三维四步编织复合材料单元胞体几何模型  

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

作　　者：陈作荣[1] 诸德超[1] 陆萌[1] 

机构地区：[1]北京航空航天大学飞行器设计与应用力学系

出　　处：《北京航空航天大学学报》2000年第5期539-542,共4页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家自然科学基金资助项目! ( 19932 0 30 )

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 。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.

关 键 词：复合材料 纺织 三维结构 纤维体积化 几何模型 

分 类 号：TB33[一般工业技术—材料科学与工程] TS101.2[轻工技术与工程—纺织工程]