A novel analytical model and energy analysis of thermal stresses in two-phase composites |
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Authors: | Ladislav Ceniga |
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Institution: | (1) Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 043 53 Košice, Slovak Republic |
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Abstract: | This paper deals with analytical modelling of thermal stresses in a multi-particle-matrix system with isotropic spherical
particles. These particles are periodically distributed in an isotropic infinite matrix. This model system which is characterized
by microstructural parameters (particle volume fraction, particle radius) is applicable to two-phase composites of a precipitate-matrix
type with isotropic phases. The thermal stresses originate during a cooling process due to a difference in thermal expansion
coefficients. The analytical modelling which is based on fundamental equations of solid continuum mechanics represents a combination
of different mathematical procedures applied to equilibrium and compatibility equations. This novel analytical model is compared
with that which is based on mathematical procedures applied to the equilibrium equations only. The energy analysis of both
analytical models which is applied to the SiC-Al2O3 composite is presented. |
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Keywords: | |
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