带止口法兰连接结构刚度特性对结构振动影响
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摘要
对带有止口的法兰连接结构刚度特性进行了数值仿真研究。使用有限元软件ANSYS分析了带有止口的法兰连接结构的迟滞特性。通过对止口接触面的变形-滑移机理分析,使用一个詹金斯单元和一个弹簧单元并联模拟法兰的一个扇区,并基于法兰弯曲变形时每个扇区的不同状态建立了整个法兰结构的弯曲刚度简化模型,并对该简化模型进行了仿真,该简化模型能够较准确地模拟带止口法兰连接结构的刚度特性。基于简化模型和梁单元建立了简化转子结构模型,分析了带有止口的法兰连接结构对转子稳态动力学响应的影响。结果表明带有止口的法兰连接结构的迟滞特性能够影响峰值频率,随着止口过盈量的增加,响应峰值显著降低,具有较好的振动抑制效果。
The stiffness characteristics of flange joint with a snap were studied by numerical simulation.The hysteresis characteristic of the flange joint with a snap was analyzed using ANSYS.Based on the analysis of the deformation and sliding of the snap contact surface,a Jenkins friction element was used in parallel with a spring element to simulate a section of the flange joint,and the simplified model of the bending stiffness of the whole flange structure was established according to different states of each section during the bending deformation of the flange.The simplified model can be utilized to simulate the stiffness characteristics of the flange joint with a snap accurately.The rotor model was built based on the stiffness simplified model and beam element,and the influence of the flange joint with a snap on the steady-state response of the rotor was analyzed.The results show that the hysteresis characteristic of the flange joint with a snap can affect the peak frequency and reduce the response peak significantly with the increase of snap interference,producing agood vibration suppression effect.
The stiffness characteristics of flange joint with a snap were studied by numerical simulation.The hysteresis characteristic of the flange joint with a snap was analyzed using ANSYS.Based on the analysis of the deformation and sliding of the snap contact surface,a Jenkins friction element was used in parallel with a spring element to simulate a section of the flange joint,and the simplified model of the bending stiffness of the whole flange structure was established according to different states of each section during the bending deformation of the flange.The simplified model can be utilized to simulate the stiffness characteristics of the flange joint with a snap accurately.The rotor model was built based on the stiffness simplified model and beam element,and the influence of the flange joint with a snap on the steady-state response of the rotor was analyzed.The results show that the hysteresis characteristic of the flange joint with a snap can affect the peak frequency and reduce the response peak significantly with the increase of snap interference,producing agood vibration suppression effect.
引文
[1]姚星宇,王建军.航空发动机螺栓连接载荷与结构参数对连接刚度影响规律[J].推进技术,2017,38(2):424-433.YAO Xingyu,WANG Jianjun.Effects of load and structure parameters of aeroengine bolted joints on joint stiffness[J].Journal of Propulsion Technology,2017,38(2):424-433.(in Chinese)
[2]姚星宇,王建军.航空发动机螺栓连接薄层单元建模方法[J].北京航空航天大学学报,2015,41(12):2269-2279.YAO Xingyu,WANG Jianjun.Modeling method of bolted joints of aero-engine based on thinlayer element[J].Journal of Beijing University of Aeronautics and Astronautics,2015,41(12):2269-2279.(in Chinese)
[3]LIU Shuguo,MA Yanhong,ZHANG Dayi,et al.Studies on dynamic characteristics of the joint in the aeroengine rotor system[J].Mechanical Systems and Signal Processing,2012,29:120-136.
[4]SCHWINGSHACKL C W,DI MAIO D,SEVER I,et al.Modeling and validation of the nonlinear dynamic behavior of bolted flange joints[J].Journal of Engineering for Gas Turbines and Power,2013,135(12):122504.1-122504.8.
[5]QIN Z,HAN Q,CHU F.Bolt loosening at rotating joint interface and its influence on rotor dynamics[J].Engineering Failure Analysis,2016,59(1):456-466.
[6]艾延廷,翟学,王志,等.法向接触刚度对装配体振动模态影响的研究[J].振动与冲击,2012,31(6):171-174.AI Yanting,ZHAI Xue,WANG Zhi,et al.Investigation on the influences of the normal contact stiffness to assembly's vibration modes[J].Journal of Vibration and Shock,2012,31(6):171-174.(in Chinese)
[7]YAO X,WANG J,ZHAI X.Research and application of improved thin layer element method of aeroengine bolted joints[J].Journal of Aerospace Engineering,2016,231(5):823-839.
[8]LUAN Y,GUAN Z,CHENG G,et al.A simplified nonlinear dynamic model for the analysis of pipe sructures with bolted flange joints[J].Journal of Sound and Vibration,2012,331(2):325-344.
[9]WANG C,ZHANG D,ZHU X,et al.Study on the stiffness loss and the dynamic influence on rotor systm of the bolted flange joint[C]∥ASME Turbo Expo 2014:Turbine Technical Conference and Exposition.Dusseldorf,Germany:ASME,2014:16-20.
[10]GAUL L,LENZ J.Nonlinear dynamics of structures assembled by bolted joints[J].Acta Mechanica,1997,125(1/2/3/4):169-181.
[11]QIN Z,YAN S,CHU F.Dynamic characteristics of launch vehicle and spacecraft connected by clamp band[J].Journal of Sound and Vibration,2011,330(10):2161-2173.
[12]BOGRAD S,REUSS P A,SCHMIDT A,et al.Modeling the dynamics of mechanical joints[J].Mechanical Systems and Signal Processing,2011,25(8):2801-2826.
[13]OLDFIELD M,OUYANG H,MOTTERSHEAD J.Simplified models of bolted joints under harmonic loading[J].Computers and Structures,2005,84(1/2):25-33.
[14]OUYANG H,OLDFIELD M,MOTTERSHEAD J.Experimental and theoretical studies of a bolted joint excited by a torsional dynamic load[J].International Journal of Mechanical Sciences,2006,48(12):1447-1455.
[15]HUANG F H,ZHANG D C,WANG H,et al.Mechanism and calculation theory of prying force for flexible flange connection[J].Journal of Constructional Steel Research,2017,132:97-107.
[16]VAN-LONG H,JEAN-PIERRE J,JEAN-FRANOIS D.Behaviour of bolted flange joints in tubular structures under monotonic,repeated and fatigue loadings:Ⅰexperimental tests[J].Journal of Constructional Steel Research,2013,85:1-11.
[17]LIU Y,WANG J,CHEN L.Dynamic characteristics of the flange joint with a snap in aeroengine[J].The International Journal of Acoustics and Vibration,2018,23(2):168-174.
[18]李琳,刘久周,李超.干摩擦阻尼器对宽频多阶次激励减振效果分析[J].航空动力学报,2016,31(9):2171-2180.LI Lin,LIU Jiuzhou,LI Chao.Analysis on damping effect of dry friction damper under wideband multiharmonic excitation[J].Journal of Aerospace Power,2016,31(9):2171-2180.(in Chinese)
[2]姚星宇,王建军.航空发动机螺栓连接薄层单元建模方法[J].北京航空航天大学学报,2015,41(12):2269-2279.YAO Xingyu,WANG Jianjun.Modeling method of bolted joints of aero-engine based on thinlayer element[J].Journal of Beijing University of Aeronautics and Astronautics,2015,41(12):2269-2279.(in Chinese)
[3]LIU Shuguo,MA Yanhong,ZHANG Dayi,et al.Studies on dynamic characteristics of the joint in the aeroengine rotor system[J].Mechanical Systems and Signal Processing,2012,29:120-136.
[4]SCHWINGSHACKL C W,DI MAIO D,SEVER I,et al.Modeling and validation of the nonlinear dynamic behavior of bolted flange joints[J].Journal of Engineering for Gas Turbines and Power,2013,135(12):122504.1-122504.8.
[5]QIN Z,HAN Q,CHU F.Bolt loosening at rotating joint interface and its influence on rotor dynamics[J].Engineering Failure Analysis,2016,59(1):456-466.
[6]艾延廷,翟学,王志,等.法向接触刚度对装配体振动模态影响的研究[J].振动与冲击,2012,31(6):171-174.AI Yanting,ZHAI Xue,WANG Zhi,et al.Investigation on the influences of the normal contact stiffness to assembly's vibration modes[J].Journal of Vibration and Shock,2012,31(6):171-174.(in Chinese)
[7]YAO X,WANG J,ZHAI X.Research and application of improved thin layer element method of aeroengine bolted joints[J].Journal of Aerospace Engineering,2016,231(5):823-839.
[8]LUAN Y,GUAN Z,CHENG G,et al.A simplified nonlinear dynamic model for the analysis of pipe sructures with bolted flange joints[J].Journal of Sound and Vibration,2012,331(2):325-344.
[9]WANG C,ZHANG D,ZHU X,et al.Study on the stiffness loss and the dynamic influence on rotor systm of the bolted flange joint[C]∥ASME Turbo Expo 2014:Turbine Technical Conference and Exposition.Dusseldorf,Germany:ASME,2014:16-20.
[10]GAUL L,LENZ J.Nonlinear dynamics of structures assembled by bolted joints[J].Acta Mechanica,1997,125(1/2/3/4):169-181.
[11]QIN Z,YAN S,CHU F.Dynamic characteristics of launch vehicle and spacecraft connected by clamp band[J].Journal of Sound and Vibration,2011,330(10):2161-2173.
[12]BOGRAD S,REUSS P A,SCHMIDT A,et al.Modeling the dynamics of mechanical joints[J].Mechanical Systems and Signal Processing,2011,25(8):2801-2826.
[13]OLDFIELD M,OUYANG H,MOTTERSHEAD J.Simplified models of bolted joints under harmonic loading[J].Computers and Structures,2005,84(1/2):25-33.
[14]OUYANG H,OLDFIELD M,MOTTERSHEAD J.Experimental and theoretical studies of a bolted joint excited by a torsional dynamic load[J].International Journal of Mechanical Sciences,2006,48(12):1447-1455.
[15]HUANG F H,ZHANG D C,WANG H,et al.Mechanism and calculation theory of prying force for flexible flange connection[J].Journal of Constructional Steel Research,2017,132:97-107.
[16]VAN-LONG H,JEAN-PIERRE J,JEAN-FRANOIS D.Behaviour of bolted flange joints in tubular structures under monotonic,repeated and fatigue loadings:Ⅰexperimental tests[J].Journal of Constructional Steel Research,2013,85:1-11.
[17]LIU Y,WANG J,CHEN L.Dynamic characteristics of the flange joint with a snap in aeroengine[J].The International Journal of Acoustics and Vibration,2018,23(2):168-174.
[18]李琳,刘久周,李超.干摩擦阻尼器对宽频多阶次激励减振效果分析[J].航空动力学报,2016,31(9):2171-2180.LI Lin,LIU Jiuzhou,LI Chao.Analysis on damping effect of dry friction damper under wideband multiharmonic excitation[J].Journal of Aerospace Power,2016,31(9):2171-2180.(in Chinese)