空心球复合材料热弹性性质的一些精确结果

何陵辉; 成振强; 刘人怀

空心球复合材料热弹性性质的一些精确结果

1.
中国科学技术大学, 合肥230026;
2.
暨南大学, 广州510632

详细信息

中图分类号: O343
计量
- 文章访问数: 1941
- HTML全文浏览量: 171
- PDF下载量: 762
- 被引次数: 0
出版历程
- 收稿日期: 1995-09-18
- 刊出日期: 1998-05-15

Some Exact Results Concerning Thermoelastic Properties of Hollow Sphere Composites

1.
University of Science and Technology of Chian, Hefei 230026, P.R.China;
2.
Jinan University, Guangzhou 510632, P.R.China

摘要

摘要: 本文基于所提出的基体均匀场方法研究了空心球增强复合材料的热弹性性质。导出了均匀边界条件激发的局部热场和力学场量的关系,并进而得到了复合材料等效热弹性性质之间的精确关系。对于具有某种特定内外径比的空心球所构成的宏观各向同性复合材料,如果基体和空心球的热膨胀系数相同,可以证明其等效体积模量和线膨胀系可以精确地确定。
- 复合材料 /
- 空心球 /
- 热弹性性质
Abstract: Thermoelastic properties of hollow sphere composites are studied,based on the uniform matrix-field concept proposed here.Some connections between local thermal and mechanical fields produced by certain homogeneous boundary conditions are derived,and furthermore,exact relations are also obtained between the effective thermoelastic properties of the composites.For a macroscopically isotropic composite with a certain ratio of the outer radius to the inner radius,it is found that the effective bulk modulus and the linear coefficient of thermal expansion can be exactly determined,if the thermal expansion coefficient of the matrix and that of the sphere are the same.
- composites /
- hollow spheres /
- thermoelstic properties

HTML全文

参考文献(15)

[1]	K.J.Lee and R.A.Westmann,Elastic properties of hollow-sphere-reinforced composites,J.Com po.Mater.,4(1970),242.
[2]	Y.P.Qiu and G.J.Weng,Elastic moduli of thickly coated particle and fiber-reinforced composites, J.Appl.Mech.,58(1991),388.
[3]	J.S.Huang and L.J.Gibson,Elastic moduli of a composite of hollow spheres in a matrix,J. Mech.Phys.Solids,41(1993),55.
[4]	M.Cherkaoui,H.Sabar and M.Berveiller,Micromechanical approach of the coated inclusion problem and applications to composite materials,J.Engn.Mater.Techn.,116(1994),274.
[5]	R.Hiu,Theory of mechanical properties of fiber-strengthened materials-Ⅰ.Elastic behaviour,J. Mech.Phys.Solids,12(1964),199.
[6]	V.M.Levin,Thermal expansion of heterogeneous materials,Mekh.Tverdoga Tela,2(1967),88.
[7]	B.W.Rosen and Z.Hashin,Effective thermal expansion coefficients and specific heats of composite materials,Int.J.Engng Sci.,8(1970),157.
[8]	G.J.Dvorak,Thermal expansion of elastic-plastic composite material,J.Appl.Mech.,53 (1986),737.
[9]	G.J.Dvorak,On uniform fields in heterogeneous media,Proc.R.Soc.Lond.,A431(1990),89.
[10]	K.Schulgasser,Environmentally-induced expansion of heterogeneous media,J.Appl.Mech.,5(1989),546.
[11]	G.J.Dvorak and T.Chen,Thermal expansion of three-phase composite materials,J.Appl. Mech.,56(1989),416.
[12]	Y.Benveniste,Exact results in the micromechanics of fibrous piezoelectric composites exhibiting py-roelectricity,Proc.R.Soc.Lond.,A441(1993),59.
[13]	Y.Benveniste,Exact connections between polycrystal and crystal properties in two-dimensional poly-crystalline aggregates,Proc.R.Soc.Lond.,A447(1994),1.
[14]	T.Chen,Piezoelectric properties of multiphase fierous composites:some theoretical resuts,J. Mech.Phys.Solids,41(1993),1781.
[15]	Z.Hashin,Analysis of composite materials-a survey,J.Appl.Mech.,50(1983),481.