| 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 |
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| 引用本文： | 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,2009,32(2). |
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| 作者姓名： | 焦亚男 李嘉禄 魏丽梅 |
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| 作者单位： | 1. 天津工业大学复合材料研究所,天津市和教育部先进纺织复合材料重点实验室,天津300160
2. 珠海功控玻璃纤维有限公司,珠海,519020 |
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| 摘 要： | 通过分析损伤前后三维编织复合材料细观结构的变化,建立了剩余纱线长度的计算公式.对损伤前后三维编织复合材料试件进行了三点弯曲实验,分析了材料弯曲强度和弯曲弹性模量的变化规律和失效形式.主要讨论了2种编织角和4种损伤方案,包括沿宽度方向单边切割、沿宽度方向双边切割、沿厚度方向单边切割、沿宽度和厚度方向同时切割.实验结果表明,损伤前后的弯曲性能均随编织角的增大而减小;沿宽度方向切割对弯曲性能影响不明显,沿厚度方向切割对弯曲强度和模量影响较大,沿厚度和宽度同时切割的试件力学性能下降最大,接近60%.切割面受拉试件比切割面受压试件的弯曲性能降幅稍有增大.
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| 关 键 词： | 复合材料 三维编织 损伤形式 细观结构 弯曲性能 |
Influence of damage style on microstructure and flexure properties of three-dimensional braided composites |
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| JIAO Ya-nan,LI Jia-lu,WEI Li-mei.Influence of damage style on microstructure and flexure properties of three-dimensional braided composites[J].Journal of Solid Rocket Technology,2009,32(2). |
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| Authors: | JIAO Ya-nan LI Jia-lu WEI Li-mei |
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| Institution: | JIAO Ya-nan~1,LI Jia-lu~1,WEI U-mei~2 (1.Tianjin and MOE Key Laboratory of Advanced Composites,Composite Materials Research Institute,Tianjin Polytechnic University,Tianjin 300160,China,2.Zhuhai Gowin Fibreglass Co.Ltd.,Zhuhai 519020,China) |
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| Abstract: | Based on analyzing the change of microstructure models of 3-dimensional braided composites before and after damage, calculation equations of the remainder lengths of braider yams in the composites were established.Three-point bending tests were conducted on the 3D braided samples before and after damage.The varying rules of flexure properties and failure mechanism of materials were studied.Two kinds of braiding angle and four damage schemes including single-edge cut along the width direction, single-edge cu... |
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| Keywords: | composite 3-D braiding damage style microstructure flexure property |
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