南京工业大学学报（自然科学版）2011，Vol.33Issue(2)：85-88,4.DOI:10.3969/j.issn.1671-7627.2011.02.019
单向短纤维增强复合材料纵向弹性模量预测
Prediction of longitudinal elastic modulus of unidirectional short-fiber-reinforced composites
摘要
Abstract
A two-cylinder micromechanical model consisting of single fiber and matrix for fiber-reinforced composites was established.The equations for calculating fiber axial stress and length influence factor of short fiber λ were derived by Lame expression of shear stress in the matrix.The formula for predicting longitudinal elastic modulus of the short-fiber-reinforced composite was obtained based on the length influence factor and the mixing rule.The effect of micro-structure parameters, such as fiber aspect ratio and volume fraction on the longitudinal elastic modulus of the composite was investigated.Furthermore, the predicted longitudinal elastic modulus of the composite were compared with the results calculated by Halpin-Tsai and Darlnigton equations experimental data.Result showed that the obtained foumula was better than exqerimental data.关键词
短纤维复合材料/纵向弹性模量/应力传递/细观力学Key words
short-fiber-reinforced composite/ longitudinal elastic modulus/ stress transfer/ micromechanics分类
通用工业技术引用本文复制引用
孙开俊,顾伯勤,周剑锋,黄星路..单向短纤维增强复合材料纵向弹性模量预测[J].南京工业大学学报（自然科学版）,2011,33(2):85-88,4.基金项目
国家自然科学基金资助项目(10872088) （10872088）
教育部博士点基金资助项目(20070291004) （20070291004）
南京工业大学学科建设基金资助项目(39702010) （39702010）
