| 粘弹性树脂基三维编织复合材料的热膨胀性能研究 |
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| 引用本文： | 袁欣,孙慧玉.粘弹性树脂基三维编织复合材料的热膨胀性能研究[J].固体力学学报,2012,33(4):379-385. |
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| 作者姓名： | 袁欣 孙慧玉 |
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| 作者单位： | 1. 南京航空航天大学 航空宇航学院2. 南京航空航天大学 |
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| 基金项目： | 国家自然科学基金项目，教育部留学回国人员科研启动基金 |
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| 摘 要： | 首先利用均匀化理论并结合有限元法研究了三维编织复合材料的粘弹性效应，根据松弛模量的计算结果研究了材料热膨胀系数随时间的变化关系，在此基础上，给出了编织结构和工艺参数(编织角、纤维体积比)对材料初始热膨胀系数的影响规律，计算结果与实验值吻合较好。本文工作为深入研究三维编织复合材料的热粘弹性能提供了基础。
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| 关 键 词： | 三维编织复合材料 均匀化方法 有限元法 粘弹性效应 热膨胀系数 |
| 收稿时间： | 2011-05-23 |
STUDY ON THE THERMAL EXPANSION PROPERTIES OF VISCOELASTIC RESIN-BASED 3D BRAIDED COMPOSITES |
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| Xin Yuan
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Huiyu Sun.STUDY ON THE THERMAL EXPANSION PROPERTIES OF VISCOELASTIC RESIN-BASED 3D BRAIDED COMPOSITES[J].Acta Mechnica Solida Sinica,2012,33(4):379-385. |
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| Authors: | Xin Yuan Huiyu Sun |
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| Institution: | Xin Yuan Huiyu Sun(College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing,210016) |
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| Abstract: | First, the viscoelastic properties of 3D braided composites are obtained using the homogenization method and the FEM, and variation of thermal expansion coefficients with time is studied based on the numerical results of relaxation moduli of materials. The influence of braided structures and processing parameters (braided angles、fiber volume fractions) on initial thermal expansion coefficients is presented, and the numerical results agree well with the experimental data. The research work in the paper furnishes the basis for further investigating the thermo-viscoelastic properties of 3D braided composites. |
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