Effective viscoelastic behavior of particulate polymer composites at finite concentration  

作　　者：李丹 胡更开 

机构地区：[1]Department of Applied Mechanics,Beijing Institute of Technology [2]National Key Lab for the Prevention and Control of Explosion Disaster,Beijing Institute of Technology,Beijing 100081,P.R.China

出　　处：《Applied Mathematics and Mechanics(English Edition)》2007年第3期297-307,共11页应用数学和力学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (No.10325210)

摘　　要：Polymeric materials usually present some viscoelastic behavior. To improve the mechanical behavior of these materials, ceramics materials are often filled into the polymeric materials in form of fiber or particle. A micromechanical model was proposed to estimate the overall viscoelastic behavior for particulate polymer composites, especially for high volume concentration of filled particles. The method is based on Laplace transform technique and an elastic model including two-particle interaction. The effective creep compliance and the stress and strain relation at a constant loading rate are analyzed. The results show that the proposed method predicts a significant stiffer response than those based on Mori-Tanaka＇s method at high volume concentration of particles.Polymeric materials usually present some viscoelastic behavior. To improve the mechanical behavior of these materials, ceramics materials are often filled into the polymeric materials in form of fiber or particle. A micromechanical model was proposed to estimate the overall viscoelastic behavior for particulate polymer composites, especially for high volume concentration of filled particles. The method is based on Laplace transform technique and an elastic model including two-particle interaction. The effective creep compliance and the stress and strain relation at a constant loading rate are analyzed. The results show that the proposed method predicts a significant stiffer response than those based on Mori-Tanaka＇s method at high volume concentration of particles.

关 键 词：particulate polymer composite VISCOELASTICITY MICROMECHANICS finite concentration 

分 类 号：O345[理学—固体力学]