Analytical model of bolted disk–drum joints and its application to dynamic analysis of jointed rotor

Qin, Zhaoye; Han, Qinkai; Chu, Fulei

doi:10.1177/0954406213489084

Cited by 118 publications

(94 citation statements)

References 25 publications

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“…Ahmadian et al (2007) and Jaumouillé et al (2010) also used the incremental harmonic balance (IHB) method to obtain dynamic response of a model developed for the assembled structure including the generic joint interface element. Qin et al (2013) investigated the bending characteristics of the bolted disk-drum joint and calculated the steady-state response of the jointed rotor using the harmonic balance method. Luan et al (2012) developed a mass-spring system to obtain dynamic response of bolted flange joints subjected to coupling vibration of transverse and longitudinal direction.…”

Section: Introductionmentioning

confidence: 99%

Numerical and theoretical studies of bolted joints under harmonic shear displacement

Liu

Ouyang

Ma³

et al. 2015

Lat. Am. j. solids struct.

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A three-dimensional finite element model used to simulate the bolted joint is created using ABAQUS package. The stress concentration factors at the roots of the thread are first studied with a preload of 38.4 kN. Under harmonic transverse shear displacement, not only the stress variations at ten specified points of the first thread but also contact conditions between the contacting surfaces are studied. By changing the preload value, relative displacement, the coefficient of friction between the two clamped plates successively and the loading frequency, their effects on the hysteresis loops of the transverse load versus the relative displacement of the joint are then analyzed. Finally the hysteresis loops are produced by the Masing model. It is found that due to the greatest stress concentration factor, fatigue failure will occur at the root of the first thread. With the increase of preload value, the amplitude of displacement and the coefficient of friction, frictional energy dissipation of the joint increases. Very good agreement is achieved between the hysteresis loops produced from the fourth-order Masing model and the detailed ABAQUS model and therefore the fourth-order Masing model can replace the timeconsuming finite element model.

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Section: Introductionmentioning

confidence: 99%

Numerical and theoretical studies of bolted joints under harmonic shear displacement

Liu

Ouyang

Ma³

et al. 2015

Lat. Am. j. solids struct.

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show abstract

“…1,2 For example, thin-walled turbine discs of an aero engine have complex stress conditions and always stay in a state of vibration, which may cause serious problems. Therefore, it is extremely important to analyze vibration characteristics.…”

Section: Introductionmentioning

confidence: 99%

The similitude design method of thin-walled annular plates and determination of structural size intervals

Zhang

Wang

Zhu

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part C:

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For the design problem of dynamic similitude models of an aero engine's turbine discs, distorted scaling laws and structural size intervals of thin walled annular plates are established in the research. According to the governing equation, the geometrically complete scaling law of thin walled annular plates is firstly established. In order to determine accurate distorted scaling laws of thin walled annular plates, three significant principles are proposed and theoretically proved combining the governing equation and the sensitivity analysis. According to results of the sensitivity analysis, accurate distorted scaling laws of thin walled annular plates are obtained based on significant principles. In addition, structural size intervals of distorted scaling laws of thin walled annular plates are calculated by the numerical method. Finally, the previous six orders' natural frequencies of thin walled annular plates are discussed as examples to verify the theory presented in this research, and distorted scaling laws of each order's natural frequency are obtained and the corresponding structural size intervals are analyzed.

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“…[1] Yuan et al [2] showed that, even with a small bending moment, the rotor disk contact surface will still be partially separated, resulting in a decrease of the overall stiffness of the rotor. Qin, Z. Y et al [3] studied the stiffness of the drum rotor contact surface of an aero-engine. The results show that the relative rotation angle between the disks exists a nonlinear variation region with the linear increase of the bending moment.…”

Section: Introductionmentioning

confidence: 99%

The Nonlinear Dynamics of a Rod-fastened Rotor

Da¹,

Yuan²,

Li³

et al. 2019

Proceedings of Global Power &Amp; Propulsion Society

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Nonlinear bending stiffness of a rod-fastened rotor varies with applied loads posing a significant influence on the dynamic behavior. In this paper, the cubic model is adopted to perform an analysis of the nonlinear dynamic characteristics of a rod-fastend rotor: Firstly, the bending stiffness of a rod-fastened rotor involving two separate disks is obtained making use of the 3D FEM model. Then, a cubic stiffness model is applied to approximate the nonlinear stiffness and subsequently the corresponding governing equation can be derived. The harmonic balance method(HBM) as well as an iterative optimization method based on Broyden algorithm are adopted to yield the steady state response. Finally, influences of different parameters on rotor dynamics are further investigated in this manuscript. The results show that the cubic model can be used to demonstrate the amplitude jump behavior of the rod-fastened rotor and has an abundant nonlinear behavior. Furthermore, by adjusting the nonlinear system parameters, the position of the unstable region in the amplitude-frequency response curve can be changed, thereby effectively preventing the rotor system from operating in an unstable frequency region.

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Analytical model of bolted disk–drum joints and its application to dynamic analysis of jointed rotor

Cited by 118 publications

References 25 publications

Numerical and theoretical studies of bolted joints under harmonic shear displacement

Numerical and theoretical studies of bolted joints under harmonic shear displacement

The similitude design method of thin-walled annular plates and determination of structural size intervals

The Nonlinear Dynamics of a Rod-fastened Rotor

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