带干摩擦接触的叶根模态阻尼分析方法

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振动与冲击 ›› 2020, Vol. 39 ›› Issue (20) : 281-285.

论文

带干摩擦接触的叶根模态阻尼分析方法

陈俊杰1，臧朝平1，周标1，PETROV E2

作者信息 +

A modal damping analysis method for blade root with friction contact

CHEN Junjie1, ZANG Chaoping1, ZHOU Biao1, PETROV E2

Author information +

文章历史 +

摘要

发展了一种叶根模态阻尼分析方法，针对叶根干摩擦问题，采用带接触的叶根高保真模型，基于能量耗散原理来进行模态阻尼的计算，此方法主要分为三部分：1，在ANSYS有限元软件中采用可描述面与面间摩擦接触交互作用的接触单元，建立带干摩擦接触的叶根高保真模型；2，对其进行模态分析，并在瞬态分析模块中对局部叶根模型进行简谐作用下的强迫振动模拟及求解；3，根据叶根接触面微滑移下干摩擦产生的耗散能，计算获取模态损耗因子。该方法可以对不同振型下带叶根干摩擦阻尼叶片的模态损耗因子进行预测分析。通过带接触面的真实叶根模型对该方法进行了验证，并分析了不同振型下振幅、转速、摩擦系数以及法向和切向接触刚度对模态损耗因子的影响。

Abstract

A method was developed to analyze the modal damping factor in a blade root model, which is based on the frictional dissipated energy at the contact surface of the high fidelity blade root model to calculate the modal damping factor. This method consists of three steps. Firstly, contact elements in the contact surfaces describing the surface-to-surface frictional interaction were applied to establish the high fidelity blade root model in ANSYS. Then, the modal shapes of the blade root model were extracted, and the forced harmonic vibration of the part blade root model was simiulated in transient analysis module. At last, according to the dissipated energy contributed by micro-slip friction at the blade root contact surface, the modal damping factor could be calculated. This method can be applied to analyze the modal damping factor of blade with root friction damping under different vibration modes. The verification of this method was carried out with a realistic blade root model contains contact surfaces, and the influence of the modal shape, vibration amplitude, rotational speed, friction coefficient, normal and tangential contact stiffness were performed.

导出引用

陈俊杰1，臧朝平1，周标1，PETROV E2. 带干摩擦接触的叶根模态阻尼分析方法[J]. 振动与冲击, 2020, 39(20): 281-285

CHEN Junjie1, ZANG Chaoping1, ZHOU Biao1, PETROV E2. A modal damping analysis method for blade root with friction contact[J]. Journal of Vibration and Shock, 2020, 39(20): 281-285

参考文献

[1] Papanikos P, Meguid S A, Stjepanovic Z., Three-dimensional nonlinear finite element analysis of dovetail joints in aeroengine discs[J]. Finite Elements in Analysis and Design, 1998, 29, pp. 173-186
[2] Marquina F J, Coro A, Gutiérrez A, et al., Friction Damping Modeling in High Stress Contact Areas Using Microslip Friction Model[C], Proc. of ASME Turbo Expo 2008, June 9-13, 2008, Berlin, Germany, GT2008-50359
[3] Petrov E. P. and Ewins. D. J., Analysis of essentially non-linear vibration of large-scale models for bladed discs with variable contact and friction at root joints[C], Proc. of the 8th Int. Conference on Vibrations in Rotating Machinery, Sep 07-09, 2004, Swansea, UK
[4] Petrov E P, Ewins D J., Effects of Damping and Varying Contact Area at Blade-Disk Joints in Forced Response Analysis of Bladed Disk Assemblies[J]. J. of Turbomachinery, 2006, 128(128), pp. 403-410
[5] Zucca S, Gola M, Firrone C M., A Method for the Calculation of Friction Damping in Blade Root Joints[C], Proc. of ASME 2010, Biennial Conference on Engineering Systems Design and Analysis, July 12-14, 2010, Istanbul, Turkey, ESDA 2010-24948
[6] 上官博, 刘雅琳, 徐自力. 燕尾型叶根松装叶片系统参数对干摩擦减振效应的影响[J]. 振动与冲击, 2012, 31(19):180-182.
Shangguan Bo, Liu Yalin, Xu Zili, Effect of Parameters of A Blade System with Loosely Assembled Dovetail Attachment on Dry Friction Damping[J], Journal of Vibration and Shock, 2012, 31(19):180-182
[7] 徐超, 李东武, 陈学前,等. 考虑法向载荷变化的微滑摩擦系统振动分析[J]. 振动与冲击, 2017, 36(13):122-127.
Xu Chao, Li Dongwu, Chen Xueqian, Vibration Analysis for a Micro-slip Frictional System Considering Variable Normal Load[J], Journal of Vibration and Shock, 2017, 36(13):122-127.
[8] Chen J, Zang C, Zhou B, Petrov, E., Analysis of Micro-Slip Properties for Models of Bladed Disc Friction Joints[C], Proc. of ASME Turbo Expo 2017, June 26-30, 2017, Charlotte, NC, USA, GT2017-64269
[9] Firrone C M, Bertino I., Experimental Investigation on the Damping Effectiveness of Blade Root Joints[J]. Experimental Mechanics,2015, 55(5), pp. 1-8
[10] Petrov, E., A high-accuracy model reduction for analysis of nonlinear vibrations in structures with contact interfaces[J], Trans. ASME: J. of Eng. for Gas Turbines and Power, Oct 2011, Vol.133, 102503
[11] Festjens H., Chevallier G., Dion J.-L., A numerical tool for the design of assembled structures under dynamic loads[J], International Journal of Mechanical Sciences, 2013, 75, pp. 170-177
[12] Chen J, Zang C, Zhou B, Petrov, E., Analysis of Nonlinear Modal Damping due to Friction at Blade Roots Using High-fidelity Modelling[C], Proc. of ASME Turbo Expo 2018, June 11-15, 2018, Oslo, Norway, GT2018-76546
[13] Rao S S著, 李欣业, 张明路译, 机械振动（第4版）[M], 北京:清华大学出版社, 2009: 100-101.
[14] Schwingshackl C W. Measurement of Friction Contact Parameters for Nonlinear Dynamic Analysis[J]. Archives of Industrial Hygiene & Toxicology, 2012, 17(3):317-22.
[15] Schwingshackl C W, Petrov E P, Ewins D J. Effects of Contact Interface Parameters on Vibration of Turbine Bladed Disks With Underplatform Dampers[J]. Journal of Engineering for Gas Turbines & Power, 2012, 134(134):032507.