| 三维四向编织复合材料基本性能的有限元模拟 |
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| 引用本文： | 宛琼,李付国,梁宏,张李骊.三维四向编织复合材料基本性能的有限元模拟[J].航空材料学报,2005,25(1):30-35. |
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| 作者姓名： | 宛琼 李付国 梁宏 张李骊 |
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| 作者单位： | 西北工业大学,材料科学与工程学院,西安,710072;西北工业大学,材料科学与工程学院,西安,710072;西北工业大学,材料科学与工程学院,西安,710072;西北工业大学,材料科学与工程学院,西安,710072 |
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| 基金项目： | 航空基础科学基金(03H53048) |
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| 摘 要： | 依据三维四向编织复合材料的结构特点,建立了能真实反映其空间构型的"双纽线"单元体胞模型,并以此为基础,采用有限元方法对C／SiC三维四向编织复合材料的基本性能参数进行了数值模拟,获得了该材料在制备冷却阶段的热变形行为以及残余应力和残余应变的分布状况,同时获得了制备后室温条件下该材料的等效弹性模量与等效热膨胀系数值。
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| 关 键 词： | 三维四向编织 复合材料 "双纽线"体胞 有限元模拟 基本性能 |
| 文章编号： | 1005-5053(2005)01-0030-06 |
| 修稿时间： | 2003年11月11 |
Finite Element Simulation of Key Properties of Three-dimensional and Four-step Braided Composite |
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| WAN Qiong,LI Fu-guo,LIANG Hong,ZHANG Li-li.Finite Element Simulation of Key Properties of Three-dimensional and Four-step Braided Composite[J].Journal of Aeronautical Materials,2005,25(1):30-35. |
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| Authors: | WAN Qiong LI Fu-guo LIANG Hong ZHANG Li-li |
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| Abstract: | A "lemniscates" micro model is established according to the fabric of the three - dimensional and four-step braided composite . On the base of this model, the distribution of thermal stress and strain of the three-dimensional and four - step composite during the preparation process is analyzed by using FEM software. The effective elastic modulus and the effective thermal expansion coefficient of the three-dimensional and four-step composite at room temperature are simulated and compared with their analytic solution. These results provide an accurate simulation method and give reference to design, process and use this kind of composite. |
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| Keywords: | three-dimensional and four-step braided composite "lemniscates" micro model finite element simulation key properties |
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