北京航空航天大学学报 ›› 2000, Vol. 26 ›› Issue (5): 539-542.

• 论文 • 上一篇    下一篇

三维四步编织复合材料单元胞体几何模型

陈作荣, 诸德超, 陆萌   

  1. 北京航空航天大学 飞行器设计与应用力学系
  • 收稿日期:1999-04-06 出版日期:2000-05-31 发布日期:2010-09-27
  • 作者简介:陈作荣(1972-),男,四川资阳人,博士生,100083,北京.
  • 基金资助:

    国家自然科学基金资助项目(19932030)

Unit Cell Geometric Model of 4-Step 3-D Braided Composites

CHEN Zuo-rong, ZHU De-chao, LU Meng   

  1. Beijing University of Aeronautics and Astronautics,Dept. of Flight Vehicle Design and Applied Mechanics
  • Received:1999-04-06 Online:2000-05-31 Published:2010-09-27

摘要: 概述了三维四步(1×1)编织复合材料几何模型的研究进展,分析了三维四步正规编织过程中纤维束的运动路径及交织方式,提出了一种三维实体单元胞体几何模型,研究了三维编织复合材料单元胞体的几何性,并讨论了纤维束的挤压条件.和传统的几何模型比较,该模型体现了纤维束的连续性,使得各单元胞体之间合理地组装,保证了复合材料整体结构的完整性.

Abstract: After briefly reviewing the proceeding of geometric model of 4-step 3-D (1×1) rectangular braided composites, yarn path in 4-step rectangular braiding process is analyzed. On this basis, a 3-D solid unit cell geometric model is proposed, the characteristics of geometry of 3-D braided composites are studied and yarn-jamming condition is discussed. Compared with conventional geometric models, the identified geometric model reflects the continuity of yarn in 3-D braided composites, which makes each unit cell assembled reasonably, so the structural integrity of 3-D braided composites is assured. The 3-D solid geometric model makes it possible to correctly consider the interactions between yarn and matrix for analysis of effective mechanic behaviors of 3-D braided composites.

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