突加不平衡作用下转子系统的主动降载实验
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摘要
为了实现突加不平衡作用下的转子安全性设计,分析了突加不平衡作用下的锥壁降载结构机理,设计了支承刚度可控的主动降载实验系统并进行了实验验证。结果表明:锥壁熔断降载的本质是减小转子支承刚度,从而降低临界转速并在减速停车时降低转子支承载荷与相应振幅。设计的主动降载机构利用可控支承,自适应地改变支承刚度,有效的模拟锥壁熔断降载作用,并能够低成本、重复性的实验验证熔断降载机理,为突加不平衡的安全性设计提供实验条件与数据支撑。
In order to finish the safety design of rotor system under sudden unbalance,the principle of load reduction by cone wall fused under sudden load was analyzed,the active load reduction experimental system with changing stiffness support was designed and experimental verification was finished.Research shows that the essence of cone wall fuse capable of reducing load is to reduce the stiffness of rotor support,accordingly,reduce the critical speed,the supporting load and amplitude in the deceleration process.The active load reduction structure change the support stiffness adaptively using changing stiffness,and can simulate the load reduction of cone wall fuse completely.Furthermore,it can verify the principle of load reduction by low-cost and highly repetitive experiment,and provide experimental conditions and data support for safety design of sudden unbalance.
In order to finish the safety design of rotor system under sudden unbalance,the principle of load reduction by cone wall fused under sudden load was analyzed,the active load reduction experimental system with changing stiffness support was designed and experimental verification was finished.Research shows that the essence of cone wall fuse capable of reducing load is to reduce the stiffness of rotor support,accordingly,reduce the critical speed,the supporting load and amplitude in the deceleration process.The active load reduction structure change the support stiffness adaptively using changing stiffness,and can simulate the load reduction of cone wall fuse completely.Furthermore,it can verify the principle of load reduction by low-cost and highly repetitive experiment,and provide experimental conditions and data support for safety design of sudden unbalance.
引文
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[15]马艳红,梁智超,王桂华,等.航空发动机叶片丢失问题研究综述[J].航空动力学报,2016,31(3):513-526.MA Yanhong,LIANG Zhichao,WANG Guihua,et al.Review on the blade loss of aero-engine[J].Journal of Aerospace Power,2016,31(3):513-526.(in Chinese)
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[18]王四季,廖明夫,刘永泉,等.航空发动机轴承外环装配引起的转子系统非线性振动[J].航空动力学报,2015,30(1):82-89.WANG Siji,LIAO Mingfu,LIU Yongquan,et al.Review on the blade loss of aero-engine[J].Journal of Aerospace Power,2015,30(1):82-89.(in Chinese)
[2]中国民用航空总局.航空发动机适航规定:CCAR-33-R2[S].北京:中国民用航空局总局,2011:38-78.
[3]Federal Aviation Regulations.Airwor thiness standards:aircraftengines:14CFR Part 33[S].Washington:Federal Aviation Administration,1993:81-99.
[4]European Aviation Safety Agency.Certification specifications for engines:CS-E[S].Cologne,Germany:European Aviation Safety Agency,2009:140-141.
[5]KASTL J A,VONDRELL R M,GLYNN C C.Fan decoupling fuse:US6402469[P].2002-06-11.
[6]KASTL J A,VONDRELL R M.Bearing support fuse:US6447248[P].2002-09-10.
[7]VAN DUYU K G.Turbine engine bearing:US6331078[P].2001-12-18.
[8]VAN DUYU K G.Gas turbine engine bearing support:EU1596038[P].2005-11-16.
[9]DOERFLEIN T M,WILTON S A,LYNN A B.Method and apparatus for supporting rotor assemblies during unbalance:US6783319[P].2004-08-31.
[10]LYNN A B,CHARLES G C,LEE F K,et al.Bearing assembly for a gas turbine engine:EU1191191[P].2002-03-27.
[11]贾润田.转子突加不平衡响应特性研究[D].西安:西北工业大学,2017.JIA Runtian.Response characteristics of rotor with accidental dynamic imbalance[D].Xi'an:Northwestern Polytechnical University,2017.(in Chinese)
[12]熊雨浓.叶片飞脱下转子动力学响应研究[D].西安:西北工业大学,2018.XIONG Yunong.Study of rotor dynamics under blade-off status[D].Xi'an:Northwestern Polytechnical University,2018.(in Chinese)
[13]王珏.转子突加不平衡冲击响应的实验研究[D].西安:西北工业大学,2018.WANG Jue.Experimental study of the sudden imbalance impact response of rotor system[D].Xi'an:Northwestern Polytechnical University,2018.(in Chinese)
[14]彭刚,李超,曹冲,等.冲击激励转子系统动力学响应及安全性设计[J].推进技术,2018,39(5):1111-1121.PENG Gang,LI Chao,CAO Chong,et al.Dynamic response and safety design of rotor system with impact excitation[J].Journal of Propulsion Technology,2018,39(5):1111-1121.(in Chinese)
[15]马艳红,梁智超,王桂华,等.航空发动机叶片丢失问题研究综述[J].航空动力学报,2016,31(3):513-526.MA Yanhong,LIANG Zhichao,WANG Guihua,et al.Review on the blade loss of aero-engine[J].Journal of Aerospace Power,2016,31(3):513-526.(in Chinese)
[16]廖明夫.航空发动机转子动力学[M].西安:西北工业大学出版社,2015.
[17]王四季,廖明夫,侯理臻,等.航空发动机试验器突加不平衡的加载装置:106611553[P].2017-05-03.
[18]王四季,廖明夫,刘永泉,等.航空发动机轴承外环装配引起的转子系统非线性振动[J].航空动力学报,2015,30(1):82-89.WANG Siji,LIAO Mingfu,LIU Yongquan,et al.Review on the blade loss of aero-engine[J].Journal of Aerospace Power,2015,30(1):82-89.(in Chinese)