Details
| Original language | English |
|---|---|
| Title of host publication | European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2000 |
| Publication status | Published - 1 Dec 2000 |
| Event | European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2000 - Barcelona, Spain Duration: 11 Sept 2000 → 14 Sept 2000 |
Publication series
| Name | European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2000 |
|---|
Abstract
In this paper we develop a model to characterize the deterioration of the nominal macroscopic mechanical response of solid materials containing microheterogeneities due to progressive microstructural failure with increased loading. In the approach, the effects of local microscopic failure are described by a variational boundary value problem with constraints on the microfields. In order to satisfy the constraints, the eigenvalues of the elasticity tensor at points throughout the heterogeneous body are reduced. Theoretical properties of the model are determined and a computational algorithm is developed to evaluate the deterioration of the microstructure. Numerical simulations, involving the finite element method to compute the degrading response of particulate reinforced materials are presented to illustrate various aspects of the model.
Keywords
- Heterogeneous materials, Microstructural deterioration
ASJC Scopus subject areas
- Computer Science(all)
- Artificial Intelligence
- Mathematics(all)
- Applied Mathematics
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European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2000. 2000. (European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2000).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Some aspects of modeling and computation of micromechanical deterioration
AU - Zohdi, Tarek I.
AU - Wriggers, Peter
PY - 2000/12/1
Y1 - 2000/12/1
N2 - In this paper we develop a model to characterize the deterioration of the nominal macroscopic mechanical response of solid materials containing microheterogeneities due to progressive microstructural failure with increased loading. In the approach, the effects of local microscopic failure are described by a variational boundary value problem with constraints on the microfields. In order to satisfy the constraints, the eigenvalues of the elasticity tensor at points throughout the heterogeneous body are reduced. Theoretical properties of the model are determined and a computational algorithm is developed to evaluate the deterioration of the microstructure. Numerical simulations, involving the finite element method to compute the degrading response of particulate reinforced materials are presented to illustrate various aspects of the model.
AB - In this paper we develop a model to characterize the deterioration of the nominal macroscopic mechanical response of solid materials containing microheterogeneities due to progressive microstructural failure with increased loading. In the approach, the effects of local microscopic failure are described by a variational boundary value problem with constraints on the microfields. In order to satisfy the constraints, the eigenvalues of the elasticity tensor at points throughout the heterogeneous body are reduced. Theoretical properties of the model are determined and a computational algorithm is developed to evaluate the deterioration of the microstructure. Numerical simulations, involving the finite element method to compute the degrading response of particulate reinforced materials are presented to illustrate various aspects of the model.
KW - Heterogeneous materials
KW - Microstructural deterioration
UR - http://www.scopus.com/inward/record.url?scp=84893362299&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84893362299
SN - 8489925704
SN - 9788489925700
T3 - European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2000
BT - European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2000
T2 - European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2000
Y2 - 11 September 2000 through 14 September 2000
ER -