Structural effects of three-dimensional angle-interlock woven composite undergoing bending cyclic loading  

作　　者：JIN LiMin YAO Yao YU YiMin ROTICH Gideon SUN BaoZhong GU BoHong 

机构地区：[1]College of Textiles,Key Laboratory of High-performance Fibers & Products,Ministry of Education,Donghua University

出　　处：《Science China(Physics,Mechanics & Astronomy)》2014年第3期501-511,共11页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11072058 and 11272087);the Foundation for the Author of National Excellent Doctoral Dissertation of China(Grant No.201056);Shanghai Rising-Star Program(Grant No.11QH1400100);the Fundamental Research Funds for the Central Universities of China;Special Excellent Ph.D International Visit Program by Donghua University(Grant No.102552011003)

摘　　要：This paper reports the structural effects of three-dimensional(3-D)angle-interlock woven composite(3DAWC)undergoing three-point bending cyclic loading from experimental and finite element analysis(FEA)approaches.In experiment,the fatigue tests were conducted to measure the bending deflection and to observe the damage morphologies.By the FEA approach,a micro-structural unit-cell model of the 3DAWC was established at the yarn level to simulate the fatigue damage.The stress degradation at the loading condition of constant deformation amplitude was calculated to show the degradation of mechanical properties.In addition,the stress distribution,fatigue damage evolution and critical damage regions were also obtained to qualitatively reveal the structural effects and damage mechanisms of the 3DAWC subjected to three-point bending cyclic loading.This paper reports the structural effects of three-dimensional （3-D） angle-interlock woven composite （3DAWC） undergoing three-point bending cyclic loading from experimental and finite element analysis （FEA） approaches. In experiment, the fatigue tests were conducted to measure the bending deflection and to observe the damage morphologies. By the FEA approach, a mi- cro-structural unit-cell model of the 3DAWC was established at the yarn level to simulate the fatigue damage. The stress deg- radation at the loading condition of constant deformation amplitude was calculated to show the degradation of mechanical properties. In addition, the stress distribution, fatigue damage evolution and critical damage regions were also obtained to qual- itatively reveal the structural effects and damage mechanisms of the 3DAWC subjected to three-point bending cyclic loading.

关 键 词：three-dimensional angle-interlock woven composite （3DAWC） three-point bending fatigue microstructure model fi-nite element analysis （FEA） 

分 类 号：TB33[一般工业技术—材料科学与工程]