A comparative dynamic analysis of rotor involving three engineering materials applying finite element analysis (FEA) simulation

Mudgala, Sandeep; Seth, Dinesh

doi:10.1016/j.matpr.2021.04.250

Cited by 2 publications

(1 citation statement)

References 29 publications

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“…The analysis of the dynamic characteristics of a machine mainly adopts the methods of experimental modal analysis and (FEM) modal analysis [4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Computational Investigation of Vibration Characteristics Analysis for Industrial Rotor

Aimeur

Menasri

2022

Acta Mechanica Et Automatica

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During the operation of a rotor, various types of vibrations appear in this mechanical system and often limit the performance and endanger the safety of the operation. Therefore, dynamic analysis is essential because precise knowledge of the vibration behaviour is essential to ensure proper operation. This article presents a set of scientific techniques for the modelling and simulation of rotor vibrations. To work out the equations of the vibratory movement of the rotor, we used the energy approach of Lagrange. To achieve this, a model with one blading wheel carried by a shaft supported by two hydrodynamic bearings is chosen basedon the characteristics of the rotor studied (Fan 280 cement draft fan). It is an arduous task to manually ascertain the analytical resolution of the differential equations that characterise the vibratory behaviour of the rotor. The numerical approach employing the finite element method, programmed on the ANSYS software, made it possible to perform the vibration analysis of the rotor. First, the FAN 280 cement draft fan rotor is modelled using SolidWorks 3D software and reverse design using the coordinate measuring machine (CMM) for the design of the fins. Then, the modal characteristics of the fan rotor model were analysed using the finite element analysis (FEA) software ANSYS Workbench. Also, to study the effect of blade wear on critical speeds, the Campbell diagram was obtained. Finally, harmonic analysis was performed to determine the amplitude of the rotor vortex at critical speeds obtained with and without blade wear.

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“…The analysis of the dynamic characteristics of a machine mainly adopts the methods of experimental modal analysis and (FEM) modal analysis [4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Computational Investigation of Vibration Characteristics Analysis for Industrial Rotor

Aimeur

Menasri

2022

Acta Mechanica Et Automatica

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Analysis of Rotor Dynamics Characteristics of Roots Hydrogen Circulation Pump

Lin,

Gao

2023

SAE Technical Paper Series

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<div class="section abstract"><div class="htmlview paragraph">As an important part of the Roots hydrogen circulation pump, the rotor system has a significant impact on the dynamic characteristics of the Roots hydrogen circulation pump. In this paper, the finite element model of the rotor system of the Roots hydrogen circulation pump in the fuel cell hydrogen supply system was built, and the dynamic characteristics of the coupled dual-rotor system were studied. Through the modal analysis of the rotor system, the first six-order natural modes and natural frequencies of the uncoupled single-rotor system and the coupled dual-rotor system were obtained. The harmonic response characteristics of the rotor system were analyzed on the basis of the modal analysis, and the harmonic response characteristic curves of the gear and the edge of the impeller were obtained. The results show that the vibration deformation of the shaft end and the rotor impeller is relatively large, and the vibration response amplitude of the rotor system is the largest when the excitation frequency is close to the first-order natural frequencies. The coupled dual-rotor system exhibits more complex vibration modes compared to the uncoupled single-rotor system, and the response of the active rotor system to the imbalance is more significant. It is recommended to give priority to the machining and installation accuracy of the active rotor system, and avoid the excitation frequency near 980Hz to help improve the stability of the Roots hydrogen circulation pump. The research will provide a basis for the optimal design and vibration reduction research of the Roots hydrogen circulation pump, thereby improving the reliability of the rotors during operation.</div></div>

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A comparative dynamic analysis of rotor involving three engineering materials applying finite element analysis (FEA) simulation

Cited by 2 publications

References 29 publications

Computational Investigation of Vibration Characteristics Analysis for Industrial Rotor

Computational Investigation of Vibration Characteristics Analysis for Industrial Rotor

Analysis of Rotor Dynamics Characteristics of Roots Hydrogen Circulation Pump

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