Vibration analysis of normal gear pair
Figure 1 shows the displacement response of the normal driving wheel in the 𝑦 direction: the time interval between two […]
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Dynamic model of gear pair
In this paper, a pair of involute spur gear pairs are regarded as composed of mass block, spring and resistance
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Time varying meshing stiffness difference of gear pair with root crack
Assuming that the crack fault occurs on the gear teeth of the driving wheel, different types of root crack models
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Time varying meshing stiffness of gear pair with root crack
The root crack will directly change the effective cross-sectional area and moment of inertia of the simplified cantilever model of
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Calculation of comprehensive engagement rigidity of transmission gear
The potential energy obtained by the comprehensive energy method is: Hertz contact potential energy, bending potential energy, shear deformation potential
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Calculation of Flexible Deformation Stiffness of Gear Drive System Base Matrix
When calculating time-varying meshing stiffness of gear pair by energy method, the gear base is assumed to be rigid, while
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Gear drive system bending stiffness, shear stiffness and radial compression stiffness calculation
According to the energy method, the bending potential energy, shear deformation energy and radial compression deformation energy are also stored
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Vibration analysis of gear pair with root crack
Based on the time-varying meshing stiffness of the involute spur gear pair, the dynamic model of the gear pair is
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Calculation of Hertz contact stiffness of gears
When the energy method is used to calculate the time-varying meshing stiffness of gears, it is assumed that the meshing
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Time varying meshing stiffness of normal gear pair
Gear pair is the core component of gear transmission system, and time-varying meshing stiffness is the main excitation source of
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Unit contact line load of helical gear
Calculation of contact line length of helical gear The length of contact line of helical gear has a great influence
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Calculation of engagement length and coincidence degree of helical gears
Actual length of meshing line of tooth profile In the process of gear transmission, the meshing line of tooth profile
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Vibration reduction effect of tooth surface modification on two stage high speed helical gear transmission
In order to test the vibration reduction effect of two-stage high-speed helical gear transmission after modification, and to compare the
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Vibration reduction effect of tooth surface modification on single stage high speed helical gear transmission
In order to test the vibration reduction effect of single-stage high-speed helical gear transmission after modification, the time-varying meshing stiffness
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Effect of tooth surface modification on load distribution of high speed helical gear
The gear contact analysis is carried out by using romax software, and the normal load per unit length of the
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Influence of tooth surface modification on load transmission error of high speed helical gear
In the gear transmission system, the ideal gear will drive according to the constant transmission ratio. However, in practical engineering,
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Influence of tooth surface modification on vibration characteristics of high speed helical gear transmission
Vibration and noise reduction of electric vehicle reducer is an important part of vehicle design, and reasonable tooth surface modification
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Influence of tooth surface modification on vibration characteristics of high speed helical gear transmission
Vibration and noise reduction of electric vehicle reducer is an important part of vehicle design, and reasonable tooth surface modification
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Influence of tooth surface modification on vibration characteristics of high speed helical gear transmission
Vibration and noise reduction of electric vehicle reducer is an important part of vehicle design, and reasonable tooth surface modification
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Vibration characteristics of two stage helical gear transmission under meshing impact excitation
The vibration characteristics of two-stage helical gear drive under meshing impact excitation are further analyzed, and the vibration response of
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Vibration characteristics of high speed helical gear transmission under combined excitation
In order to study the influence degree of two kinds of excitation factors on the system vibration, the vibration speed
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Vibration response of high speed helical gear drive under combined excitation
The obtained time-varying meshing stiffness curve and meshing impact curve are input into the dynamic equation group at the same
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Influence of time varying meshing stiffness amplitude on vibration characteristics of high speed helical gear transmission
In order to study the influence of the amplitude of time-varying meshing stiffness on the vibration characteristics of the system,
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Influence of mean value of time-varying meshing stiffness on vibration characteristics of high speed helical gear transmission
In order to study the influence of the mean value of the time-varying meshing stiffness on the vibration characteristics of
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Vibration response of high speed helical gear driven by time varying meshing stiffness
The time-varying meshing stiffness curve obtained above is input into the dynamic equations to obtain the vibration response of single-stage
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Vibration characteristics of high speed helical gear transmission excited by time varying meshing stiffness
The dynamic model of an electric vehicle reducer is established, and the time-varying meshing stiffness curve and meshing impact curve
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Bending torsion shaft dynamic model of single stage helical gear transmission
Taking a high-speed helical gear transmission of an electric vehicle as the research object, the structure diagram is shown in
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Calculation of meshing impact force amplitude of helical gear transmission
Due to the mass and inertia of the gear, the meshing impact speed will produce meshing impact force. The size
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Calculation of meshing impact velocity of helical gear transmission
From the above analysis, it can be seen that the gear error and the loaded deformation of the gear teeth
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Vibration characteristics of two stage helical gear transmission excited by time varying meshing stiffness
After solving the differential equations, the vibration acceleration of two teeth in each direction is synthesized into “the relative vibration
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Determination of external meshing point position of helical gear transmission
In the figure, OP is the center of the driving wheel, og is the center of the driven wheel, P
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Calculation of time-varying gear meshing stiffness based on improved LTCA
Using the improved LTCA method to calculate the time-varying meshing stiffness of gears is another high-efficiency and high-precision calculation method.
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Meshing stiffness calculation of time-varying gear based on finite element method
With the development of computer technology, the application of finite element method is more and more widely. Abaqus is used
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Experimental study on dynamic response of gear system simulation
Fig. 1 shows the experimental vibration acceleration signals of healthy gear and pitting gear. It can be seen from the
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Dynamic response analysis of gear system
In order to further evaluate the influence of gear pitting failure on the dynamic response of gear system, the meshing
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Influence of meshing impact time on vibration characteristics of high speed helical gear transmission
In order to qualitatively study the influence of meshing impact time on the vibration characteristics of helical gear transmission, the
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Meshing stiffness calculation of gear tooth root dynamic strain
The relationship between the tooth root bending strain and the gear meshing stiffness is deduced. Therefore, the meshing stiffness of
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Vibration response of high speed helical gear transmission under meshing impact excitation
In order to study the vibration characteristics of single-stage helical gear transmission system under meshing impact excitation, the obtained meshing
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Analysis of dynamic strain of gear tooth root
The dynamic strain of tooth root measured by fiber Bragg grating sensor and piezoelectric strain sensor is analyzed. The dynamic
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Calculation method of gear meshing stiffness based on tooth root dynamic strain measurement
According to the definition of mechanics of materials: under the action of external force, the energy stored in elastic body
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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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)