| Timoshenko梁理论测定纤维增强复合材料动模量 |
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| 引用本文： | 黎大志,丁锡洪,顾慧芝.Timoshenko梁理论测定纤维增强复合材料动模量[J].南京航空航天大学学报,1989(3). |
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| 作者姓名： | 黎大志 丁锡洪 顾慧芝 |
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| 作者单位： | 南京航空学院飞机系
(黎大志，丁锡洪)，南京航空学院飞机系(顾慧芝) |
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| 摘 要： | 本文考虑剪切变形和转动惯量的影响,采用Timoshenko梁理论,推导了悬臂梁自由端具有集中质量情形下的特征方程,并对固支自由和自由自由两种支持下的碳/环氧单向层梁的动模量E_1和F_2进行了计算和比较。文中还讨论了不同长厚比以及高阶共振频率下的剪切变形及转动惯量的影响。
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| 关 键 词： | 复合材料力学 动力特性 特征方程 纤维增强复合材料 动模量 |
Determination of Dynamic Moduli of Fiber-Reinforced Composites with Timoshenko Beam Theory |
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| Li Dazhi Ding Xihong Gu Huizhi.Determination of Dynamic Moduli of Fiber-Reinforced Composites with Timoshenko Beam Theory[J].Journal of Nanjing University of Aeronautics & Astronautics,1989(3). |
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| Authors: | Li Dazhi Ding Xihong Gu Huizhi |
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| Institution: | Department of Aircraft Engineering |
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| Abstract: | Considering the effects of shear deformation and rotatory inertia, a new characteristic equation for a cantilever beam with a concentrated mass on its free end is derived in this paper with the aid of Timoshenko beam theory. Besides, the dynamic moduli E1 and E2 of carbon/epoxy unidirectional laminated beams with clamp-free and free-free boundary conditions are calculated and compared. The effects of shear deformation and rotatory inertia under various length-thickness ratios and higher vibration modes are also discussed. |
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| Keywords: | complex materials mechanics dynamic characteristics characteristic equation fiber-reinforced composites dynamic moduli |
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