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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Frequency domain characteristics of gear profile error and vibration characteristics of bump
Frequency domain characteristics of tooth profile error The tooth profile error mainly acts on the gear meshing frequency energy, and […]
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Research on gear vibration noise of manual transmission
As far as the current research is concerned, the research on the vibration and noise of automobile transmission mainly focuses […]
Scientific
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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Research purpose of gear transmission system fault
As the most widely used power and motion transmission device of mechanical equipment, the mechanical behavior and working performance of […]
Scientific
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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Research status of compound fault of gear transmission system abroad
Kahraman and Singh established a 3-DOF dynamic model. The nonlinear relationship between radial clearance and ruler side clearance of rolling […]
Scientific
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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Research status of compound fault of gear transmission system in China
Domestic scholars have also carried out a lot of research on the compound fault of gear transmission system. Li Ming […]
Scientific
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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Research status of rolling bearing failure mechanism in China
Domestic scholars have also carried out a lot of research on the fault mechanism of rolling bearing. Cao Chongfeng and […]
Scientific
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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Research status of rolling bearing failure mechanism abroad
Rolling bearing is one of the important parts of gear transmission system. The sliding friction between gear shaft and box […]
Scientific
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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Research status of gear root crack in China
Domestic scholars have also carried out relevant research on the root crack fault mechanism. Shao Renping established the gear dynamic […]
Scientific
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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Research status of gear root crack in foreign countries
In the process of gear meshing, the loaded tooth is like a cantilever beam. The pulse cyclic stress on the […]
Scientific
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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Research status of gear transmission system dynamics in China
Domestic scholars have also done related work in the development of gear transmission system. Zhu Qin and Xie Longbai established […]
Scientific
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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Research status of gear transmission system dynamics abroad
Tupin put forward the concept of equivalent meshing stiffness for the first time and established the dynamic model of gear […]
Scientific
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 […]
Scientific
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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Development process of gear transmission system dynamics
Gear transmission system dynamics mainly studies the mechanical behavior of gear transmission motion and power process, including research on dynamic […]
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Theoretical basis of fault diagnosis method for gear transmission system
Gear transmission is an important part of mechanical transmission. It has the advantages of compact structure, high transmission efficiency, long […]
Scientific
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 […]
Scientific
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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Study on bending fatigue of gears abroad
Rad and forouzan et al. Used XFEM extended finite element method to analyze the propagation path of helical gear root […]
Scientific
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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Research status of gear bending fatigue abroad
Lewicki explored the law of fracture and crack generation of two-dimensional gear teeth, and proposed a super safety design concept. […]
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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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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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Research status of gear bending fatigue abroad
Miryam and pedrero et al. Proposed a model which can be used to calculate the bending fatigue stress of gear […]
Scientific
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 […]
Scientific
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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Failure forms and characteristics of gears
In most cases, the failure of gear teeth is the result of damage accumulation. Due to the different manufacturing processes […]
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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 […]
Scientific
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 […]
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
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]