Structural design and mechanical property experiments of metal rubber support for rotor system
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摘要:
针对燃气发生器转子系统支承结构设计问题，开展支承结构力学特性对转子动力学特性的影响分析，在此基础上，提出一种金属橡胶支承结构，并以保障转子系统临界转速裕度和降低转子系统动力响应为目标，开展金属橡胶支承结构力学性能的优化设计，开展金属橡胶支承结构的力学性能试验，测试其准静态力学性能和动态力学性能。结果表明：优化金属橡胶支承结构的刚度和阻尼系数后，转子系统在两阶临界转速下的支点动载荷幅值下降约40%，在扫频试验中，优化后的金属橡胶支承结构在峰值处频响函数降幅可达70%，验证了金属橡胶支承结构的有效性，对转子系统支承结构设计具有重要的工程参考价值。
Abstract:Considering the design of the support structure for the rotor system of the gas generator, the influence of the mechanical characteristics of the support structure on the dynamic characteristics of the rotor was analyzed. On this basis, a metal rubber support structure was proposed, and the mechanical properties of the metal rubber support structure were optimized to ensure the critical speed margin and reduce the dynamic response of the rotor system. The quasi-static mechanical properties and dynamic mechanical properties of the metal rubber support structure were tested. The results showed that: after optimization of the stiffness and damping coefficient of the metal rubber support structure, the amplitude of the fulcrum dynamic load of the rotor system at two critical speeds was reduced by about 40%. In the sweep frequency test, the frequency response function of the optimized metal rubber support structure at the peak was reduced by up to 70%, which verified the effectiveness of the metal rubber support structure. This research has important engineering reference value for the support structure design of rotor systems.
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图 7 支点当量刚度对平动振型模态频率的影响规律
Figure 7. Influence of equivalent fulcrum stiffness on the modal frequency of translational mode
图 8 支点当量刚度对俯仰振型模态频率的影响规律
Figure 8. Influence of equivalent fulcrum stiffness on the modal frequency of pitch mode
图 9 支点当量刚度对一阶弯曲振型模态频率的影响规律
Figure 9. Influence of equivalent fulcrum stiffness on the modal frequency of first order bending mode
图 19 支承结构刚度和阻尼系数设计流程
Figure 19. Design flow of stiffness and damping coefficient of the support structure
图 20 优化前后3#支点动载荷对比示意图
Figure 20. Comparison diagram of 3# fulcrum dynamic load before and after optimization
图 21 优化前后4#支点动载荷对比示意图
Figure 21. Comparison diagram of 4# fulcrum dynamic load before and after optimization
图 25 金属橡胶支承结构准静态力学性能测试装置
Figure 25. Testing equipment for quasi-static mechanical properties of metal rubber support structure
图 27 金属橡胶支承结构动态力学性能测试装置
Figure 27. Testing equipment for dynamic mechanical properties of metal rubber support structure
图 28 金属橡胶支承结构加速度导纳曲线
Figure 28. Acceleration admittance curves of metal rubber support structure
表 1 优化后金属橡胶支承结构刚度和阻尼系数
Table 1. Stiffness and damping coefficient of metal rubber support structure after optimization
支承结构 刚度/107 （N/m） 阻尼系数/ （（N·s）/m） 3# 2.1 2763 4# 2.2 2357 
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表 2 金属橡胶参数汇总
Table 2. Parameters of metal rubber
编号 丝径/mm 螺旋径/mm 相对密度 外径/mm 3# 0.12 1.2 0.16 100 4# 0.12 1.2 0.18 102
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表 3 3#金属橡胶支承结构刚度及损耗因子汇总
Table 3. Stiffness and loss factor of 3# metal rubber support structure
参数 位置1 位置2 位置3 平均值 刚度/107 （N/m） 2.165 2.171 2.166 2.167 损耗因子 0.1173 0.1183 0.1184 0.1180
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表 4 4#金属橡胶支承结构刚度及损耗因子汇总
Table 4. Stiffness and loss factor of 4# metal rubber support structure
参数 位置1 位置2 位置3 平均值 刚度/107 （N/m） 2.228 2.223 2.220 2.224 损耗因子 0.1023 0.1039 0.1012 0.1025
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[1] 刘永泉, 王德友, 洪杰, 等. 航空发动机整机振动控制技术分析[J]. 航空发动机, 2013, 39(5): 1-8, 13. LIU Yongquan, WANG Deyou, HONG Jie, et al. Analysis of whole aeroengine vibration control technology[J]. Aeroengine, 2013, 39(5): 1-8, 13. (in Chinese doi: 10.3969/j.issn.1672-3147.2013.05.001LIU Yongquan, WANG Deyou, HONG Jie, et al. Analysis of whole aeroengine vibration control technology[J]. Aeroengine, 2013, 39(5): 1-8, 13. (in Chinese) doi: 10.3969/j.issn.1672-3147.2013.05.001 [2] COOPER S. Preliminary investigation of oil films for the control of vibration[J]. Wear, 1963, 6(6): 496. [3] 陈光, 洪杰, 马艳红. 航空燃气涡轮发动机结构[M]. 北京: 北京航空航天大学出版社, 2010. CHEN Guang, HONG Jie, MA Yanhong. Structure of aircraft gas turbine engine [M]. Beijing: Beijing University of Aeronautics and Astronautics Press, 2010. (in ChineseCHEN Guang, HONG Jie, MA Yanhong. Structure of aircraft gas turbine engine [M]. Beijing: Beijing University of Aeronautics and Astronautics Press, 2010. (in Chinese) [4] 李超, 金福艺, 王东, 等. 转子结构布局及其力学特性优化设计[J]. 航空动力学报, 2019, 34(2): 282-291. LI Chao, JIN Fuyi, WANG Dong, et al. Optimum design of rotor structure layout and its mechanical properties[J]. Journal of Aerospace Power, 2019, 34(2): 282-291. (in ChineseLI Chao, JIN Fuyi, WANG Dong, et al. Optimum design of rotor structure layout and its mechanical properties[J]. Journal of Aerospace Power, 2019, 34(2): 282-291. (in Chinese) [5] 于天彪, 江早, 巩亚东, 等. 挤压油膜阻尼器在深孔加工中的实验[J]. 东北大学学报(自然科学版), 2002, 23(6): 577-580. YU Tianbiao, JIANG Zao, GONG Yadong, et al. Experiment of squeeze film damper for deep hole machining[J]. Journal of Northeastern University (Natural Science), 2002, 23(6): 577-580. (in Chinese doi: 10.3321/j.issn:1005-3026.2002.06.019YU Tianbiao, JIANG Zao, GONG Yadong, et al. Experiment of squeeze film damper for deep hole machining[J]. Journal of Northeastern University (Natural Science), 2002, 23(6): 577-580. (in Chinese) doi: 10.3321/j.issn:1005-3026.2002.06.019 [6] 李玉龙, 何忠波, 白鸿柏, 等. 金属橡胶的研究及应用进展[J]. 兵器材料科学与工程, 2011, 34(1): 103-108. LI Yulong, HE Zhongbo, BAI Hongbai, et al. Advances in research and application of metal rubber[J]. Ordnance Material Science and Engineering, 2011, 34(1): 103-108. (in Chinese doi: 10.3969/j.issn.1004-244X.2011.01.029LI Yulong, HE Zhongbo, BAI Hongbai, et al. Advances in research and application of metal rubber[J]. Ordnance Material Science and Engineering, 2011, 34(1): 103-108. (in Chinese) doi: 10.3969/j.issn.1004-244X.2011.01.029 [7] 李宇燕, 黄协清, 宋凯. 金属橡胶非线性干摩擦副的接触作用机理及其仿真结果分析[J]. 振动与冲击, 2011, 30(7): 77-81. LI Yuyan, HUANG Xieqing, SONG Kai. Contacting mechanism of nonlinear friction pair of metallic rubber and its simulation results[J]. Journal of Vibration and Shock, 2011, 30(7): 77-81. (in Chinese doi: 10.3969/j.issn.1000-3835.2011.07.014LI Yuyan, HUANG Xieqing, SONG Kai. Contacting mechanism of nonlinear friction pair of metallic rubber and its simulation results[J]. Journal of Vibration and Shock, 2011, 30(7): 77-81. (in Chinese) doi: 10.3969/j.issn.1000-3835.2011.07.014 [8] 张大义, 夏颖, 张启成, 等. 金属橡胶力学性能研究进展与展望[J]. 航空动力学报, 2018, 33(6): 1432-1445. ZHANG Dayi, XIA Ying, ZHANG Qicheng, et al. Researches on metal rubber mechanics properties in retrospect and pro-spect[J]. Journal of Aerospace Power, 2018, 33(6): 1432-1445. (in ChineseZHANG Dayi, XIA Ying, ZHANG Qicheng, et al. Researches on metal rubber mechanics properties in retrospect and pro-spect[J]. Journal of Aerospace Power, 2018, 33(6): 1432-1445. (in Chinese) [9] 马艳红, 陆宏伟, 朱海雄, 等. 弹性环金属橡胶支承结构刚度设计与试验验证[J]. 航空学报, 2013, 34(6): 1301-1308. MA Yanhong, LU Hongwei, ZHU Haixiong, et al. Structural stiffness design and experimental evaluation of elastic ring metal rubber damper[J]. Acta Aeronautica et Astronautica Sinica, 2013, 34(6): 1301-1308. (in ChineseMA Yanhong, LU Hongwei, ZHU Haixiong, et al. Structural stiffness design and experimental evaluation of elastic ring metal rubber damper[J]. Acta Aeronautica et Astronautica Sinica, 2013, 34(6): 1301-1308. (in Chinese) [10] 顾家柳, 丁奎元, 刘君洲, 等. 转子动力学[M]. 北京: 国防工业出版社, 1985. GU Jialiu, DING Kuiyuan, LIU Junzhou, et al. Rotor dynamics[M]. Beijing: National Defense Industry Press, 1985. (in ChineseGU Jialiu, DING Kuiyuan, LIU Junzhou, et al. Rotor dynamics[M]. Beijing: National Defense Industry Press, 1985. (in Chinese) [11] 洪杰, 马艳红, 张大义. 航空燃气轮机总体结构设计与动力学分析[M]. 北京: 北京航空航天大学出版社, 2014. HONG Jie, MA Yanghong, ZHANG Dayi. Structure design and dynamic analysis of aircraft gas turbine engine [M]. Beijing: Beijing University of Aeronautics and Astronautics Press, 2014. (in ChineseHONG Jie, MA Yanghong, ZHANG Dayi. Structure design and dynamic analysis of aircraft gas turbine engine [M]. Beijing: Beijing University of Aeronautics and Astronautics Press, 2014. (in Chinese) [12] BARRETT L E, GUNTER E J, ALLAIRE P E. Optimum bearing and support damping for unbalance response and stability of rotating machinery[J]. Journal of Engineering for Gas Turbines and Power, 1978, 100(1): 89-94. [13] 廖明夫, 谭大力, 耿建明, 等. 航空发动机高压转子的结构动力学设计方法[J]. 航空动力学报, 2014, 29(7): 1505-1519. LIAO Mingfu, TAN Dali, GENG Jianming, et al. Structure dynamics design method of aero-engine high pressure rotor[J]. Journal of Aerospace Power, 2014, 29(7): 1505-1519. (in ChineseLIAO Mingfu, TAN Dali, GENG Jianming, et al. Structure dynamics design method of aero-engine high pressure rotor[J]. Journal of Aerospace Power, 2014, 29(7): 1505-1519. (in Chinese) [14] 洪杰, 王华, 肖大为, 等. 转子支承动刚度对转子动力特性的影响分析[J]. 航空发动机, 2008 (1): 23-27. HONG Jie, WANG Hua, XIAO Dawei, et al. Effects of dynamic stiffness of rotor bearing on rotor-dynamic characteristics[J]. Aeroengine, 2008 (1): 23-27. (in Chinese doi: 10.3969/j.issn.1672-3147.2008.01.008HONG Jie, WANG Hua, XIAO Dawei, et al. Effects of dynamic stiffness of rotor bearing on rotor-dynamic characteristics[J]. Aeroengine, 2008 (1): 23-27. (in Chinese) doi: 10.3969/j.issn.1672-3147.2008.01.008 [15] 于欢, 马艳红, 肖森, 等. 高速柔性转子支承松动力学特征及动力特性[J]. 北京航空航天大学学报, 2017, 43(8): 1677-1683. YU Huan, MA Yanhong, XIAO Sen, et al. Mechanical and dynamic characteristics of bearing with looseness on high-speed flexible rotor[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(8): 1677-1683. (in ChineseYU Huan, MA Yanhong, XIAO Sen, et al. Mechanical and dynamic characteristics of bearing with looseness on high-speed flexible rotor[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(8): 1677-1683. (in Chinese) [16] 洪杰, 于欢, 肖森, 等. 高速柔性转子系统非线性振动响应特征分析[J]. 北京航空航天大学学报, 2018, 44(4): 653-661. HONG Jie, YU Huan, XIAO Sen, et al. Nonlinear vibration response characteristics of high-speed flexible rotor system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(4): 653-661. (in ChineseHONG Jie, YU Huan, XIAO Sen, et al. Nonlinear vibration response characteristics of high-speed flexible rotor system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(4): 653-661. (in Chinese) [17] LOPEZ R H, RITTO T G, SAMPAIO R, et al. A new algorithm for the robust optimization of rotor-bearing systems[J]. Engineering Optimization, 2014, 46(8): 1123-1138-1138. doi: 10.1080/0305215X.2013.819095 [18] 洪杰, 宋制宏, 王东, 等. 高速转子系统支承结构及力学特性设计方法[J]. 航空动力学报, 2019, 34(5): 961-970. HONG Jie, SONG Zhihong, WANG Dong, et al. Design method for bearing-support structure and mechanical properties of high-speed rotor system[J]. Journal of Aerospace Power, 2019, 34(5): 961-970. (in ChineseHONG Jie, SONG Zhihong, WANG Dong, et al. Design method for bearing-support structure and mechanical properties of high-speed rotor system[J]. Journal of Aerospace Power, 2019, 34(5): 961-970. (in Chinese) [19] 罗忠, 刘凯宁, 刘家希, 等. 支承动刚度对转子系统临界转速的影响及试验验证[J]. 机械工程学报, 2023, 59(21): 245-255. LUO Zhong, LIU Kaining, LIU Jiaxi, et al. Influence of dynamic stiffness of support on critical speed of rotor system and experimental verification[J]. Journal of Mechanical Engineering, 2023, 59(21): 245-255. (in Chinese doi: 10.3901/JME.2023.21.245LUO Zhong, LIU Kaining, LIU Jiaxi, et al. Influence of dynamic stiffness of support on critical speed of rotor system and experimental verification[J]. Journal of Mechanical Engineering, 2023, 59(21): 245-255. (in Chinese) doi: 10.3901/JME.2023.21.245 [20] 刘永泉, 肖森, 洪杰, 等. 三支点柔性转子系统支承不同心激励特征及振动响应分析[J]. 航空学报, 2017, 38(3): 220470. LIU Yongquan, XIAO Sen, HONG Jie, et al. Excitation characteristic and dynamic response of misalignment of flexible rotor system with three supportings[J]. Acta Aeronautica et Astronautica Sinica, 2017, 38(3): 220470. (in ChineseLIU Yongquan, XIAO Sen, HONG Jie, et al. Excitation characteristic and dynamic response of misalignment of flexible rotor system with three supportings[J]. Acta Aeronautica et Astronautica Sinica, 2017, 38(3): 220470. (in Chinese) [21] MA Y, TANG X, WANG Y, et al. Design of nonlinear metal rubber isolator subjected to random vibration[J]. Mechanical Systems and Signal Processing, 2023, 197: 110375. [22] MA Y, ZHANG Q, ZHANG D, et al. The mechanics of shape memory alloy metal rubber[J]. Acta Materialia, 2015, 96: 89-100. doi: 10.1016/j.actamat.2015.05.031 -
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