Interference fitted metal-composite material flywheel rotor

TANG Ji-qiang1; 2; ZHANG Yong-bin1; ZHAO Li-bin3

doi:10.3788/OPE.20132110.2639

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Interference fitted metal-composite material flywheel rotor

更新时间：2020-08-12

- Interference fitted metal-composite material flywheel rotor
- Optics and Precision Engineering Vol. 21, Issue 10, Pages: 2639-2647(2013)
- 作者机构：
  
  1. 北京航空航天大学惯性技术重点实验室北京,100191
  2. 北京航空航天大学新型惯性仪表与导航技术国防重点学科实验室, 北京100191
  3. 北京航空航天大学宇航学院
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20132110.2639
  CLC： V249.1
- Received：11 March 2013，
  
  Revised：09 May 2013，
  
  Published Online：19 October 2012，
  
  Published：15 October 2013
- 稿件说明：
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汤继强张永斌赵丽滨. 过盈装配的金属轮毂-复合材料飞轮转子[J]. 光学精密工程, 2013,21(10): 2639-2647

TANG Ji-qiang ZHANG Yong-bin ZHAO Li-bin. Interference fitted metal-composite material flywheel rotor[J]. Editorial Office of Optics and Precision Engineering, 2013,21(10): 2639-2647
汤继强张永斌赵丽滨. 过盈装配的金属轮毂-复合材料飞轮转子[J]. 光学精密工程, 2013,21(10): 2639-2647 DOI： 10.3788/OPE.20132110.2639.

TANG Ji-qiang ZHANG Yong-bin ZHAO Li-bin. Interference fitted metal-composite material flywheel rotor[J]. Editorial Office of Optics and Precision Engineering, 2013,21(10): 2639-2647 DOI： 10.3788/OPE.20132110.2639.

摘要

针对一种高储能密度超导磁悬浮储能飞轮，设计了一种由磁轴承、金属轮毂和3个复合材料圆环过盈装配而成的飞轮转子。通过加入金属轮毂来改善转子的应力分布、减小转子的径向应力，保证转子在高速转动状态下磁轴承和复合材料圆环之间的连接强度。转子圆环之间通过过盈装配提供初始压应力，以避免转子在高速转动时发生分层破坏；采用平面应力解析法和有限元法建立转子的应力分析模型，研究了金属轮毂、复合材料圆环厚度和环间过盈量对转子应力分布和强度的影响。最后，提出了转子的优化设计方案。实验结果显示，转子的额定转速达到50 000 r/min，储能总量为1 110 Wh，储能密度达到40 Wh/kg。研究结果表明：加入金属轮毂、增大复合材料外环的厚度以及中环和外环的环间过盈量，可以提高转子的强度、极限转速和储能密度。

Abstract

To achieve high specific energy density

a carbon rotor without shaft consisting of a hollow hub and three composite cylindrical rings in interference fitted state is designed. The hollow hub made of high strength steel 18Ni350 is used to change the distribution of centrifugal stress

reduce the maximum radial stress and ensure the working gap of radial magnetic bearings be constant when the rotor rotates at a high speed. In order to find out the quantitative relationship among these factors such as the properties of high strength steel hollow hub

thickness ratio of rings

interference between rings and so on

a mathematical calculation model of the stress distribution is established by simplified stress model in plane case

and the mathematical calculation model is proved accurate by the finite element method. These results show that the strength distribution and ultimate speed of the rotor can be improved when the thickness of the outermost ring or the interference between the middle and the outermost ring increases. These results of this paper will give a useful hint for the design and optimization of the mental-composite flywheel rotor.

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references

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