介绍变截面三维编织预型件的减纱净形制备工艺,通过实验观察与理论建模相结合的方法,分析减纱对预型件细观结构的影响,对比整列减纱、行单元减纱与切削复合材料在变截面区域的弯曲性能。结果表明表面与内部减纱单元是减纱时的基本单位,保证编织规律不变是减纱工艺的基本原则;表面或内部单元减掉后分别会形成两组特殊的纱线轨迹,其中一组纱线的长度与编织角大小较不减纱时增大,而另一组纱线只改变编织角的方向;行单元减纱与整列减纱复合材料的弯曲性能均明显优于切削试件,且行单元减纱试件的弯曲性能比整列减纱试件略高。
Yarn-reduction technique was introduced for the net-shape preparation of tapered 3D braided preforms.The architectures of preforms were first investigated in different yarn-reduction manners by experimental observation and theoretical modeling.Bending performance in the tapered region of the column yarn-reduction composites,row unit yarn-reduction composites and cut composites were compared.The results show that surface or interior yarn-reduction unit is the basic yarn element to be removed and the braiding rules should be undisturbed after yarn-reduction.Two groups of special yarn trajectories are formed corresponding to the removals of a surface and an interior reduction units,respectively.In one group,the length and orientation degree increase relative to non-yarn-reduction,while in other group,found is only the change of the orientation directions.The row unit yarn-reduction composites have slightly better bending performance than the column yarn-reduction composites,while both of them have their bending performances significantly higher than those of the cut composites.
参考文献
| [1] | Chou T W;Ko F K.Textile structural composites[M].Amsterdam:Elsevier Science,1989:22-26. |
| [2] | 陶肖明;冼杏娟;高冠勋.纺织结构复合材料[M].北京:科学出版社,2001:3-9. |
| [3] | A. P. Mouritz;M. K. Bannister;P. J. Falzon;K. H. Leong .Review of applications for advanced three-dimensional fibre textile composites[J].Composites, Part A. Applied science and manufacturing,1999(12):1445-1461. |
| [4] | 陈绍杰;梁晶红.三维编织结构复合材料的发展与应用[J].航空制造工程,1994(04):33-35. |
| [5] | Emile Greenhalgh;Matthew Hiley .The assessment of novel materials and processes for the impact tolerant design of stiffened composite aerospace structures[J].Composites, Part A. Applied science and manufacturing,2003(2):151-161. |
| [6] | Chuan Gao;Yizao Wan;Tao Yan;Kaijing Ren;Xiaolei Li;Fan Wang;Honglin Luo;Qing Guo .Three-dimensional braided fabrics-reinforced composites for load-bearing orthopedic applications - Part I: mechanical performance[J].International Journal of Materials Research,2011(3):309-316. |
| [7] | Dmitri Mungalov;Patrick Duke;Alexander Bogdanovich .High Performance 3-D Braided Fiber Preforms: Design and Manufacturing Advancements for Complex Composite Structures[J].SAMPE Journal,2007(6):53-60. |
| [8] | Dmitri Mungalov;Alexander Bogdanovich .Complex Shape 3-D Braided Composite Preforms: Structural Shapes for Marine and Aerospace[J].SAMPE Journal,2004(3):7-21. |
| [9] | 肖丽华;李嘉禄 .异型整体结构复合材料预成型件的编织技术[J].产业用纺织品,1994,12(04):25-27. |
| [10] | 钟智丽;苏大伟.编织结构复合材料的编织原理[J].天津纺织科技,1995(01):7-9. |
| [11] | 肖丽华;李嘉禄.三维编织结构复合材料的编织设计[J].宇航材料工艺,1994(02):22-25. |
| [12] | 焦亚男,李嘉禄,魏丽梅.损伤形式对三维编织复合材料细观结构和弯曲性能的影响[J].固体火箭技术,2009(02):214-217,225. |
| [13] | Li J L;Jiao Y N;Sun Y;Wei L M .Experimental investigation of cut-edge effect on mechanical properties of three-dimensional braided composites[J].Materials & Design,2007,28(09):2417-2424. |
| [14] | 焦亚男,李嘉禄,魏丽梅,孙颖.损伤形式对三维编织复合材料拉压性能的影响[J].复合材料学报,2006(06):52-56. |
| [15] | Li W;Hammad M;EIshiekh A .Structural analysis of 3-D braided performs for composites Part I:the 4-step performs[J].Journal of the Textile Institute,1990,81(04):491-514. |
| [16] | Kostar TD.;Chou TW. .A methodology for Cartesian braiding of three-dimensional shapes and special structures[J].Journal of Materials Science,2002(13):2811-2824. |
| [17] | 焦亚男,李嘉禄.异制件用三维编织复合材料的拉伸性能[J].纺织学报,2006(09):1-4. |
| [18] | GB/T 1449-2005.纤维增强塑料弯曲性能试验方法[S]. |
| [19] | L. Chen;X.M. Tao .On the microstructure of three-dimensional braided preforms[J].Composites science and technology,1999(3):391-404. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%