Research of Deformation Behavior and Elastic Properties of SiO/SiOComposite

LIU Xiaoyu; LI Zhe; ZHAI Fenlou

doi:10.16080/j.issn1671-833x.2018.09.092

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Research of Deformation Behavior and Elastic Properties of SiO/SiOComposite

更新时间：2025-10-30

- Research of Deformation Behavior and Elastic Properties of SiO/SiOComposite
- Aeronautical Manufacturing Technology Vol. 61, Issue 9, Pages: 92-95(2018)
- 作者机构：
  
  北京市计算中心，“互联网+”智能装备云服务技术北京市工程实验室,北京,100094
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.2018.09.092
  CLC：
- Published：2018
- 稿件说明：
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刘晓宇，李哲，翟奋楼. SiO2f/SiO2织物复合材料变形及弹性常数研究[J]. 航空制造技术, 2018, 61(9): 92-95.

LIU Xiaoyu, LI Zhe, ZHAI Fenlou. Research of Deformation Behavior and Elastic Properties of SiO2f/SiO2 Composite[J]. Aeronautical Manufacturing Technology, 2018, 61(9): 92-95.
刘晓宇，李哲，翟奋楼. SiO2f/SiO2织物复合材料变形及弹性常数研究[J]. 航空制造技术, 2018, 61(9): 92-95. DOI： 10.16080/j.issn1671-833x.2018.09.092.

LIU Xiaoyu, LI Zhe, ZHAI Fenlou. Research of Deformation Behavior and Elastic Properties of SiO2f/SiO2 Composite[J]. Aeronautical Manufacturing Technology, 2018, 61(9): 92-95. DOI： 10.16080/j.issn1671-833x.2018.09.092.

摘要

以溶胶- 凝胶法制备的层状SiO

/SiO

织物复合材料为研究对象，采用试验和数值方法研究了材料的变形机制和弹性常数。首先，采用试验方法测量了材料沿纤维方向的弹性模量；其次，采用代表性体积单元法建立材料的胞元模型，并基于周期性边界条件，得到材料的等效杨氏模量，与通试验结果相比较，验证有限元模型的可靠性；最后，通过有限元方法分析胞元在不同拉伸载荷、剪切载荷作用下的变形，从而得到材料的等效拉伸模量、剪切模量和泊松比共9个弹性常数。研究表明：基于周期性边界条件的代表性体积单元法解决了胞元变形不协调问题，可用于预测材料的弹性常数模量，分析结果与试验测试结果相吻合，能够正确反映SiO

/SiO

复合材料的力学行为。研究结果可为材料的结构设计和优化提供参考。

Abstract

Experimental and numerical methods were employed to study deformation mechanism and elastic properties of the plain woven SiO

/SiO

composite which was prepared by conventional sol-gel process. Firstly

the elastic modulus along the fiber direction was measured experimentally; Secondly

the representative volume element (RVE) method was used to set up the cell model in ABAQUS software. Equivalent elastic modulus of the material was obtained based on periodical boundary condition

and was compared with experiment data to verify the reliability of numerical method. Finally

the nine equivalent elastic constants of SiO

/SiO

composites were calculated based on FE

M analysis results

including Young’s modulus

shear modulus and Poisson ratio. The conclusions can be drawn that the RVE method based on boundary condition can solve the deformation compatibility of RVE method

and be used to predict the elastic property of material and deformation behavior. The prediction equivalent elastic constants agree with the test result and can contribute to structure design and optimization of the advanced SiO2f/SiO2 composites.

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