三维全五向编织预制件渗透率研究

doi:10.7527/S1000-6893.2014.0328

固体力学与飞行器总体设计

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三维全五向编织预制件渗透率研究

刘振国, 欧家骏, 胡龙, 王一博, 黄祥

北京航空航天大学航空科学与工程学院, 北京 100191

收稿日期:2014-09-12 修回日期:2014-11-28 出版日期:2015-07-15 发布日期:2014-12-17
通讯作者: 刘振国男, 博士, 教授。 Tel: 010-51735005 E-mail: liuzg@buaa.edu.cn E-mail:liuzg@buaa.edu.cn
作者简介:欧家骏男, 硕士研究生。主要研究方向: 先进三维编织复合材料工艺、性能及结构优化。 Tel: 010-82338049 E-mail: oujiajun9042@163.com;胡龙男, 博士研究生。主要研究方向: 先进三维编织复合材料工艺、性能及结构优化, 复合材料细观力学。 Tel: 010-82338049 E-mail: hulong0754@gmail.com; 王一博男, 博士研究生。主要研究方向: 先进三维编织复合材料工艺、性能及结构优化。 Tel: 010-82338049 E-mail: wangyibo1111@163.com;黄祥男, 硕士研究生。主要研究方向: 先进三维编织复合材料工艺、性能及结构优化。 Tel: 010-82338049 E-mail: huangxiang314@qq.com

Research on permeability of 3D full five-directional braided preforms

LIU Zhenguo, OU Jiajun, HU Long, WANG Yibo, HUANG Xiang

School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China

Received:2014-09-12 Revised:2014-11-28 Online:2015-07-15 Published:2014-12-17

摘要/Abstract

摘要：

为了获得三维全五向编织预制件的渗透率数据,并研究其随编织工艺参数变化的规律,基于三维全五向编织复合材料内部单胞细观结构和编织预制件孔隙的双尺度特点,建立了用于进行编织预制件渗透率仿真计算的模型。施加周期性边界条件,利用Fluent的两相流模型,对三维全五向编织预制件沿轴向和垂向的树脂填充过程进行仿真计算,获得了不同编织角下预制件的轴向和垂向的非饱和渗透率。同时利用径向法实验对不同编织角的三维全五向编织预制件的渗透率进行了测量。将实验结果与仿真计算结果进行对比,两者的渗透率随编织角变化趋势一致,实验值与计算值吻合较好。

关键词: 复合材料, 三维编织, 渗透率, 树脂传递模塑, 径向法

Abstract:

In order to obtain the permeability of 3D full five-directional braided preforms and study the law of its change with processing parameters, based on the micro-structure of the 3D full five-directional braided composites' inner unit cell and the double scale characteristics of braided preform porosity, a model for calculating the permeability of 3D full five-directional braided preforms is established in this paper.By applying periodic boundary condition, the axial and vertical filling processes of 3D full five-directional braided preforms are simulated using the two-phase model in Fluent, and the axial and vertical unsaturated permeability of the preforms with different braiding angles is obtained.At the same time, the permeability of 3D full five-directional braided preforms is measured by radial flow techniques.The experimental results are compared with the simulation results, both of which have the same trends with the change of braiding angles, and the experimental and calculated values are in good agreement.

Key words: composite, 3D braiding, permeability, resin transfer molding, radial flow techniques

中图分类号:

V254.2
TB332

刘振国, 欧家骏, 胡龙, 王一博, 黄祥. 三维全五向编织预制件渗透率研究[J]. 航空学报, 2015, 36(7): 2244-2250.

LIU Zhenguo, OU Jiajun, HU Long, WANG Yibo, HUANG Xiang. Research on permeability of 3D full five-directional braided preforms[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(7): 2244-2250.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

三维全五向编织预制件渗透率研究

Research on permeability of 3D full five-directional braided preforms

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