Energy coupling model for femtosecond laser ablation of spiral bevel gears
In the study of femtosecond laser ablation of 20CrMnTi gear material, the two temperature model is used to study the […]
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Spiral bevel gear material and femtosecond laser ablation mechanism
20CrMnTi, commonly used material for spiral bevel gears, is a kind of good carburizing steel with high impact toughness, high
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Comparison and analysis of time-varying meshing stiffness of helical gears
According to the international standard of iso6336-1-2006, the average meshing stiffness of a gear is regarded as the total stiffness
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Total time-varying meshing stiffness of helical gears
According to the above-mentioned time-varying meshing stiffness equation of helical gear, the contact line of helical gear pair is used
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Validation of finite element method for helical gear time varying meshing stiffness
In order to study the time-varying meshing stiffness of helical gears, a three-dimensional model is established by three-dimensional software, and
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Boundary conditions between sliced gears
When calculating the meshing stiffness of helical gear by slicing method, because the tooth surface of helical gear is helical,
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Helical gear contact line
When a pair of helical gears are engaged, the contact line of the two gear surfaces is a straight line
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Gear tooth matrix stiffness
In the process of gear meshing, the time-varying meshing stiffness is mainly related to the meshing force and deformation of
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Establishment of stiffness equation of helical gear under spalling fault
The tooth spalling model is shown in Figure 1, where SH is the depth of tooth spalling, SL is the
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Time varying meshing stiffness principle of helical gear
When the potential energy method is used to solve the time-varying meshing stiffness of spur gear, the meshing stiffness mainly
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Meshing stiffness analysis of time-varying Gears Considering Different spalling shapes
With the rapid development of wind power technology in recent years, improving the working performance of wind turbine is gradually
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Influence of process parameters on gear rolling process
In order to analyze the influence of rolling process parameters on rolling process, orthogonal test method was used to analyze
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Analysis of gear rolling process
The rolling process is divided into four stages: initial feeding stage, gear dividing stage, continuous feeding rolling stage and shaping
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Finite element parameter setting of gear rolling process
According to the characteristics of roll forming process, the finite element analysis model is established, and the process simulation parameters
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Analysis on vibration characteristics of gear transmission system with root crack and bearing compound fault
1) Root crack and inner and outer raceway failure of bearing Figure 1 shows the frequency domain diagram of bearing
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Comparison of vibration characteristics of gear transmission system under different conditions
As shown in figure (a) is the time domain diagram of the displacement and vibration analog signal of the driving
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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 based on helical gear
1.Actual meshing line length of tooth profile In the transmission process of helical gear, the meshing line of tooth profile
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Vibration characteristics of gear pitch error
Single tooth pitch error (1) Time domain characteristics The existence of single tooth pitch error will lead to the problem
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Research on contact degree and unit contact line load based on helical gear
Helical gear is widely used in high-speed and heavy-duty transmission because of its smooth transmission, strong bearing capacity, low noise,
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Time domain and frequency domain characteristic analysis of gear typical machining errors
Gear is the core component in the field of power transmission. It is widely used in automobile, aerospace, ship and
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Typical machining error of gear
Single tooth pitch error Single tooth pitch error refers to the arc length dimension deviation of two adjacent teeth on
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Dynamic model and solution of gear transmission system
At present, there are more researches on the vibration of gear pair under the action of nonlinear excitation, and there
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Calculation formula of standard involute spur gear
Based on the energy method, the relationship between the z-contact stiffness, bending stiffness, shear stiffness, radial compression deformation stiffness and
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Vibration analysis of gear pair with root crack
The vibration response of gear pair with root crack is shown in Fig. 1: there are three abrupt peaks in
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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