Analysis on analytical modelling and damping characteristics of bolted joint structure with spigot
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摘要: 针对止口螺栓连接,论文从连接结构轴向拉压力学行为分析出发,提出了可模拟连接非线性刚度和阻尼耗散的扇区模型,基于此进一步构建了弯矩载荷下的非线性解析模型。通过与三维实体有限元模型计算结果的对比分析,验证了所提出模型的有效性,并揭示了连接的非线性刚度特性和迟滞阻尼特性。基于所提出模型研究了关键参数对止口螺栓的阻尼特性的影响规律,结果表明:连接的阻尼耗散能力随弯矩载荷幅值和摩擦因数的增加呈现先增加后降低趋势,而随止口紧度和法兰长度的增加单调增加;法兰长度除对连接的阻尼耗散存在一定影响外,还能显著降低连接结构的等效刚度。Abstract: For the bolted joint with spigot,a nonlinear model for the single region of bolted joint under axial loads was built.Based on this model,the nonlinear analytical model was further proposed to describe the behavior of joint under bending moment.By performing a comparison study with the finite contact element model,the accuracy of the analytical model was validated,meanwhile,the nonlinear stiffness and damping characteristics of the joint were highlighted.Finally,the influence law of key parameters on joints' damping characteristics was investigated.The results showed that the ability of damping dissipation of bolted joint firstly increased and then decreased with the increase of bending moment amplitude and friction coefficient,while the ability of damping dissipation increased for the increasing interference fit of spigot and flange length.More importantly,flange length can not only affect the damping characteristics,but also decrease the equivalent stiffness of bolted joint significantly.
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Key words:
- bolted joint with spigot /
- hysteresis curve /
- damping characteristic /
- loss factor /
- analytical model
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[1] LIU S,MA Y,ZHANG D,et al.Studies on dynamic characteristics of the joint in the aero-engine rotor system[J].Mechanical Systems and Signal Processing,2012,29:120-136. [2] BOGRAD S,REUSS P,SCHMIDT A,et al.Modeling the dynamics of mechanical joints[J].Mechanical Systems and Signal Processing,2011,25(8):2801-2826. [3] HONG J,YU P,MA Y,et al.Investigation on nonlinear lateral-torsional coupled vibration of a rotor system with substantial unbalance[J].Chinese Journal of Aeronautics,2020,33(6):1642-1660. [4] OUYANG H,OLDFIELD M,MOTTERSHEAD J E,et al.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. [5] ARGATOV I,BUTCHER E A.On the Iwan models for lap-type bolted joints[J].International Journal of Non-linear Mechanics,2011,46(2):347-356. [6] SCHWINGSHACKL C W,PETROV E P.Modeling of flange joints for the nonlinear dynamic analysis of gas turbine engine casings[J].Journal of Engineering for Gas Turbines and Power,2012,134(12):122504.1-122504.4. [7] 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. [8] 翟学,翟庆刚,王建军,等.基于有限元的螺栓连接参数化建模技术研究[J].推进技术,2016,37(7):1364-1371. [9] QIN Z Y,HAN Q K,CHU F L.Analytical model of bolted disk-drum joints and its application to dynamic analysis of jointed rotor[J].Journal of Mechanical Engineering Science,2014,228(4):646-663. [10] LUAN Y,GUAN Z,CHNEG G,et al.A simplified nonlinear dynamic model for the analysis of pipe structures with bolted flange joints[J].Journal of Sound and Vibration,2012,331(2): 325-344. [11] 刘卓乾,曹树谦,郭虎伦,等.含螺栓连接转子系统 非线性振动特性研究[J].振动与冲击,2016,35(22):10-16,37. [12] WANG C,ZHANG D,ZHU X,et al.Study on the stiffness loss and the dynamic influence on rotor system of the bolted flange joint[R].ASME Paper GT2014-26191,2014. [13] 李伦绪,陈果,于平超,等.止口螺栓连接结构非线性刚度机理分析及数值仿真[J].航空动力学报,2021,36(2):358-368. [14] 王志,李吉凯,刘玉.带止口法兰连接结构刚度特性对结构振动影响[J].航空动力学报,2019,34(6):1201-1208. [15] BEAUDOIN M,BEHDINAN K.Analytical lump model for the nonlinear dynamic response of bolted flanges in aero-engine casings[J].Mechanical Systems and Signal Processing,2019,115:14-28. [16] MAYER M,GAUL L.Segment-to-segment contact elements for modelling joint interfaces in finite element analysis[J].Mechanical Systems and Signal Processing,2007,21(2):724-734. [17] 姚星宇,王建军,翟学.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. [18] 赵广,金鑫,崔颖,等.基于模态应变能的接触刚度识别方法[J].机械工程学报,2020,56(9):147-153. [19] 魏龙,刘其和,张鹏高.基于分形理论的滑动摩擦表面 接触力学模型[J].机械工程学报,2012,48(17):106-113. [20] 原园,成雨,张静.基于分形的三维粗糙表面弹塑性接触力学模型与试验验证[J].工程力学,2018,35(6):209-221. [21] GOULD H H,MIKIC B B.Areas of contact and pressure distribution in bolted joints[J].Journal of Engineering for Industry,1972,94(3):864-870. [22] JOFRIET J C,SZE Y,THOMPSON J C.The interface boundary conditions for bolted flanged connections[J].Journal of Pressure Vessel Technology,1981,103(3):240-245. [23] WANG L,LIU H,ZHANG J,et al.Analysis and modeling for flexible joint interfaces under micro and macro scale[J].Precision Engineering,2013,37(4):817-824. [24] JOHNSON K L.Contact Mechanics[J].Journal of Tribology,1985,108(4):84-106. [25] ZHANG Q,LI W,LIANG Z,et al.Study on the stiffness loss and its affecting factors of the spline joint used in rotor systems[R].ASME Paper GT2014-26176,2014. [26] 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. [27] 岳伟,梅庆,张大义,等.高速可拆卸转子止口连接结构稳健性设计方法[J].航空动力学报,2017,32(7):1754-1761. [28] 朱彬,马艳红,张大义,等.金属橡胶迟滞特性本构模型研究[J].物理学报,2012,61(7):474-481.
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