Details
| Original language | English |
|---|---|
| Title of host publication | Computational Plasticity XI |
| Subtitle of host publication | fundamentals and applications ; volumen containing the full length papers accepted for presentation at the "XI International Conference on Computational Plasticity. Fundamentals and Applications", Barcelona, Spain, 07 - 09 September 2011 |
| Editors | E. Oñate, D.R.J. Owen, D. Peric, B. Suárez |
| Pages | 1082-1091 |
| Number of pages | 10 |
| Edition | First edition |
| Publication status | Published - Dec 2011 |
| Event | 11th International Conference on Computational Plasticity, COMPLAS XI - Barcelona, Spain Duration: 7 Sept 2011 → 9 Sept 2011 |
Abstract
In this paper, considering a cohesive zone model (CZM) for finite thickness interfaces recently proposed by the authors, the stiffness of polycrystalline materials with imperfect interfaces is characterized. Generalized expressions for the Voigt and Reuss estimates of the effective elastic modulus of the composite are derived to interpret the numerical results. Considering a polycrystalline material with a hierarchical microstructure, the interaction between interfaces at the different hierarchical levels is numerically investigated. A condition for scale separation, which suggests how to design the optimal microstructure to maximize the material tensile strength is determined. An original interpretation of this phenomenon based on the concept of flaw tolerance is finally proposed.
Keywords
- Cohesive zone models, Finite element method, Hierarchical materials, Imperfect interfaces, Polycrystalline materials
ASJC Scopus subject areas
- Materials Science(all)
- Polymers and Plastics
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Computational Plasticity XI: fundamentals and applications ; volumen containing the full length papers accepted for presentation at the "XI International Conference on Computational Plasticity. Fundamentals and Applications", Barcelona, Spain, 07 - 09 September 2011. ed. / E. Oñate; D.R.J. Owen; D. Peric; B. Suárez. First edition. ed. 2011. p. 1082-1091.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Stiffness and strength of hierarchical polycrystalline materials with imperfect interfaces
AU - Paggi, Marco
AU - Wriggers, Peter
PY - 2011/12
Y1 - 2011/12
N2 - In this paper, considering a cohesive zone model (CZM) for finite thickness interfaces recently proposed by the authors, the stiffness of polycrystalline materials with imperfect interfaces is characterized. Generalized expressions for the Voigt and Reuss estimates of the effective elastic modulus of the composite are derived to interpret the numerical results. Considering a polycrystalline material with a hierarchical microstructure, the interaction between interfaces at the different hierarchical levels is numerically investigated. A condition for scale separation, which suggests how to design the optimal microstructure to maximize the material tensile strength is determined. An original interpretation of this phenomenon based on the concept of flaw tolerance is finally proposed.
AB - In this paper, considering a cohesive zone model (CZM) for finite thickness interfaces recently proposed by the authors, the stiffness of polycrystalline materials with imperfect interfaces is characterized. Generalized expressions for the Voigt and Reuss estimates of the effective elastic modulus of the composite are derived to interpret the numerical results. Considering a polycrystalline material with a hierarchical microstructure, the interaction between interfaces at the different hierarchical levels is numerically investigated. A condition for scale separation, which suggests how to design the optimal microstructure to maximize the material tensile strength is determined. An original interpretation of this phenomenon based on the concept of flaw tolerance is finally proposed.
KW - Cohesive zone models
KW - Finite element method
KW - Hierarchical materials
KW - Imperfect interfaces
KW - Polycrystalline materials
UR - http://www.scopus.com/inward/record.url?scp=84858980685&partnerID=8YFLogxK
M3 - Conference contribution
SN - 9788489925731
SP - 1082
EP - 1091
BT - Computational Plasticity XI
A2 - Oñate, E.
A2 - Owen, D.R.J.
A2 - Peric, D.
A2 - Suárez, B.
T2 - 11th International Conference on Computational Plasticity, COMPLAS XI
Y2 - 7 September 2011 through 9 September 2011
ER -