Multiscale three-dimensional stress analysis of voids clusters for the modelling of degenerated graphite in cast iron

We propose a multiscale three-dimensional model for the stress analysis of a cluster of degenerated graphite in spheroidal cast iron. The model allows to study the effect of graphite microstructure on the average stress distribution inside the cluster. At the microscale, precipitates of degenerated...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2021-02, Vol.1038 (1), p.12047
Main Authors: Rizzoni, R, Livieri, P, Tovo, R
Format: Article
Language:English
Subjects:
Cast iron
Cluster analysis
Elastic properties
Equivalence
Graphite
Inclusions
Mesoscale phenomena
Porous materials
Precipitates
Stress analysis
Stress concentration
Stress distribution
Three dimensional analysis
Three dimensional models
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Summary:We propose a multiscale three-dimensional model for the stress analysis of a cluster of degenerated graphite in spheroidal cast iron. The model allows to study the effect of graphite microstructure on the average stress distribution inside the cluster. At the microscale, precipitates of degenerated graphite are modelled as spheroidal voids. At the mesoscale, clusters of degenerated graphite are viewed as spheroidal inclusions made of equivalent porous elastic material. The equivalent elastic properties of the porous material are calculated using an approach proposed by Tandon and Weng and based on Eshelby’s equivalent principle and the Mori-Tanaka’s estimate. FE simulations at the microscale and at the mesoscale are performed in order to numerically validate the multiscale model.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/1038/1/012047