Mechanical Properties of a Wood Flour-PET Composite Through Computational Homogenisation  

作　　者：P.Pesante K.Saavedra G.Pincheira 

机构地区：[1]M.Sc.in Mechanical Engineering,Faculty of Engineering,Universidad de Talca Campus,Curicó,Chile [2]Department of Industrial Technologies,Faculty of Engineering,Universidad de Talca Campus,Curicó,Chile

出　　处：《Computers, Materials & Continua》2021年第6期4061-4079,共19页计算机、材料和连续体（英文）

基　　金：support from the Chilean Regional Government of Maule through the FIC-R project“Valorization of recycled waste through the creation of new materials for the manufacture of marketable products”,code BIP 30.481.945。

摘　　要：This work proposes to study the effective elastic properties(EEP)of a wood-plastic composite(WPC)made from polyethylene terephthalate(PET)and Chilean Radiate pine’s wood our,using nite element simulations of a representative volume element(RVE)with periodic boundary conditions.Simulations are validated through a static 3-point bending test,with specimens obtained by extruding and injection.The effect of different weight fractions,space orientations and sizes of particles are here examined.Numerical predictions are empirically conrmed in the sense that composites with more wood our content and bigger size,have higher elastic modulus.However,these results are very sensitive to the orientation of particles.Voigt and Reuss mean-eld homogenisation approaches are also given as upper and lower limits.Experimental tests evidence that exural strengths and ultimate tensile elongations decrease respect to 100%PET,but these properties can be enhanced considering particle-size distributions instead of a xed size of wood our.

关 键 词：Wood-plastic composite periodic homogenisation mechanical properties experimental validation 

分 类 号：TB3[一般工业技术—材料科学与工程]