| 阻尼器切向接触刚度的有限元分析及应用 |
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| 引用本文： | 史亚杰,朱梓根.阻尼器切向接触刚度的有限元分析及应用[J].航空动力学报,2009,24(6):1292-1298. |
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| 作者姓名： | 史亚杰 朱梓根 |
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| 作者单位： | 1. 中国民用航空总局,航空安全技术中心,航空安全研究所,北京,100028
2. 北京航空航天大学,能源与动力工程学院,北京,100191 |
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| 摘 要： | 提出了一种利用有限单元法求解干摩擦阻尼器接触刚度的方法.利用该方法研究了接触面初始正压力、摩擦系数、阻尼器材料属性和阻尼器接触面半径等对接触刚度的影响规律,发现接触刚度随着这些参数的增大而变大.并通过曲线拟合得到了一定条件下接触刚度随接触面正压力变化的函数关系,为求解带阻尼器叶片非线性响应时实时准确考虑接触刚度随正压力的变化提供了方便.最后,利用所得刚度函数研究了接触刚度对带凸肩叶片非线性振动响应的影响,结果表明:随着接触刚度的增加,叶片峰值频率逐渐升高,振动峰值逐渐减小,且各自都逐渐趋于一个定值.
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| 关 键 词： | contact stiffness finite element（FE） dry friction damping blade |
| 收稿时间： | 2008/4/22 0:00:00 |
| 修稿时间： | 2008/11/20 0:00:00 |
Finite element analysis and application of friction damper tangential contact stiffness |
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| SHI Ya-jie and ZHU Zi-gen.Finite element analysis and application of friction damper tangential contact stiffness[J].Journal of Aerospace Power,2009,24(6):1292-1298. |
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| Authors: | SHI Ya-jie and ZHU Zi-gen |
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| Institution: | 1.Aviation Safety Technology Research Institute;Center of Aviation Safety Technology;Civil Avivation Administration of China;Beijing 100028;China;2.School of Jet Propulsion;Beijing University of Aeronautics and Astronautics;Beijing 100191;China |
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| Abstract: | A convenient method was developed to estimate the tangential contact stiffness between dry friction dampers using the general finite element method(FEM) software.The influences of various parameters such as normal preload,friction coefficient,damper material properties and the radius of the cylinder damper etc on the contact stiffness were investigated in detail.The results show that,the contact stiffness improves with increase in these parameters.A formula of calculating the tangential contact stiffness fo... |
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| Keywords: | contact stiffness finite element(FE) dry friction damping blade |
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