轮体结构颗粒阻尼器设计方法

刘彬; 王延荣; 田爱梅; 唐伟; 冯欢欢

doi:10.13224/j.cnki.jasp.2014.10.027

轮体结构颗粒阻尼器设计方法

doi: 10.13224/j.cnki.jasp.2014.10.027

刘彬^1,2,
王延荣^1,2,
田爱梅³,
唐伟⁴,
冯欢欢^1,2

1. 北京航空航天大学能源与动力工程学院, 北京 100191;
2. 先进航空发动机协同创新中心, 北京 100191;
3. 北京航空航天大学宇航学院, 北京 100191;
4. 中国航空工业集团公司航空综合技术研究所, 北京 100028

基金项目:

国家自然科学基金（51475022）

详细信息

作者简介:
刘彬（1986- ），男，山西太原人，博士生，主要从事航空发动机结构强度，振动及可靠性研究.

中图分类号: V231.92
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出版历程
- 收稿日期: 2013-07-04
- 刊出日期: 2014-10-28

Design methodology for particle dampers applied to a wheel structure

1. School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. Collaborative Innovation Center for Advanced Aero-Engine, Beijing 100191, China;
3. School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
4. Aero-Polytechnology Establishment, Aviation Industry Corporation of China, Beijing 100028, China

摘要

摘要: 利用离散元法及正交设计方法，对典型轮体结构发生伞形振动时的二维等效振动模型进行了空腔尺寸及颗粒填充方案的数值设计，并结合振动试验结果给出了轮体结构颗粒阻尼器的设计流程及设计准则.研究表明：①建立的二维等效振动模型在能够反映轮体结构伞形振动基本特征的同时，也可以较为准确地模拟内部颗粒运动对结构产生的影响；②颗粒阻尼对轮体结构的振动有明显的改善作用，但填充不同材质的颗粒，其减振效果会有较为明显的区别；③空腔的尺寸及颗粒的质量率对颗粒阻尼的影响显著，应首先保证的是较高的颗粒质量率；④由于碰撞间隙的作用，对于固定规格的空腔和颗粒，存在最佳颗粒体积填充率使得颗粒阻尼的减振效果最佳.由试验与数值模拟的最佳方案的一致性可知，发展的设计方法可以较为准确地给出轮体结构颗粒阻尼器的最优空腔尺寸及其对应的最佳填充方法，可用于轮体结构伞形振动减振方案的前期设计.
- 轮体结构 /
- 伞形振动 /
- 离散元法 /
- 颗粒阻尼 /
- 质量率 /
- 填充率 /
- 正交模拟试验
Abstract: By use of a discrete element method (DEM), the design methodology for cavity size and filling schemes of particle dampers applied to a wheel structure was investigated through a series of orthogonal simulation tests. A two-dimensional equivalent vibration model of a typical wheel was established, in which the configuration was evaluated based on the specific parameters when it vibrated in the umbrella-shaped mode. On the basis of experimental tests and analytical study, conclusions can be drawn as follow: (1) with the capability of describing the umbrella-shaped vibration of the wheel structure, the two-dimensional equivalent model is effective to reflect the influences on the cavity caused by interior particles' motion; (2) a dramatic increase in the attenuation due to the presence of particles is clearly evident while it differs in particle types; (3) the damping performance is significantly affected by the cavity size and particle mass ratio, moreover, the latter should be guaranteed first; (4) enough clearance between particles and wall of cavity is also required, so there is an optimal filling rate for an immutable enclosure, fixed particle size and type. Given the fact that the design scheme agrees well with the optimal case given by experimental tests, the design methodology can be used to acquire the optimal cavity size and filling scheme at the design stage of a wheel structure.
- wheel structure /
- umbrella-shaped vibration /
- discrete element method(DEM) /
- particle damping /
- mass ratio /
- filling rate /
- orthogonal simulation tests

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