scholarly journals Design and Numerical Simulation using Vibration Analysis for the Detection and Reduction of Failures of the Gear Pair of the Differential System of a Powertrain

2021 ◽  
Vol 12 (10) ◽  
pp. 1-5
Author(s):  
Cristhoper E. Jaimes Martínez ◽  
J. Flores Méndez ◽  
Gustavo M. Minquiz ◽  
Pablo Gutiérrez Cruz ◽  
Fernando Medina Pérez ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Differential System ◽  
Vibration Analysis ◽  
Gear Pair

Study on Rubbing Failure Between Fan Vanes and Spacer Ring of a Turbo-Fan Engine

2010 ◽  
Author(s):  
Dayi Zhang ◽  
Meng Chen ◽  
Jie Hong ◽  
Miansheng Dou
Keyword(s):  
Numerical Simulation ◽  
Traveling Wave ◽  
Vibration Analysis ◽  
Element Model ◽  
Vibration Test ◽  
Simulation Techniques ◽  
Wave Resonance ◽  
Stator Vane ◽  
Improvement Measures ◽  
Simulation Results

The objective of the present work is the study of the rubbing failure between fan stator vanes and the spacer ring of a Turbo-Fan Engine. The similar failures appeared 2 times in this small turbo-fan engine. The failure mechanism is analysed, in which kinds of factors that could influence the clearance between the rotor and the stator are taken into account. The failure is analysed by means of both test characterizations and numerical simulation techniques. Firstly, a finite element model of the spline joints is used to calculate the stiffness of the fan-rotor considering the influence of locating surface clearance. Secondly, a traveling wave vibration analysis of the spacer ring is performed, as well as the analysis of the stator vane. Finally, the analysis of the vibration test data is performed. The test characterizations and numerical simulation results indicate that, for Engine-1, the large 2×vibration shows a rotor misalignment, at the same time the traveling wave resonance of the spacer ring occurs, these cause the appearance of the failure. For Engine-2, the failure is caused by the rotor unbalance vibration. Some improvement measures are proposed to avoid this failure.

Methodology for Designing Low-Vibration Structures for Movable Mechanisms

1999 ◽  
Author(s):  
Shinobu Yoshida ◽  
Yoshiko Kawabe
Keyword(s):  
Numerical Simulation ◽  
Vibration Analysis ◽  
Simulation Method ◽  
Optimization Method ◽  
Structural Vibration ◽  
Simulation Methods ◽  
Analysis Method ◽  
Module Design ◽  
Numerical Simulation Methods ◽  
Design Steps

Abstract The methodology dealt with here is the way how to use numerical simulation methods corresponding to different design steps. The methods are a budget simulation method for mechanical specification design step, a structural vibration analysis method using a finite element method and an optimization method. The latter two methods are used for the module design and parts design steps. Case studies reviewing the works of authors show the effectiveness of the methodology.

A Method for Analyzing Electromagnetic-Force-Induced Vibration and Noise From Motors

1999 ◽  
Author(s):  
Koki Shiohata ◽  
Kanako Nemoto ◽  
Takashi Kobayashi
Keyword(s):  
Numerical Simulation ◽  
Boundary Element Method ◽  
Dimensional Analysis ◽  
Electromagnetic Force ◽  
Vibration Analysis ◽  
Noise Analysis ◽  
High Accuracy ◽  
Exciting Force ◽  
Structural Vibration ◽  
Modal Resonance

Abstract Electromagnetic force calculated by 2-dimensional analysis is transformed into exciting force for 3-dimcnsional structural-vibration analysis. And a procedure for modeling a vibrating structure is developed. Furthermore, a space-modal-resonance criterion, which relates electromagnetic force to structural vibration or noise, is introduced. In the structural-vibration analysis, the finite clement method is used; and in the noise analysis, the boundary element method is used. And vibration and noise of an induction motor are evaluated by using this criteria. Consequently, high-accuracy modeling is achieved and calculated noise almost completely coincides with that measured by experiments. And it is clarified that the-space-modal resonance criterion is effective on numerical simulation.

The Elastohydrodynamic Lubrication Analysis of Composite Material Gear

2013 ◽  
Vol 706-708 ◽  
pp. 1622-1626
Author(s):  
Xiao Xin Fu ◽  
You Qiang Wang
Keyword(s):  
Numerical Simulation ◽  
Composite Material ◽  
Simulation Analysis ◽  
Elastohydrodynamic Lubrication ◽  
Gear Pair ◽  
Oil Lubrication ◽  
Film Pressure ◽  
Oil Film ◽  
Oil Film Pressure

The composite material gear was manufactured with modified PEEK materia1.The transient EHL solution of composite material gear was obtained by numerical simulation analysis in oil lubrication conditions.The simulation result of the composite material gear was compared with that of the steel-steel gear. The results show that the meshing oil film between composite material gear pair is thicker than that between steel-steel gear and the maximum oil film pressure in the meshing point between composite material gear is lower than that between steel-steel gear in the same conditions.

Numerical Simulation Method of Track Irregularities Based on Secondary Filtering

2014 ◽  
Vol 1008-1009 ◽  
pp. 1525-1529
Author(s):  
Bao Shan Xiang ◽  
Xing Han ◽  
Xue Wei Wang
Keyword(s):  
Numerical Simulation ◽  
Vibration Analysis ◽  
Simulation Method ◽  
External Excitation ◽  
Coupling Vibration ◽  
Filtering Method ◽  
Numerical Simulation Method ◽  
Simulation Results ◽  
The U.S ◽  
Track Irregularities

Track irregularities are the only external excitation in vehicle-bridge coupling vibration analysis and therefore the numerical simulation method of track irregularities is very important. The U.S. frequency spectrum is usually employed to simulate the track irregularities in China. In this paper, the secondary filtering method is introduced to the simulation of track irregularities and MATLAB programing is employed to simulate an example. Based on the comparison of the simulation results and the objective function, it is indicated that the simulation result is reliable and the method is feasible.

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