INFLUENCE OF PARTICLE-SIZE DISTRIBUTION ON EFFECTIVE PROPERTIES OF NANOCOMPOSITES
Classical micromechanics methods in predicting the effective properties ofparticle-filled composites do not admit the size dependence of particles.However,when particle sizes are in the nanometer range,the surface/interface energy effectwill become prominent,which renders the effective properties of composites to besize-dependent.In this paper,the influence of particle-size distribution on theeffective properties of nanocomposites is studied.First,equations for the constitutiverelation of the interface expressed in terms of the first kind Piola-Kirchhoff interfacestress,and the Lagrangian description of the Young-Laplace equations are re-derived.Second,the Mori-Tanaka method is extended to take into account the effect ofparticle-size distribution.Finally,closed-form solutions are obtained for the effectivebulk and shear moduli of nanocomposites,which are shown to be dependent oninterface energy,average radius of particles,and particle-size dispersion.It is foundthat the effect of particle-size distribution can significantly influence the mechanicalproperties of composite materials containing second phase nano-particles.
nanocomposites interface energy effect particle-size distribution first kind Piola-Kirchhoff interface stress Lagrangian description of the Young-Laplace equations
Z.P.Huang Z.Q.Wang Y.P.Zhao J.Wang
LTCS and Department of Mechanics and Aerospace Engineering,College of Engineering,Peking University, State Key Laboratory of Nonlinear Mechanics,Institute of Mechanics,Chinese Academy of Sciences,Beiji
国际会议
第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)
安徽黄山
英文
925-932
2008-06-03（万方平台首次上网日期，不代表论文的发表时间）