INTERFACE EFFECT ON THE EFFECTIVE BULK MODULUS OF A PARTICLE-REINFORCED COMPOSITE  

作　　者：孙黎 武义明 黄筑平 王建祥 

机构地区：[1]LTCS and Department of Mechanics and Engineering Science,Peking University,Beijing 100871,China

出　　处：《Acta Mechanica Sinica》2004年第6期676-679,共4页力学学报（英文版）

基　　金：The project supported by the National Natural Science Foundation of China(10032010,10372004);Shanghai Leading Academic Discipline

摘　　要：Classical micromechanical methods for calculating the effective moduli of a heteroge- neous material are generalized to include the interface(surface)effect.By using Hashin's Composite Sphere Assemblage(CSA)model,a new expression of the bulk modulus for a particle-reinforced com- posite is derived.It is emphasized that the present study is within the finite-deformation framework such that the effective properties are not influenced by the interface stress itself solely,but influenced by the change of the interface stress due to changes of the shape and size of the interface.Hence some inadequacies in previous papers are pointed out.Classical micromechanical methods for calculating the effective moduli of a heteroge- neous material are generalized to include the interface(surface)effect.By using Hashin's Composite Sphere Assemblage(CSA)model,a new expression of the bulk modulus for a particle-reinforced com- posite is derived.It is emphasized that the present study is within the finite-deformation framework such that the effective properties are not influenced by the interface stress itself solely,but influenced by the change of the interface stress due to changes of the shape and size of the interface.Hence some inadequacies in previous papers are pointed out.

关 键 词：effective bulk modulus interface effect Hashin's Composite Sphere Assemblage 

分 类 号：TB33[一般工业技术—材料科学与工程]