Nonlinear vibration model of gear transmission
The lumped mass method is used to establish the nonlinear vibration model of single degree of freedom gear transmission as […]
The lumped mass method is used to establish the nonlinear vibration model of single degree of freedom gear transmission as […]
Optimize design variables The multi-stage gear reducer has the characteristics of complex structure. Considering the installation environment and conditions of
The integral time range of solving differential equations is 300tm. In order to solve this problem, it is necessary to
After establishing the mathematical model of the dynamic performance of the multi-stage gear transmission system, the dynamic performance simulation model
Compared with ordinary gear transmission system, multi-stage gear transmission system has many advantages, such as small volume, light weight, high
Because of its unique advantages, planetary gear transmission system has been widely used in industrial and agricultural production, but its
In recent years, with the continuous development of mechanical vibration theory, the research on mechanical system at home and abroad
As a complex sealed rotor system, the theoretical analysis and research of the system are carried out, and the related
Based on the dynamic theory, the planetary gear speed increasing system and the rotor system with contact seal are analyzed
In China, in 1997, Zhang Jianyun et al. Established the dynamic model of 2K-H Planetary Gear Reducer by using the
In foreign countries, in 1999, Jian Lin and Parker R G analyzed the inherent characteristics and free vibration characteristics of
In recent years, with the continuous development of mechanical vibration theory, the research on mechanical system at home and abroad
The main research object is the transmission of a medium-sized commercial truck, which contains six gears, and the fifth gear
In recent years, the accuracy of test equipment has been improved continuously, and the development of simulation software is becoming
According to the results of the research review, this paper takes the gear transmission system as the research object, aiming
With the maturity of simulation technology, the research of transmission vibration and noise begins to rely on the aid of
China started to pay attention to transmission vibration and noise relatively late, and the early main direction focused on the
With the development of sound radiation theory, the research on sound radiation of transmission case is more in-depth abroad. J.
Recently, with the improvement of research level and the progress of transmission vibration and noise research related technology, foreign scholars
At present, great attention has been paid to the control and research of transmission vibration and noise at home and
Transmission vibration and noise have been studied abroad for many years, and some remarkable achievements have been made. First of
With the rapid development of China’s economy, the proportion of automobile in urban construction, resource exploitation, transportation and daily travel
A series of research work is carried out on the influence of typical faults such as root crack and bearing
1) Root crack and inner and outer raceway failure of bearing Figure 1 shows the frequency domain diagram of bearing
As shown in figure (a) is the time domain diagram of the displacement and vibration analog signal of the driving
Taking the typical fault vibration characteristics of gear transmission system as the research object, the time-varying meshing stiffness of gear
As far as the current research is concerned, the research on the vibration and noise of automobile transmission mainly focuses
As the most widely used power and motion transmission device of mechanical equipment, the mechanical behavior and working performance of
At present, there are more researches on the vibration of gear pair under the action of nonlinear excitation, and there
Kahraman and Singh established a 3-DOF dynamic model. The nonlinear relationship between radial clearance and ruler side clearance of rolling
Domestic scholars have also carried out a lot of research on the compound fault of gear transmission system. Li Ming
Domestic scholars have also done related work in the development of gear transmission system. Zhu Qin and Xie Longbai established
The potential energy obtained by the comprehensive energy method is: Hertz contact potential energy, bending potential energy, shear deformation potential
Tupin put forward the concept of equivalent meshing stiffness for the first time and established the dynamic model of gear
Gear transmission system dynamics mainly studies the mechanical behavior of gear transmission motion and power process, including research on dynamic
Gear transmission is an important part of mechanical transmission. It has the advantages of compact structure, high transmission efficiency, long
In order to test the vibration reduction effect of two-stage high-speed helical gear transmission after modification, and to compare the
In order to test the vibration reduction effect of single-stage high-speed helical gear transmission after modification, the time-varying meshing stiffness
Although the vibration characteristics of high-speed helical gear transmission of an electric vehicle reducer are studied, some practical conclusions are
Taking the high-speed helical gear transmission of an electric vehicle reducer as the research object, firstly, the time-varying meshing stiffness
In the gear transmission system, the ideal gear will drive according to the constant transmission ratio. However, in practical engineering,
Dynamic modeling is the basis of simulation analysis. The simulation model of high-speed helical gear transmission system of an electric
Vibration and noise reduction of electric vehicle reducer is an important part of vehicle design, and reasonable tooth surface modification
Vibration and noise reduction of electric vehicle reducer is an important part of vehicle design, and reasonable tooth surface modification
Vibration and noise reduction of electric vehicle reducer is an important part of vehicle design, and reasonable tooth surface modification
In order to study the influence degree of two kinds of excitation factors on the system vibration, the vibration speed
In order to study the influence of the amplitude of time-varying meshing stiffness on the vibration characteristics of the system,
In order to study the influence of the mean value of the time-varying meshing stiffness on the vibration characteristics of
The dynamic model of an electric vehicle reducer is established, and the time-varying meshing stiffness curve and meshing impact curve
Taking a high-speed helical gear transmission of an electric vehicle as the research object, the structure diagram is shown in
Due to the mass and inertia of the gear, the meshing impact speed will produce meshing impact force. The size
From the above analysis, it can be seen that the gear error and the loaded deformation of the gear teeth
In the figure, OP is the center of the driving wheel, og is the center of the driven wheel, P
In order to qualitatively study the influence of meshing impact time on the vibration characteristics of helical gear transmission, the
In order to study the vibration characteristics of single-stage helical gear transmission system under meshing impact excitation, the obtained meshing
The main error items of gear are: base pitch deviation Δ FPB, tooth profile error Δ FF, tooth alignment error
In the whole meshing area of gear pair, the meshing point of error free gear transmission is always on its
Taking the high-speed helical gear transmission of an electric vehicle reducer as the research object, the vibration characteristics of the
As the most commonly used motor centralized drive transmission system of electric vehicles, the motor is directly connected with the
The transmission system of automobile is one of the core competitiveness of automobile. The transmission system of traditional fuel vehicle