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Dynamic Response Computation of a Wind Turbine Gearbox Under Variable Speed Conditions and its Experimental Validation
PurposeComputation of dynamic response of wind turbine gearbox (WTG) under variable speed conditions is challenging as the mesh stiffness periods...
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Modelling and Analysis of Internal Excitation of Cracked Spur Gear Considering Effects of Tooth Errors
Time-varying mesh stiffness (TVMS) and gear transmission errors are the main internal excitations in the gear meshing process. How to establish an...
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An efficient analytical approach to assess root cause of nonlinear electric vehicle gear whine
Noise, vibration, and harshness (NVH) issues pose considerable challenges for electric vehicle powertrain engineers. Gear vibrations generate an...
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Meshing characteristics of spur gear pairs with tooth modification under different assembly errors and sensitivity analysis for impact factors
Assembly errors may change contact state of gear pairs, then induce failure and vibration. To reveal the effects of assembly errors and tooth...
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A novel analytical method for mesh stiffness calculation of helical gears with tooth profile modification
Gear tooth profile modification can compensate for mesh interference and reduce the mesh impact and transmission error of helical gear system. The...
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Early damage detection in planetary gear transmission in different operating conditions
Planetary gear transmissions are sensitive to various running environmental factors. These external conditions keep these systems often subjected to...
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Dynamic characteristics of gear-rotor system with gear eccentricity and wear fault
Due to installation errors and poor lubrication conditions, the gear system has both eccentricity and wear fault. The eccentricity effect of the gear...
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Effect of Crack Defect of a Spur Gear System with Time-Varying Friction and Dynamic Backlash on Vibration Characteristics and Its Experimental Research
PurposeThe vibration characteristics of gear transmission systems with a fault can be influenced by nonlinear factors. To obtain accurate fault...
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Double-skin façade simulation with computational fluid dynamics: A review of simulation trends, validation methods and research gaps
Dynamic simulation of a double-skin façade (DSF) with computational fluid dynamics (CFD) can be challenging due to the lack of validated models and...
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Nonlinear Distribution of the Gearbox Dynamic Model Including Tooth Cracks
Gearboxes are a widely used component in the industry due to their motion and power transmission flexibilities in compact structures. Lots of work...
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Nonlinear dynamic analysis of helical gear-rotor-bearing coupled system based on bearing load calculation with TRB clearance
Based on Hertz contact deformation theory, the load distribution of roller and bearing load can be obtained with the consideration of rotating speed...
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Model based diagnostic tool for detection of gear tooth crack in a wind turbine gearbox under constant load
Dynamic modelling of wind turbine drive-train system (WTDS) is important to analyse the behaviour of the vibration and load sharing characteristics...
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Vibration response analysis of a gear-rotor-bearing system considering steady-state temperature
Thermal effect is a crucial factor leading to failure of gear system. However, the lack of comprehensive nonlinear dynamics model limits the further...
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An Improved Mesh Stiffness Analytical Model Considering Center Distance Variation Caused by Shaft Misalignment
Shaft misalignment is a common installation error of gear transmission system, which changes the meshing stiffness and increases the risk of...
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Research on nonlinear characteristics of herringbone planetary gear transmission system considering double-sided meshing impact
Aiming at the problem of the increase of vibration and noise caused by the double-sided meshing impact of herringbone gears. A dynamic model of...
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Dynamic Analysis of Ravigneaux Planetary Gear Set with Floating Sun Gear
Ravigneaux planetary gear set (RPGS) is widely used in transmission systems. The RPGS studied in this paper consists of two ring gears, a...
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Modelling, Simulation and Defect Diagnosis of an Epi-cyclic Gear
Gears are important part of rotating machineries for power transmissions. Faults in gear of machineries can lead to failure of machineries. It is...
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Effect of Input Torque on the Modulation Sidebands of Planetary Gears in a Wind Turbine Gearbox Under Gravity Excitations
Planetary gears are the main components of the wind turbine gearbox (WTG). In the recent investigations of WTG, it has been found that the gravity of...
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Nonlinear dynamic behaviour and severity of lightly loaded gear rattle under different vibro-impact models and internal excitations
This investigation comprehensively compared the elastic contact and the modified stiff impact models, aiming for the backlash-induced nonlinear...
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Research on the time-varying mesh stiffness and dynamic characteristics of steel–POM gear pair with off-line meshing
Plastic gears have been widely used in fields such as instruments, meters, and automotive electronics. In particular, metal–plastic gear pairs are...
