Effect of functionally-graded interphase on the elasto-plastic behavior of nylon-6/clay nanocomposites;a numerical study  

作　　者：Maziyar Bazmaraa Mohammad Silani Iman Dayyani 

机构地区：[1]Department of Mechanical Engineering,University of Houston,TX 77204,United States [2]Centre for Structures,Assembly and Intelligent Automation,Cranfield University,Cranfield,Bedford MK430AL,United Kingdom [3]Department of Mechanical Engineering,Isfahan University of Technology,Isfahan,84156-83111,Iran

出　　处：《Defence Technology（防务技术）》2021年第1期177-184,共8页Defence Technology

基　　金：the Iran National Science Foundation(INSF).

摘　　要：In nanocomposites,the interphase thickness may be comparable to the size of nano-particles,and hence,the effect of interphase layers on the mechanical properties of nanocomposites may be substantial.The interphase thickness to the nano-particle size ratio and properties variability across the interphase thickness are the most important affecting parameters on the overall behavior of nanocomposites.In this study,the effect of properties variability across the interphase thickness on the overall elastic and elastoplastic properties of a polymeric clay nanocomposite(PCN)using a functionally graded(FG)interphase is investigated in detail.The results of the computational homogenization on the mesoscopic level show that Young’s modulus variation of the interphase has a significant effect on the overall elastic response of nanocomposites in a higher clay weight ratio(Wt).Moreover,strength variation through the interphase has a notable effect on the elasto-plastic properties of PCNs.Also,the increase or decrease in stiffness of interphase from clay to matrix and vice versa have a similar effect in the overall behavior of nanocomposites.

关 键 词：Nylon 6/clay nanocomposites FG Interphase Computational homogenization 

分 类 号：TB332[一般工业技术—材料科学与工程]