EFFECT OF RANDOM FIBER DISTRIBUTION ON LONGITUDINAL COMPRESSIVE BEHAVIOR OF COMPOSITE MATERIALS

ZHANG Li; XU Dong; ZHANG ShuFeng; JIANG YuanXiang

doi:10.16579/j.issn.1001.9669.2018.04.019

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EFFECT OF RANDOM FIBER DISTRIBUTION ON LONGITUDINAL COMPRESSIVE BEHAVIOR OF COMPOSITE MATERIALS

更新时间：2022-09-22

- EFFECT OF RANDOM FIBER DISTRIBUTION ON LONGITUDINAL COMPRESSIVE BEHAVIOR OF COMPOSITE MATERIALS
- Journal of Mechanical Strength Vol. 40, Issue 4, Pages: 875-881(2018)
- 作者机构：
  
  1. 国防科技大学装备综合保障技术重点实验室
  2. 海军装备研究院舰船所
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2018.04.019
  CLC：
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ZHANG Li, XU Dong, ZHANG ShuFeng, et al. EFFECT OF RANDOM FIBER DISTRIBUTION ON LONGITUDINAL COMPRESSIVE BEHAVIOR OF COMPOSITE MATERIALS. [J]. 40(4):875-881(2018)
DOI：

ZHANG Li, XU Dong, ZHANG ShuFeng, et al. EFFECT OF RANDOM FIBER DISTRIBUTION ON LONGITUDINAL COMPRESSIVE BEHAVIOR OF COMPOSITE MATERIALS. [J]. 40(4):875-881(2018) DOI： 10.16579/j.issn.1001.9669.2018.04.019.

摘要

在纤维增强复合材料中,纤维的随机分布可能会引起复合材料纵向压缩特性的分散性。为模拟纤维在复合材料横截面上的随机分布,提出了一种新的纤维随机分布生成算法——拉丁超立方随机序列膨胀法(Latin Hypercube Sampling based on Random Sequential Expansion,LHS-RSE),可高效模拟纤维增强复合材料中横截面上高达70%纤维体积比的随机分布。基于Abaqus/Standard建立了单向纤维增强环氧树脂基复合材料T300/914的三维有限元模型,研究了纤维随机分布对复合材料纵向压缩特性的影响。研究结果表明,纤维在横截面的随机分布会明显降低复合材料的纵向压缩强度,并且引起的复合材料纵向压缩强度随机变化,其随机性近似为正态分布或对数正态分布。

Abstract

Random fiber distribution may lead to randomness of longitudinal compressive behavior of fiber reinforced plastics（FRP）.To mimic random fiber distribution over the cross-section,a new algorithm named Latin Hypercube Sampling based on Random Sequential Expansion（LHS-RSE） is proposed,which can simulate the random fiber distribution of FRP with fiber volume ratio as high as 70%.Then,3 D FE model with random fiber distribution of unidirectional fiber reinforced plastic T300/914 is developed in Abaqus/Standard to investigate the influence of random fiber distribution on the compressive behavior.It is shown that random fiber distribution over cross section greatly compromises the longitudinal compressive strength of FRP.Random distribution of longitudinal compressive strength resulted by random fiber distribution tends to follow normal or lognormal distribution.

关键词

复合材料有限元纤维随机分布压缩强度拉丁超立方抽样

Keywords

FRPFinite elementRandom fiber distributionCompressive strengthLatin hypercube sampling

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