Rotordynamic analysis of a high thrust liquid rocket engine fuel (Kerosene) turbopump

Jeon, Seong Min; Kwak, Hyun-Duck; Yoon, Suk Hwan; Kim, Jinhan

doi:10.1016/j.ast.2012.03.005

Cited by 20 publications

(8 citation statements)

References 7 publications

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“…Jeon et al [9] created the rotordynamic model of a fuel turbopump and performed the dynamic analysis to predict natural frequencies, critical speeds and instability of the system.…”

Section: Introductionmentioning

confidence: 99%

Rotor-Dynamic Analysis of a Small Steam Turbine Using Finite Element Method

Parlak¹,

Taplak²

2020

MMEP

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Turbine rotors have complex geometry that is difficult to determine their dynamical behaviour. Strong approaches like finite element methods is used to analyze the small steam turbine system to eliminate difficulty of complex geometry problems. Finite element method saves time by allowing reductions in equations beside it is possible to obtain faster solutions by using software that can solve these equations. In this paper, rotor-dynamic analysis of a small steam turbine rotor with certain geometrical and mechanical properties was performed and critical speeds, modal shapes and Campbell diagram of the system was obtained by using FEM based Dynrot software.

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“…Jeon et al [9] created the rotordynamic model of a fuel turbopump and performed the dynamic analysis to predict natural frequencies, critical speeds and instability of the system.…”

Section: Introductionmentioning

confidence: 99%

Rotor-Dynamic Analysis of a Small Steam Turbine Using Finite Element Method

Parlak¹,

Taplak²

2020

MMEP

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“…They demonstrated that the speed ratio of the high speed to lowspeed shaft in dual-rotors could be used as one of the dual-rotor system design parameters. Jeon et al [12] performed a full rotor dynamic analysis for a high thrust liquid rocket engine fuel turbo pump using finite element method. They found out that the rear bearing stiffness was the most important parameter for the critical speed and instability, because the first vibration mode of the rotor was turbine side shaft bending mode.…”

Section: Introductionmentioning

confidence: 99%

On The Finite Element Modeling Of Turbo Machinery Rotors In Rotor Dynamic Analysis

Jalali¹,

Nouri²,

Ziaei-Rad³

2018

Progress in Canadian Mechanical Engineering

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In this study, a program based on finite element method is developed for rotor dynamic analysis of gas turbine rotors. In the FE model of the rotors, various minor and major parts of the rotor are modeled using the cylindrical and tapered Timoshenko beam elements and the lateral vibration behavior of the rotor is evaluated. In the paper, the lateral vibration behavior of a certain gas turbine rotor is analyzed using the developed finite element program and coupled lateral-torsional vibration behavior of the rotor is analyzed using 3D finite element model. A good agreement exists between the results obtained from two FE models. Two design models are used for the rotor one of which has 2 bearings and the other one has 4 bearings with specific locations. The effects of the number of the bearings on the critical speeds, operational deflection shapes and unbalance response of the rotor is investigated. It is found that the number of the bearings has significant effect on the first critical speed but slight effect on the second and third critical speeds. It is demonstrated that the number of the bearings can be used as one of the system design parameters.

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“…The most popular approach, which is particularly well-suited for modeling large scale and complicated systems, is the finite element method [12][13][14][15][16][17]. In recent years, several articles have been published addressing full dynamic analyses in numerous types of rotating machineries and have involved complete investigations of the rotordynamic behavior in the respective application and avoid vibration problems [18][19][20][21][22][23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Radial Clearance of a Squeeze Film Damper on the Vibratory Behavior of a Single Spool Gas Turbine Designed for Unmanned Aerial Vehicle Applications

Creci

Balastrero

Domingues

et al. 2017

Shock and Vibration

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This study presents a numerical investigation using the finite element method on the vibratory behavior of a single spool gas turbine designed for unmanned aerial vehicle applications. The shaft of the rotor-bearing system is supported on a front bearing composed of a deep groove ball bearing with a vibration absorber element and a rear squeeze film damper bearing. Three radial clearances for the squeeze film damper were analyzed to determine the best geometric configuration for the rear bearing, considering the rotordynamic performance of the entire system. Whirl speeds and unbalanced system responses were carefully evaluated to determine the best radial clearance for the squeeze film damper. After defining the best radial clearance, a transient analysis was performed to simulate the transition of the system through resonance, and a spectral map is presented to illustrate the vibratory behavior of the system considering the influence of all related important frequencies. The rotordynamic behavior of the system is predicted, and vibration problems are avoided. Its mechanical drawings were released to manufacturing, and the first prototype is in the experimental test phase, thus indicating that the numerical results presented in this study are consistent.

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Rotordynamic analysis of a high thrust liquid rocket engine fuel (Kerosene) turbopump

Cited by 20 publications

References 7 publications

Rotor-Dynamic Analysis of a Small Steam Turbine Using Finite Element Method

Rotor-Dynamic Analysis of a Small Steam Turbine Using Finite Element Method

On The Finite Element Modeling Of Turbo Machinery Rotors In Rotor Dynamic Analysis

Influence of the Radial Clearance of a Squeeze Film Damper on the Vibratory Behavior of a Single Spool Gas Turbine Designed for Unmanned Aerial Vehicle Applications

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