Dynamic Effects of the Interference Fit of Motor Rotor on the Stiffness of a High Speed Rotating Shaft

Chen, Shin-Yong; Kung, Chieh; Liao, Te-Tan; Chen, Yen-Hsien

doi:10.1139/tcsme-2010-0015

Cited by 9 publications

(5 citation statements)

References 13 publications

(11 reference statements)

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“…The detailed derivations can be referred in [18]. With zero initial conditions, the displacement response evaluated in frequency domain is expressed as Fig.…”

Section: M€ X X(t)zkx(t)~f(t) ð2þmentioning

confidence: 99%

“…The accuracy of the results was yet to be verified. Chen [16][17][18] indicated that the overall stiffness of a spindle was considerably influenced by the fitted rotor. The natural frequencies tend to increase with the rotor mounted on the shaft by interference fit.…”

Section: Introductionmentioning

confidence: 99%

“…This study is original in that the rotor and the shaft are assembled with interference fit and that contact elements are also introduced to modeling the behavior between the rotor and the shaft. The approach is an application to design phase rather a posterior improvement proposed in [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dynamic Analysis of a Rotary Hollow Shaft With Hot-Fit Part Using Contact Elements With Friction

Chen

Kung

Hsu

2011

Transactions of the Canadian Society for Mechanical Engineering

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One of the key factors in designing a motor built-in high speed spindle is to assemble the motor rotor and shaft by means of hot-fit. Presented in this paper is a study of the influence of a hot-fit rotor on the local stiffness of the hollow shaft. Dynamic analyses of the rotor-hollow shaft assembly using contact elements are conducted. The normal contact stress state between the rotor and the hollow shaft is obtained through the use of contact elements with friction effects included. The normal contact stress, considered as the pr-stress between the rotor and the hollow shaft, is then adopted for subsequent modal analyses. In this study, the modal analysis results are verified by a modal testing experiment. The percent errors of the first natural frequency and the second natural frequency are down to about 0.58% and 0.79%, respectively.

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“…The detailed derivations can be referred in [18]. With zero initial conditions, the displacement response evaluated in frequency domain is expressed as Fig.…”

Section: M€ X X(t)zkx(t)~f(t) ð2þmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dynamic Analysis of a Rotary Hollow Shaft With Hot-Fit Part Using Contact Elements With Friction

Chen

Kung

Hsu

2011

Transactions of the Canadian Society for Mechanical Engineering

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“…The results of calculation and analysis provide theoretical basis and data for the optimal design and control of the motor. [18][19][20] The structure of motor…”

Section: Introductionmentioning

confidence: 99%

Analysis of the rotor dynamics characteristics of multi-degree-of-freedom permanent magnet synchronous motor

Chen

Yue

et al. 2019

Journal of Low Frequency Noise, Vibration and Active Control

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The spherical shell rotor is contained in the multi-degree-of-freedom permanent magnet synchronous motor. When the rated speed of motor is close to the critical speed, the motor will generate multiple resonances, which will affect the normal operation of the motor. The motor rotor must pass through the first-order critical speed and work at the safety range between 1-order and 2-order critical speed. According to the dynamic characteristics of rotor system, a mathematical model of rotor under free state is established, and the result between finite element and analytical methods is comparison. The influence of rotor gyroscope effect on critical speed is analyzed, and the finite element analysis of whether the rigidity of rotor material affects the critical speed is also carried out. The relationship between bending modal and deformation displacement is tested under different rigidity conditions and the stator deformation caused by rotor rotation is analyzed when the stator is filled with different liquids. The relationship between the rotational speed and the amplitude of the spherical rotor is verified by experiments, and the corresponding rules are summarized. The results of the simulation and analysis are referenced by the optimal design of motor.

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“…General FE contact problems are discussed in Zhang and Wang, 6 where translational joint contact with friction force is studied in 2D, and in Nejati et al, 7 where internal friction of contact on a cracked region is studied. Many publications that consider the use of traditional beam or similar 1D elements such as Santos et al 8 and Chen et al 9 typically present a casedependent solution for shrink-fitted sleeve-shaft contact. The solution is mainly about tuning the sleeve material properties, as based on the theory developed.…”

Section: Introductionmentioning

confidence: 99%

Shrink-fitted joint behavior using three-dimensional solid finite elements in rotor dynamics with inclusion of stress-stiffening effect

Sikanen

Sopanen

2018

Advances in Mechanical Engineering

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In this article, the contact behavior of a shrink-fitted joint in a rotor assembly at different spin speeds is studied, using the three-dimensional solid finite element approach. A custom frictionless contact model is proposed and extensively tested by means of simulation. The theory for solving pre-stressed damped eigenvalue problem is presented and implemented, and the results are presented in Campbell diagram form. Two sample rotor assemblies are studied. In addition, experimental modal analysis results of a shrink-fitted joint with various interferences are presented and numerically studied. The reduction of the interference of the shrink-fitted joint due to centrifugal forces at high-speed operation as well as the contact status are updated at each rotational speed step. The inclusion of stress-stiffening effect is studied in detail. The comparison of the Campbell diagram results with the results obtained using a commercial finite element software (Ansys) shows a good agreement.

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Dynamic Effects of the Interference Fit of Motor Rotor on the Stiffness of a High Speed Rotating Shaft

Cited by 9 publications

References 13 publications

Dynamic Analysis of a Rotary Hollow Shaft With Hot-Fit Part Using Contact Elements With Friction

Dynamic Analysis of a Rotary Hollow Shaft With Hot-Fit Part Using Contact Elements With Friction

Analysis of the rotor dynamics characteristics of multi-degree-of-freedom permanent magnet synchronous motor

Shrink-fitted joint behavior using three-dimensional solid finite elements in rotor dynamics with inclusion of stress-stiffening effect

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