELLE COSTRUZIONI
English
Con Impact Factor ISI
Nanoporous materials: Void-size effects; Non-linear homogenization; n-layered based approach; Modified secant method
Brach, S., Dormieux, L., Kondo, D., Vairo, G. (2017). Strength properties of nanoporous materials: a 3-layered based non-linear homogenization approach with interface effects. INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE, 115, 28-42 [10.1016/j.ijengsci.2017.03.001].
Brach, S; Dormieux, L; Kondo, D; Vairo, G
Articolo su rivista
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/200490
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 18
  • ???jsp.display-item.citation.isi??? 17
social impact