Effects of Residual Interface Stress on Effective Thermal Expansion Coefficient of Particle-Filled Composite

HUANG Ru-chao; CHEN Yong-qiang

doi:10.3879/j.issn.1000-0887.2011.11.003

Volume 32 Issue 11

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HUANG Ru-chao, CHEN Yong-qiang. Effects of Residual Interface Stress on Effective Thermal Expansion Coefficient of Particle-Filled Composite[J]. Applied Mathematics and Mechanics, 2011, 32(11): 1283-1293. doi: 10.3879/j.issn.1000-0887.2011.11.003

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Effects of Residual Interface Stress on Effective Thermal Expansion Coefficient of Particle-Filled Composite

doi: 10.3879/j.issn.1000-0887.2011.11.003

LTCS & Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, P. R. China

Received Date: 2011-07-26
Rev Recd Date: 2011-08-15
Publish Date: 2011-11-15

Abstract

Abstract

The "three configurations" based surface/interface energy theory proposed by Huang et al was used to study the effective properties of thermal elastic nanocomposites.Particular emphasis was placed on the discussions of the influence of the residual interface stress on the thermal expansion coefficient of the said composites.First,the thermo-elastic interface constitutive relations expressed in terms of the first kind Piola-Kirchhoff interface stress and the Lagrangian description of the generalized Young-Laplace equation were presented.Second,the Hashin's composite sphere assemblage(CSA)was taken as the representative volume element(RVE),and the elastic deformations from the stress-free configuration to the reference configuration and from the reference configuration to the current configuration were calculated.Based on the above calculations,an analytical expression of the effective thermal expansion coefficient of thermo-elastic composite was derived.It is shown that the "residual" interface stress has a significant effect on the thermal expansion properties of the thermo-elastic nanocomposites.
- nanocomposites,
- effective thermal expansion,
- residual interface stress,
- size-dependent,

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References(32)

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