Modal sensitivity of three-dimensional planetary geared rotor systems to planet gear parameters

Tatar, Ali; Schwingshackl, Christoph W.; Friswell, Michael I.

doi:10.1016/j.apm.2022.09.021

Cited by 10 publications

(9 citation statements)

References 72 publications

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“…The influence of tooth clearance on the gear vibration response is obtained via the phase plane diagram and the FFT spectrum diagram. In 2020, Tatar et al [98] used a three-dimensional dynamic model to study the influence of the parameters on the dynamic response of planetary gear rotor systems, including the number of planetary gears, planetary gear mass, gear meshing stiffness, planetary gear speed, etc. Figure 13 shows a schematic diagram of the planetary gear-rotor system.…”

Section: Vibration Characteristicsmentioning

confidence: 99%

Research Progress on the Dynamic Characteristics of Planetary Gear Transmission in a Non-Inertial System

Gao

Wang

2023

Machines

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Planetary gear systems have many advantages over other gear systems. Previous studies on its dynamic characteristics mostly used Earth as the reference system, which is inconsistent with the actual working conditions of many planetary gear systems, such as aircraft maneuvering, vehicle movement changes, etc. By analyzing representative research papers, this study summarizes the lumped-parameter, finite element, and rigid–flexible coupling models commonly used in studying the traditional dynamic characteristics. Then, the research status of gear–rotor and planetary gear systems in inertial and non-inertial systems is summarized. The research progress of load characteristics, vibration characteristics, and vibration control of the traditional planetary gear system is summarized. Finally, some suggestions for future development are put forward. There are a few studies on the non-inertial dynamics of planetary gear systems. The three analysis models have distinct characteristics and applications but can all be used in non-inertial systems. The dynamic analysis method of non-inertial rotor systems can be combined with the dynamic study of gear systems. It is of practical significance to study the non-inertial dynamic characteristics of planetary gear systems. Scholars can refer to the non-inertial dynamic research of the gear–rotor system, select the analysis model according to the needs, and continue to study the dynamic characteristics of the planetary gear system under the non-inertial system.

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Section: Vibration Characteristicsmentioning

confidence: 99%

Research Progress on the Dynamic Characteristics of Planetary Gear Transmission in a Non-Inertial System

Gao

Wang

2023

Machines

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“…The compliance of the output shaft is computed by evaluating the system's resonance frequency. Reference [29] conducted a parameter analysis to investigate the influence of PGT design parameters on the overall modal behavior of PGT rotor systems. A three-dimensional dynamic model of a PGT rotor system is utilized to perform modal sensitivity analysis.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Analysis of Multi-Scale and Rayleigh Approaches in Capturing Eigenfrequencies and Mode Shape Evaluation in Planetary Gear Transmission Systems of Medium and Heavy Trucks

Mabrouk,

Gao,

Yan

et al. 2024

Machines

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Within planetary gear transmissions (PGTs), mode shapes and eigenfrequencies hold a crucial significance in operational reliability and efficacy. Mode shapes explain the unique motion patterns inherent in PGT systems. Conversely, eigenfrequencies describe the inherent frequencies at which PGT systems undergo vibration or oscillation upon exposure to external forces or disruptions. This research paper presents a comprehensive investigation into the dynamic behavior of a three-stage PGT utilized in medium and heavy trucks. This study introduces the Rayleigh energy method to assess system dynamics, revealing a bounded Rayleigh quotient related to the highest related eigenvalue. Then, this study delves into eigenfrequencies and the mode shape behavior of the adopted PGT model. The eigenfrequencies are identified as encompassing diverse vibrational modes of central components and planet gears. Moreover, a multi-scale analysis of the adopted PGT model is presented by deriving matrices for mass, bearing stiffness, and mesh stiffness. Comparisons with the Rayleigh energy method demonstrate the new approach’s efficiency, exhibiting a low margin of error in the determination of eigenfrequencies. This investigation also highlights the alignment of identified mode shapes with the established literature, detailing the multi-scale approach’s minor deviation in mode shape determination compared to the Rayleigh energy method.

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“…They found the approximate linear relationships between the sun gear positions and the long planet vibrations. Tatar et al [13] carried out a modal sensitivity analysis of a PGS. They presented the relationships between the planet gear geometrical parameters and the global modal characteristics in the system.…”

Section: Introductionmentioning

confidence: 99%

Vibration Analysis of the Double Row Planetary Gear System for an Electromechanical Energy Conversion System

Li,

Xu,

Liu

et al. 2024

Lubricants

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Electromechanical energy conversion systems (EECSs) are widely used in vehicles to combine the double-row planetary gear system (DRPGS) with high transmission efficiency and high-performance motors. The integrated structure of the ring gear and motor rotor have put forward higher demands for the vibration performance of the DRPGS. This paper establishes a multibody dynamic model of the DRPGS for an EECS. Based on the kinetic relationship between the gear pairs and bearing components, the dynamic equations of the DRPGS are derived. The DRPGS model is simulated under different operating conditions. The results are compared to reveal the relationships between the system vibration and the operating speed and load torque. The typical conditions are selected to study the effectiveness of the structural parameters in reducing the DRPGS vibrations. The structural parameters, including the bearing clearance, the ball numbers, the gear tooth modification amount, and length, are comprehensively discussed. Several suggestions for the low-vibration design of the DRPGS for the EECS are provided.

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Modal sensitivity of three-dimensional planetary geared rotor systems to planet gear parameters

Cited by 10 publications

References 72 publications

Research Progress on the Dynamic Characteristics of Planetary Gear Transmission in a Non-Inertial System

Research Progress on the Dynamic Characteristics of Planetary Gear Transmission in a Non-Inertial System

A Comparative Analysis of Multi-Scale and Rayleigh Approaches in Capturing Eigenfrequencies and Mode Shape Evaluation in Planetary Gear Transmission Systems of Medium and Heavy Trucks

Vibration Analysis of the Double Row Planetary Gear System for an Electromechanical Energy Conversion System

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