Conference proceeding
Probabilistic Multiscale Models for Fracture Analysis of Functionally Graded Composites
Volume 5: High Pressure Technology; Nondestructive Evaluation Division; Student Paper Competition, Vol.5, pp.281-291
ASME 2008 Pressure Vessels and Piping Conference, Chicago, Illinois, USA, Jul. 27 - 31, 2008
01/01/2008
DOI: 10.1115/PVP2008-61400
Abstract
This paper reports three multiscale models, including sequential, invasive, and concurrent models, for fracture analysis of a crack in a two-phase, functionally graded composite. The models involve stochastic description of the particle volume fractions, particle locations, and constituent material properties; a two-scale algorithm including microscale and macroscale analyses for determining crack-driving forces; and two stochastic methods for fracture reliability analysis. Numerical results indicate that the sequential and invasive multiscale models are the most computationally inexpensive models available, but they may not produce acceptable probabilistic characteristics of stress-intensity factors or accurate probability of fracture initiation. The concurrent multiscale model is sufficiently accurate, gives probabilistic solutions very close to those generated from the microscale model, and can reduce the computational effort of the latter model by more than a factor of two. In addition, the concurrent multiscale model predicts crack trajectory as accurately as the microscale model.
Details
- Title: Subtitle
- Probabilistic Multiscale Models for Fracture Analysis of Functionally Graded Composites
- Creators
- Arindam Chakraborty - University of IowaSharif Rahman - University of Iowa
- Resource Type
- Conference proceeding
- Publication Details
- Volume 5: High Pressure Technology; Nondestructive Evaluation Division; Student Paper Competition, Vol.5, pp.281-291
- Conference
- ASME 2008 Pressure Vessels and Piping Conference, Chicago, Illinois, USA, Jul. 27 - 31, 2008
- Publisher
- ASMEDC
- DOI
- 10.1115/PVP2008-61400
- ISSN
- 0277-027X
- Language
- English
- Date published
- 01/01/2008
- Academic Unit
- Mechanical Engineering
- Record Identifier
- 9984196524902771
Metrics
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