复合材料科学与工程Issue(7)：44-56,13.DOI:10.19936/j.cnki.2096-8000.20260728.006
基于RVE模型的开孔层合板拉伸强度不确定性分析
Uncertainty analysis of tensile strength of open-hole laminates based on RVE modeling
摘要
Abstract
Aiming at the problem of dispersion of mechanical properties of open-hole laminates due to fiber and pore inhomogeneity during material preparation,this study develops an algorithm for generating a three-phase RVE model with randomly distributed fibers-substrate-pores,performs macro-and fine-scale progressive damage analyses of open-hole laminates,and solves for the sensitivities of the dimensions of the fibers and pores(Rf,Rv)and the vol-ume fractions(Vf,Vv)by using a polynomial chaos expansion method,to realize the uncertainty prediction of tensile strength of open-hole laminates.The analytical results show that under the combined effect of Vf decrease and Vv in-crease,the maximum decrease in the elastic performance parameters of the open pore plywood is 29.47%,and the ul-timate load decrease is 14.51%,which are significantly more than the corresponding maximum decreases caused by the changes of a single parameter(Vf or Vv)by 19.5%and 10.94%,respectively.For the failure displacements of open-hole laminates,the parameter influences were ranked as Vf>Rf>Vv>Rv;for the ultimate loads of open-hole laminates,the parameter influences were ranked as Vv>Vf>Rv>Rf.Which showed that the effects of the changes in volume fraction were greater than the effects of the changes in dimensions.关键词
开孔层合板/RVE模型/力学性能/混沌多项式展开/不确定性Key words
open-hole laminate/RVE modeling/mechanical properties/polynomial chaos expansion/uncer-tainty分类
通用工业技术引用本文复制引用
李恩情,刘兴龙,宋挺,卢翔..基于RVE模型的开孔层合板拉伸强度不确定性分析[J].复合材料科学与工程,2026,(7):44-56,13.基金项目
国家自然科学基金(U2433213) （U2433213）
