Finite Element Vibration Analysis of Cylindrical Shells Conveying Fluid with Considering Acoustic-Structure Interactions

Jeong, Weui-Bong; Seo, Young Bong; Ahn, Se Jin; Yoo, Wan-Suk

doi:10.1299/jsmec.49.488

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…So researching the vibration noise is the imminence requirement for reducing the electromotor noise [1][2]. In this paper the characteristic of the shell structure is analyzed and improved.…”

Section: Introductionmentioning

confidence: 99%

Research of the shell vibration and radiated noise based on finite element method

Sun¹,

Xu²,

Liu³

2015

Proceedings of the 2015 4th International Conference on Computer, Mechatronics, Control and Electronic Engineering

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Abstract. The electromotor shell is analyzed by the finite element method. The result shows that vibrations of exterior and the top of the shell produce the shell vibration. The rib reinforcement type and the surrounded structure are designed to optimize and ameliorate the prototype structure. Then vibration and noise are analyzed. From the results it can be seen that amplitude at the top in the rib reinforcement type is suppressed effectively, while amplitude in the exterior is large. The surrounded layer in the surrounded structure successfully breaks the bridge of the inner cylinder to the outer cylinder. Then the vibration of electromotor is absorbed by the surrounded layer and the vibration reduces obviously. The acoustic field mean of the surrounded layer is lowest in the three structures, which effectively reduces the radiated noise from the top of the electromotor shell.

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Section: Introductionmentioning

confidence: 99%

Research of the shell vibration and radiated noise based on finite element method

Sun¹,

Xu²,

Liu³

2015

Proceedings of the 2015 4th International Conference on Computer, Mechatronics, Control and Electronic Engineering

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“…In the vibrating machine with variable load such as long distance vibrating conveyer and probability vibrating screen, the loads change greatly and most are shock load and alternate load, which short the life of the vibration motor as power source and vibration source. At the same time the multi-diameter plastoelastic deformation will accelerate the vibration motor failure [1][2][3][4]. Therefore doing the harmonic analysis to rationally design the size and structure is one of the main to solve premature failure in such situations.…”

Section: Introductionmentioning

confidence: 99%

Research on the modality and critical speed in the long axis of the rotor system

Zhao¹,

Xu²,

Bie³

2015

Proceedings of the 3rd International Conference on Mechanical Engineering and Intelligent Systems (ICMEIS 2015)

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The finite-element linear analysis model in the typical rotor system is established by finite element method to analyze the modality and critical speed. The result shows that modes of vibration change greatly with different modalities in the rotor system. Torsion angle of the rotor increases gradually along the rotor axis and it gradually tends to a stable state near the turntable. Three order critical speeds in rotor bearing system are 190 rad/s, 442rad/s and 890rad/s. With the support from rigid support to elastic support, the critical speed greatly reduces.

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“…The electro-magnetic exciting force under the work condition acts on the motor shell and brings the vibration, which forms the sound radiation. Because of the complex shell structure, nowadays the structural vibration and radiation noise are studied by numerical simulation to find the main noise source, which will provide guidance on the shell structural optimization and improvement [1][2]. In this paper the mode analysis of the small electromotor's shell is done by finite element method to solve its natural frequency.…”

Section: Introductionmentioning

confidence: 99%

The Vibration Radiation Noise and Optimized Analysis of the Shell

Meng

Hao

et al. 2014

AMM

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The radiation noise of motor shell vibration during operation is studied by finite element method. Firstly the finite element model is established to calculate the vibration frequency response characteristic. And on this basis the frequency response characteristic of the sound pressure under the work condition is calculated. The result shows that the vibration of the lateral wall and upper wall of the shell produces the radiation noise. And the radiation noise from the lateral wall makes a more significant contribution by comparison. While the method of adding the surrounded structure and stiffener to the shell can effectively reduce the vibration of the lateral wall and upper wall, which can finally reduce the vibration noise by 10dB.

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Finite Element Vibration Analysis of Cylindrical Shells Conveying Fluid with Considering Acoustic-Structure Interactions

Cited by 4 publications

References 8 publications

Research of the shell vibration and radiated noise based on finite element method

Research of the shell vibration and radiated noise based on finite element method

Research on the modality and critical speed in the long axis of the rotor system

The Vibration Radiation Noise and Optimized Analysis of the Shell

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