三维五向编织复合材料的弹性性能

卢子兴; 刘子仙

三维五向编织复合材料的弹性性能

北京航空航天大学航空科学与工程学院, 北京 100083

基金项目: 航空科学基金资助项目(04B51045)

详细信息

作者简介:
卢子兴(1960-),男,河北枣强人,教授, luzixing@263.net.

中图分类号: TB 332; TB 330.1
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- 被引次数: 0
出版历程
- 收稿日期: 2005-01-31
- 网络出版日期: 2006-04-30

Elastic properties for 3 dimensional and 5 directional braided composites

School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 根据实际编织工艺和编织预制件的细观结构模型,利用刚度等效的思想,导出了三维五向编织复合材料的刚度矩阵并计算了其弹性常数.在此基础上,对比分析了三维五向和三维四向编织复合材料的弹性常数随编织角及纤维体积分数的变化规律,讨论了编织预制件的截面尺寸对三维五向编织复合材料弹性常数的影响.结果表明,三维五向编织复合材料在保持三维四向编织复合材料良好性能的同时对纵向力学性能进行了增强;编织预制件的截面尺寸只在较小的情况下才对编织复合材料的弹性常数影响较大.
- 编织复合材料 /
- 三维五向 /
- 弹性性能 /
- 刚度等效
Abstract: According to actual braiding process and the micro-structural model of braiding preform, using stiffness averaging method, the stiffness matrix of 3D&5D(3 dimensional and 5 directional) braided composites is deduced and their elastic properties are calculated. On the basis of calculation,the changing characteristics of elastic constants with the braided angle and volume fraction of fibers is described and the difference of elastic properties between 3D&5D and 3D&4D(3 dimensional and 4 directional) braided composites as well as the effect of cross-section size of performs are discussed. Numerical calculation showsthat 3D&5D braided composites not only keep the certain merits of 3D&4D braided composites but also enhance the mechanical properties of axial direction or braided direction. The effect of cross-section size of braiding preform on the elastic properties of braided composites is larger only if the cross-section size is smaller.
- braided composites /
- 3D&5D braiding /
- elastic properties /
- stiffness averaging

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参考文献(1)

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