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, […]
Scientific
News
Research direction of transmission gear vibration and noise in China
In recent years, the accuracy of test equipment has been improved continuously, and the development of simulation software is becoming
News
Main research contents of gear transmission system fault
According to the results of the research review, this paper takes the gear transmission system as the research object, aiming
Scientific
Helical gear contact line
When a pair of helical gears are engaged, the contact line of the two gear surfaces is a straight line
News
Research on vibration and noise of transmission gears in China
With the maturity of simulation technology, the research of transmission vibration and noise begins to rely on the aid of
Scientific
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
Scientific
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
News
Research status of transmission vibration and noise in China
China started to pay attention to transmission vibration and noise relatively late, and the early main direction focused on the
News
Research direction of transmission gear vibration and noise abroad
With the development of sound radiation theory, the research on sound radiation of transmission case is more in-depth abroad. J.
Scientific
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
Scientific
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
News
Research on vibration and noise of transmission gears abroad
Recently, with the improvement of research level and the progress of transmission vibration and noise research related technology, foreign scholars
News
Research status of transmission gear vibration noise
At present, great attention has been paid to the control and research of transmission vibration and noise at home and
Scientific
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
News
Research status of transmission gear vibration and noise abroad
Transmission vibration and noise have been studied abroad for many years, and some remarkable achievements have been made. First of
Scientific
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
News
Practical application field of transmission gear
With the rapid development of China’s economy, the proportion of automobile in urban construction, resource exploitation, transportation and daily travel
Scientific
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
News
Prospect of research on fault vibration characteristics of gear transmission system
A series of research work is carried out on the influence of typical faults such as root crack and bearing
Scientific
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
Scientific
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
News
Fault vibration characteristics of gear transmission system
Taking the typical fault vibration characteristics of gear transmission system as the research object, the time-varying meshing stiffness of gear
News
Dynamic model of gear-rolling bearing system
Taking the gear bearing transmission system as the research object, the dynamic model of the gear rolling bearing system with
Scientific
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
News
Gear root crack and bearing rolling element fault
The figure shows the frequency domain diagram of bearing 1 and bearing 3 when root crack and raceway fault occur
Scientific
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
News
Gear root crack and bearing inner raceway fault
The figure shows the frequency domain diagram of bearing 1 and bearing 3 when root crack and raceway fault occur
Scientific
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
News
Gear root crack and bearing outer raceway fault
The figure shows the frequency domain diagram of bearing 1 and bearing 3 when root crack and outer raceway fault
Scientific
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,
Scientific
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
News
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
News
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
News
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
News
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
News
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
News
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
News
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
News
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
News
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
News
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
News
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
News
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
News
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
News
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
News
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.