Stress intensity factor and J-integral of helical gear crack
The finite element software is used to simulate the helical gear with three-dimensional cracks, and the values of stress intensity […]
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helical gear
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Stress intensity factor of helical gear root crack and influence of J-integral simulation length
In order to study the effect of crack length on stress intensity factor and J-integral, the above semi elliptical initial […]
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Stress intensity factor of helical gear root crack and influence of J-integral simulation load
After the three-dimensional model of the gear is established, the material used in gear simulation is 17CrNiMo6, and then the […]
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The helical gear model with initial crack is established
In order to analyze the three-dimensional crack model of helical gear root, a pair of three-dimensional helical gear models need […]
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Prediction of crack stress intensity and fatigue life of helical gears
According to the measured value of stress intensity factor, kmax and Kmin can be obtained, and the range of stress […]
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Stress intensity factor method for helical gear crack
If the stress state of the crack and the displacement direction of the crack surface are taken as the classification […]
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Understanding Helical Gear Design
Helical gear is a type of gear used in a variety of applications where smooth operation, high speed, and/or heavy […]
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J-integral theory of helical gear crack
Under the elastic-plastic condition, the J-integral of helical gear crack describes the stress and stress field at the crack front […]
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Calculation and analysis of stress intensity factor and J-integral of helical gear crack
Gear is of great significance to all kinds of mechanical equipment. Its performance may directly affect the service life and […]
Scientific
Dynamic characteristics of ship helical gear after modification
Figure 1 and Figure 2 show the frequency domain diagram of angular acceleration of driven wheel after modification. It can […]
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Nonlinear dynamic model of Marine Helical Gear Considering backlash
Helical gears are meshed at the same time in the process of meshing. When studying the dynamic problem of gear […]
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Calculation results and analysis of helical gear
Transmission error is an important index of gear transmission performance. Transmission error refers to the difference between the actual position […]
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Mechanism of tooth surface distortion in machining helical gear with profile modification
Worm machining helical gear is mainly realized by changing the center distance between cutter and gear along the tooth width […]
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Improvement of tooth surface distortion in machining helical gear with profile modification
As shown in Fig. 1, the tooth surface of the modified helical gear obtained by changing the center distance is […]
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Definition of twist coefficient of tooth surface in machining helical gear with profile modification
The phenomenon of tooth surface twist refers to the torsion of tooth surface along the direction of tooth width. As […]
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Derivation of tooth surface equation of helical gear with profile modification
Worm or hob machining helical gear coordinate system is shown in the figure, S1 is worm or hob coordinate system, […]
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Transient dynamic analysis results of marine helical gear
In the process of helical gear meshing, because the hardness of the gear shaft is higher than that of the […]
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Time varying load torque of marine helical gear driven wheel
The MNF file generated in ANSYS is used to replace the ring gear on the wheel hub, that is to […]
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Research on dynamic characteristics and profile modification of marine helical gears
The dynamic characteristics of marine gearbox transmission system directly affect the fatigue life of gear and the transmission efficiency of […]
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Finite element quasi static contact analysis method for helical gears
The mesh quantity and quality of the finite element model directly affect the speed and accuracy of the calculation results. […]
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3D geometric model of helical gear
Taking the gear pair in gear parameters as an example, the three-dimensional geometric model of four groups of gear pairs […]
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Distortion mechanism and meshing performance of helical gears with profile modification
Gear is an important basic part of industrial equipment. With the development of modern industrial technology, higher requirements are put […]
Scientific
Finite element model of marine helical gear with backlash
In the process of helical gear transmission, the tooth surface contact deformation is caused by sudden change load, and the […]
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Finite element analysis on quenching process of transmission helical gear
In the quenching process of automotive transmission helical gear, the control of temperature, stress and thermal deformation has always been […]
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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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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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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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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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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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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 […]
Scientific
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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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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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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Research prospect of high speed helical gear transmission system for electric vehicles
Although the vibration characteristics of high-speed helical gear transmission of an electric vehicle reducer are studied, some practical conclusions are […]
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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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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, firstly, the time-varying meshing stiffness […]
Scientific
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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Tooth surface modification design of high speed helical gear transmission vibration tooth surface modification
Dynamic modeling is the basis of simulation analysis. The simulation model of high-speed helical gear transmission system of an electric […]
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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 […]
Scientific
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 […]
Scientific
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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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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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 […]