Experimental study on dynamic strain measurement of gear tooth root
The gear tooth root dynamic strain measurement experiment is carried out on an industrial standard gearbox, which is installed on […]
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Analysis and calculation of meshing impact of helical gear transmission
In the whole meshing area of gear pair, the meshing point of error free gear transmission is always on its
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Effect of gear pitting on friction excitation
The Coulomb friction model with time-varying friction coefficient is given and introduced into the dynamic model of gear system, in
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Analysis on vibration characteristics of high speed helical gear transmission system of electric vehicle
Taking the high-speed helical gear transmission of an electric vehicle reducer as the research object, the vibration characteristics of the
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Influence of gear pitting on stiffness excitation
In the tooth surface pitting fault simulation model, it is assumed that all the centers of pitting are distributed on
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Analysis of gear vibration characteristics under the excitation of other factors
(1) At present, there are many methods to calculate the meshing stiffness of gears. For spur gears, helical gears and
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Friction excitation of gear system
For the established dynamic model of gear system, the influence of sliding friction on tooth surface is considered in the
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Vibration characteristics of gears excited by other factors
Gear transmission system is a complex system with multiple excitation factors coupling each other. Considering all the internal and external
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Gear model of early tiny pitting failure
In this experiment, the tooth surface pitting only occurs on one tooth surface of the driven gear, and the tooth
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Analysis of gear vibration characteristics under meshing impact excitation
In the actual process of gear meshing transmission, due to the manufacturing error and tooth deformation of the gear, the
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Innovation of vibration characteristics of reducer speed integrated gear based on harmonic balance method
Through the dynamic signal analysis system, the vibration characteristics of the gear system are tested, and the vibration states of
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Finite element method for calculating vibration characteristics of gears excited by time-varying meshing stiffness
In the early research, due to the limitation of computational resources and methods, the time-varying meshing stiffness of gears can
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Vibration characteristics of reducer variable speed integrated gear based on harmonic balance method
In this paper, the parametric vibration without backlash and the nonlinear vibration with backlash are studied respectively. The transmission system
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Material mechanics calculation method of gear vibration characteristics under time varying meshing stiffness excitation
The meshing stiffness of gears refers to the ability of gear teeth to resist elastic deformation under the action of
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Impact of Input Speed on Vibration of Reduced-Variable Integrated Gear Vibration Test
According to the experiment, the system load is set at 5N.m, the input speed is 1120 r/min, 840 r/min, the
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Research status of high speed helical gear transmission system for electric vehicles at China and abroad
Due to its advantages in efficiency, service life and application range, gear transmission has become an indispensable part of the
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Vibration Test of Reduced-Variable Integration Gear Load Torque Effect on Vibration
According to the test in experiment 2, the speed of three-phase variable frequency speed motor is set at 560 r/min
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Scheme of high speed helical gear transmission system for electric vehicle
As the most commonly used motor centralized drive transmission system of electric vehicles, the motor is directly connected with the
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Harmonic frequency components in vibration test of reducer variable speed integrated gear
When the input speed is 560 R / min, the theoretical frequency component of gear vibration response is calculated by
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High speed helical gear transmission of electric vehicle
The transmission system of automobile is one of the core competitiveness of automobile. The transmission system of traditional fuel vehicle
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Gear dynamic response modeling case
When there is pitting on the gear surface, the pitting will reduce the time-varying meshing stiffness and the sliding friction
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Meshing stiffness calculation of contact deformation of gear meshing point
Due to the contact stress during gear meshing, contact deformation will occur. The contact deformation δcb can be calculated according
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Test scheme of vibration test for reducer variable speed integrated gear
The specific implementation process of vibration experiment is as follows: (1) Make preparations before the formal experiment. First, check that
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Construction of vibration test platform for reducer variable speed integrated gear
The influence of different gear parameters on the vibration characteristics of the reducer variable speed integrated gear and the sensitivity
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Dynamic response calculation of gear tooth root dynamic strain measurement
The experimental platform for measuring the dynamic strain of gear tooth root is built, and the dynamic strain of gear
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Influence of load torque on gear vibration state
Figure a) shows the influence of load torque T2 on the rattling state of gears. It can be seen from
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Meshing stiffness calculation of elastic additional deformation of gear tooth root
Since the early computer was not widely used, the method based on mechanics of materials to calculate the time-varying meshing
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Research on Modeling and Simulation of early micro pitting failure of gears
In the past research on the dynamics of gear system with pitting corrosion fault, the main concern is that the
Scientific
Meshing impact mechanism of helical gear
In the process of gear transmission, there is a deviation between the actual base pitch and the theoretical pitch due
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Analysis and calculation of meshing impact of helical gear transmission
In the whole meshing area of gear pair, the meshing point of error free gear transmission is always on its
Scientific
Influence of time-varying meshing stiffness on gear vibration state
The ratio of the amplitude Kr to the average value K0 in the formula is defined as the amplitude coefficient
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Comparative analysis of calculation results of helical gear time-varying meshing stiffness
In order to compare the time-varying meshing stiffness results obtained by the three calculation methods of material mechanics method, finite
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Meshing stiffness calculation of gear bending deformation and shear deformation
In the figure, the gear teeth are divided into several segments by the idea of integral, and the shadow part
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Experimental study on gear pitting
The gear pitting failure is studied experimentally. Tan CK et al. Accelerated the occurrence of gear pitting failure by using
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Influence of eccentricity on gear vibration state
The variation law of gear vibration state with the eccentricity of reducer variable speed integrated gear is studied. Figure a)
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Research on gear friction excitation
In the past work, the main factors to be considered in the dynamic modeling of gear system with pitting corrosion
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Influence of static transmission error on gear vibration state
Figure a) shows the influence of static error amplitude Er on gear slapping state. With the increase of static transfer
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Research and analysis of gear stiffness excitation
The finite element method is used to verify and calculate the time-varying meshing stiffness of gears. In reference [29], chaari
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Formation and dynamic excitation mechanism of gear integrated meshing stiffness
In the process of transmission of motion and power, gear teeth will have bending deformation, shear deformation and other elastic
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Influence of input speed on gear vibration state
Speed is one of the external load parameters in gear system. Under theoretical conditions, gear slapping behavior will be more
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Comprehensive analysis of the influence of stiffness excitation and friction excitation on gear system response
We discuss the dynamic characteristics of the dynamic response of gears in time domain and frequency domain in three different
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Research on gear stiffness excitation
Gear transmission system is a typical elastic mechanical transmission system, which produces dynamic response under the influence of internal and
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Steady state of gear system based on harmonic balance method
Because the stiffness excitation and error excitation only select the first harmonic, the r = 1 of SSI = 0
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The influence of stiffness excitation and friction excitation on the response of gear system is considered comprehensively
This paper mainly analyzes the case of dynamic response model simulation 3. In this case, the stiffness excitation and friction
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Calculation of gear meshing stiffness for measuring tooth root dynamic strain
Since the gear tooth is simplified as a cantilever beam with variable cross-section, the stress distribution of the gear tooth
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Study on dynamic model of gear system
It is the central task of gear system dynamics to establish accurate dynamic model of gear system. Only by establishing
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Steady state response of gear system based on harmonic balance method
The transmission ratio of the reducer variable speed integrated gear is as follows: Where ε is the eccentricity. The expressions
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Only the influence of friction excitation on the response of gear system is considered
This paper mainly analyzes the case II of dynamic response model, which only considers the influence of the increase of
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Theory of gear meshing stiffness
The comprehensive meshing stiffness of gear is the elastic response of the comprehensive Meshing Effect of each pair of teeth
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Research on simulation model of gear pitting
The tooth surface pitting fault is a common failure form of gear system. In the modeling of gear pitting fault,
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Discrete Fourier transform of nonlinear function of gear clearance in reducer variable speed integrated gear
In the system of equations Si, the coefficient Zi of the steady-state response q is the unknown quantity to be
Scientific
Calculation of time-varying meshing stiffness of healthy gears
According to the energy method, the bending energy, shear energy and axial compression energy stored in gears can be expressed
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There is a high probability of gear pitting failure
When the gear system has tooth profile error, tooth surface roughness is too high, the lubricating oil film is too
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Only the influence of stiffness excitation on the response of gear system is considered
This paper mainly analyzes the dynamic response model simulation case 1. That is to say, only the influence of gear
Scientific
Dynamic response analysis method of gear system
In the analysis methods of gear system dynamic response, time domain signal analysis method is the direct means to study
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Sensitivity of system parameters to gear vibration amplitude
The sensitivity of parameters is very important to the dynamic design and optimization of gear system. There are three commonly
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Time varying meshing stiffness of healthy gears
The time-varying meshing stiffness of gears is an important excitation source of gear vibration. Accurate calculation of the time-varying meshing
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The fatigue pitting of gears is caused by insufficient contact fatigue strength
Gear box is the most commonly used power and motion transmission device in mechanical equipment. Gear transmission has many advantages
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Calculation of time-varying meshing stiffness of pitting gears
In the study of gear tooth surface pitting fault, the main shapes of pitting corrosion are rectangular pitting, elliptical pitting
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Influence of load torque on gear vibration
In addition to the static transmission error, time-varying meshing stiffness and other internal excitation will affect the vibration of the