栅板密封对流道侧壁变形的随动模型

doi:10.3901/JME.2020.23.239

摘要/Abstract

摘要： 针对可变流道栅板密封，以外凸变形的流道侧壁为边界条件，建立了栅板密封在弹性元件预紧力作用下适应流道侧壁变形的理论分析模型。基于合理假设，通过分析桥接元件和栅板工作状态，指出栅板密封存在泄漏间隙和悬浮间隙；提出了工作状态下栅板密封间隙大小及分布的计算方法，为研究栅板密封流固热耦合问题提供了几何边界条件；分析了栅板厚度、桥接元件刚度和弹簧参数等对栅板密封随动效果的影响，指出泄漏间隙随栅板厚度减小而单调减小，悬浮间隙随桥接元件弹性模量和截面惯性矩减小而减小，并随弹簧刚度或数量的增加而线性减小。

关键词: 栅板密封, 变形, 随动模型, 间隙

Abstract: Aimed at wafer seal developed for removable engine panel and restricted with distorted engine panel condition, theoretical servo model under spring force is established in consideration of real panel distortion. Based on reasonable assumption, working conditions of bridge element and wafers are analyzed, the exist of leakage gap and suspension gap is proved. The computing method of size and distribution of wafer seal gap are obtained under working conditions mentioned above, geometry boundary conditions can be provided to fluid-thermal-solid interaction research of wafer seal. Influence factors of wafer seal servo effect, such as thickness of wafers, stiffness of the bridge element and parameters of springs are discussed, it is pointed out that leakage gap decreases monotonically with the decrease of the thickness of wafer, the suspension gap decreases with the decrease with the elastic modulus and the moment of inertia of the section, and decreases linearly with the increase of the stiffness and number of springs.

Key words: wafer seal, distortion, servo model, gap

中图分类号:

TK49

李鸿举, 刘莹, 黄伟峰, 李国志, 米洁, 赖汉荣. 栅板密封对流道侧壁变形的随动模型[J]. 机械工程学报, 2020, 56(23): 239-248.

LI Hongju, LIU Ying, HUANG Weifeng, LI Guozhi, MI Jie, LAI Hanrong. Wafer Seal Servo Model under Distorted Engine Panel[J]. Journal of Mechanical Engineering, 2020, 56(23): 239-248.

参考文献

[1] 姜鹏,匡宇,谢小平,等.国外高超声速飞行器研究现状及发展趋势[J].飞航导弹,2018(7):19-24. JIANG Peng, KUANG Yu,XIE Xiaoping,et al. Research status and development trend of hypersonic vehicle abroad[J]. Aerodynamic Missile Journal,2018(7):19-24.
[2] 廖龙文,曾鹏,陈军燕,等.高超声速飞行器发展困境分析[J].飞航导弹,2019(12):22-27. LIAO Longwen,ZENG Peng,CHEN Junyan,et al. Analysis of development dilemma of hypersonic vehicle[J]. Aerodynamic Missile Journal,2019(12):22-27.
[3] 刘晓伟,李永洲,张蒙正,等. RBCC进气道双流道变几何方案研究[J].航空动力学报,2016,31(11):2659-2664. LIU Xiaowei,LI Yongzhou,ZHANG Mengzheng,et al. Investigation of variable geometry RBCC inlet with double passage[J]. Journal of Aerospace Power,2016,31(11):2659-2664.
[4] 郭荣荣,金志光,李猛,等.二元外并联RBCC进气道变几何方案研究[J].推进技术,2017,38(3):481-488. GUO Rongrong,JIN Zhiguang,LI Meng,et al. Investigation of a 2D variable geometry over/under type inlet for RBCC[J]. Journal of Propulsion Technology,2017,38(3):481-488.
[5] PATRICK H D,BRUCE S,JEFFREY J D. Further investigations of hypersonic engine seals[R]. NASA/TM-2004-213188,AIAA-2004-3887,August 2004.
[6] JEFFREY J D,PATRICK H D,BRUCE M,et al. An evaluation of high temperature airframe seals for advanced hypersonic vehicles[R]. NASA/TM-2007-215043,AIAA-2007-5743,October 2007.
[7] BRUCE M S. Evaluation of an innovative high temperature ceramic wafer seal for hypersonic engine applications[R]. NASA Technical Memorandum 105556,February,1992.
[8] JEFFREY H M,BRUCE M S,PAUL J,et al. Hot dynamic test rig for measuring hypersonic engine seal flowand durability[R]. NASA Technical Memorandum 106507,February 1994.
[9] Dunlap P H,DeMange J J,Steinetz B M. Performance evaluations of ceramic wafer seals[R]. NASA/TM-2006-214416,AIAA-2006-4934,November 2006.
[10] PATRICK H D,JEFFREY J DeMange,BRUCE S. Design study of wafer seals for future hypersonic vehicles[R]. NASA/TM-2005-213858,AIAA-2005-4153,October 2005.
[11] 彭祖军.高温动密封结构设计与分析[D].哈尔滨:哈尔滨工业大学,2011. PENG Zujun. Structure design and analysis of high temperature dynamic seal[D]. Harbin:Harbin Institute of Technology,2011.
[12] 张婕,蒋军亮,任青梅,等.美国高温密封试验技术研究[J].液压气动与密封,2015,35(10):7-9. ZHANG Jie,JIANG Junliang,REN Qingmei,et al. The review of test technology for the american high temperature structural seals[J]. Hydraulics Pneumatics& Seals,2015,35(10):7-9.
[13] 薛俊川.高超声速飞行器陶瓷栅板式密封设计研究[J].飞机设计,2016,36(2):48-52. XUE Junchuan. Research of ceramic wafer seals for hypersonic vehicles[J]. Aircraft Design,2016,36(2):48-52.
[14] 王立研,王菁华,杨炳尉.高超声速飞行器控制面动密封技术[J].宇航材料工艺,2016,46(3):1-6. WANG Liyan,WANG Jinghua,YANG Bingwei. Dynamic seal technology for control surface of hypersonic vehicles[J]. Aerospace Materials& Technology,2016,46(3):1-6.
[15] 李凡,王树浩,陈江涛,等.飞行器典型热密封结构[J].宇航材料工艺,2013,43(1):20-25. LI Fan,WANG Shuhao,CHEN Jiangtao,et al. Typical high-temperature seal structure of reusable and hypersonic vehicles[J]. Aerospace Materials& Technology,2013,43(1):20-25.
[16] 张立同,成来飞,徐永东.新型碳化硅陶瓷基复合材料的研究进展[J].航空制造技术,2003(1):24-32. ZHANG Litong,CHENG Laifei,XU Yongdong. Progress in research work of new CMC-SiC[J]. Aeronautical Manufacturing Technology,2003(1):24-32.
[17] 金华,孟松鹤,解维华,等.超高温陶瓷复合材料抗热冲击性能影响因素的实验研究[J].固体火箭技术,2013,36(2):255-260. JIN Hua,MENG Songhe,XIE Weihua,et al. Experimental study on the influence factors of thermal shock resistance of ultra-high temperature ceramic composite materials[J]. Journal of Solid Rocket Technology,2013,36(2):255-260.
[18] 周印佳,孟松鹤,解维华,等.高温氧化对超高温陶瓷材料耦合传热的影响[J].复合材料学报,2016,33(5):1079-1085. ZHOU Yinjia,MENG Songhe,XIE Weihua,et al. Effects of oxidation on coupled heat transfer of ultra-high temperature ceramic materials at high temperature[J]. Acta Materiae Compositae Sinica,2016,33(5):1079-1086.
[19] 曹建国,张勤俭.碳化硅陶瓷超声振动辅助磨削材料去除特性研究[J].机械工程学报,2019,55(13):205-211. CAO Jianguo,ZHANG Qinjian. Material removal behavior in ultrasonic assisted grinding of SiC ceramics[J]. Journal of Mechanical Engineering,2019,55(13):205-211.
[20] 王欢.快速成型SiC陶瓷基复合材料及其性能研究[D].西安:西安理工大学,2019. WANG Huang. Research on rapid prototyping SiC ceramic matrix composites and their properties[D]. Xi'an:Xi'an University of Technology,2019.
[21] 吴重军,李蓓智.碳化硅磨削微观损伤机理及其高性能磨削技术研究[J].机械工程学报,2019,55(6):232. WU Chongjun,LI Beizhi. Research on micro-damage mechanism in grinding of silicon carbide and its high performance grinding technology[J]. Journal of Mechanical Engineering,2019,55(6):232.
[22] 刘洋. SiC/SiC陶瓷复合材料损伤失效机理研究[D].哈尔滨:哈尔滨工业大学,2019. LIU Yang. Study on damage failure mechanism of SiC/SiC ceramic matrix composites[D]. Harbin:Harbin Institute of Technology,2019.
[23] 王昊辰.几何可调超声速燃烧室热环境及热结构研究[D].哈尔滨:哈尔滨工业大学,2017. WANG Haochen. The study on the thermal environmental and thermal structure of ramjet variable geometry combustor[D]. Harbin:Harbin Institute of Technology,2017.
[24] 王利和.固体燃料超燃冲压发动机燃烧室工作过程理论与实验研究[D].北京:北京理工大学,2014. WANG Lihe. Theoretical and experimental study on the working process of the solid fuel scramjet combustor[D]. Beijing:Beijing Institute of Technology,2014.
[25] 成来飞,殷小玮,张立同.复合材料原理[M].西安:西北工业大学出版社,2016. CHENG Laifei,YIN Xiaowei,ZHANG Litong. Principle of composite materials[M]. Xi'an:Northwestern Polytechnical University Press,2016.
[26] BRUCE M S. Seal technology for hypersonic vehicle and propulsion systems:An overview[R]. Short Course on Hypersonics Structures and Materials,February 26-28,2008,National Institute of Aerospace,Hampton,VA.