| 飞机柔性前起落架摆振仿真分析 |
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| 引用本文： | 常正,聂宏,冯飞,张明,冯彪.飞机柔性前起落架摆振仿真分析[J].航空工程进展,2011,2(4):432-436,484. |
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| 作者姓名： | 常正 聂宏 冯飞 张明 冯彪 |
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| 作者单位： | 1. 中国商用飞机有限责任公司上海飞机设计研究院,上海,200232
2. 南京航空航天大学航空宇航学院,南京,210016 |
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| 摘 要： | 前轮摆振是飞机地面动力学中的重点研究课题。基于多体动力学理论，采用有限元方法及点线吻合的方法处理缓冲器的柔性问题，建立了前起落架全柔性体摆振动力学模型，并采用起落架静力试验的结果对模型进行校验；给出了以飞机速度和防摆阻尼系数组成的飞机摆振稳定区域图；研究了轮胎的侧向刚度与转动间隙对临界防摆阻尼的影响。结果表明：采用点线...
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| 关 键 词： | 起落架 摆振 柔性模型 转动间隙 动力学 |
Shimmy Simulation Analysis of Aircraft Flexible Nose Landing Gear |
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| Chang Zheng,Nie Hong,Feng Fei,Zhang Ming,Feng Biao.Shimmy Simulation Analysis of Aircraft Flexible Nose Landing Gear[J].Advances in Aeronautical Science and Engineering,2011,2(4):432-436,484. |
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| Authors: | Chang Zheng Nie Hong Feng Fei Zhang Ming Feng Biao |
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| Institution: | 1.Shanghai Aircraft Design and Research Institute,Commerical Aircraft Corporation of China,Ltd.,Shanghai 200232,China) (2.College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China) |
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| Abstract: | Shimmy is a key subject of aircraft taxing dynamics. Based on multi-body dynamics theory, a flexible model of shimmy is developed by the means of FEM Method and point-curve coincidence, and verified with the data of static test. Figures of stable region are presented accordingly, formed by taxiing speed and critical anti- shimmy damping coefficient, to explore the effects of tire lateral stiffness and running clearance. The result shows that the method is effective to deal with flexible shock observer by means of point-curve coincidence. Critical damping coefficient decreases with taxing speed increasing when using the second anti-shimmy damping in the situation of the speed is higher than 10 m/s, and increases with tire lateral stiffness increasing, running clearance leads to sharp increase in critical damping coefficient. |
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| Keywords: | landing gear shimmy flexible model running clearance dynamics |
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