材料工程2016，Vol.44Issue(11)：107-113,7.DOI:10.11868/j.issn.1001-4381.2016.11.018
基于细观有限元方法的复合材料横向力学性能分析
Analysis of Composite Transverse Mechanical Properties Based on Micromechanical Finite Element Method
摘要
Abstract
Transverse fracture often occurs early in the loading history and is one of the key issues lim‐iting the composite structural design .However ,the mechanical behavior under transverse loading can not be represented by traditional micromechanical model w hich does not consider the influence of con‐stituent properties ,fiber volume fraction and fiber distribution .A new computational micromechanics finite element method ,which the microstructure was idealized as a random dispersion of parallel fibers embedded in the polymeric matrix using improved random sequence absorption algorithm ,was presen‐ted .The plasticity of matrix and interface decohesion of the composite were included in this model and the residual stress caused by the cooling of composite after the curing process was also taken into con‐sideration .The transverse tension ,compression and shear of composite were analyzed by the micro‐mechanical finite element method .Compared with the experiment results ,the prediction errors of transverse module were less than 7% ,and the transverse compression strength and shear strength were less than 8% .The results demonstrate that the method proposed here can be used to predict the composite transverse behavior .关键词
复合材料/细观有限元/残余应力/界面强度/横向力学性能Key words
composite/micromechanical finite element/residual stress/interface strength/transverse mechanical property分类
通用工业技术引用本文复制引用
刘万雷,常新龙,张晓军,张磊..基于细观有限元方法的复合材料横向力学性能分析[J].材料工程,2016,44(11):107-113,7.基金项目
国家自然科学基金项目 （）
