Research status of non-circular gear dynamics
The existing research on the dynamics of noncircular gears can be roughly divided into two categories: rigid dynamics and elastic […]
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Gear dynamic model formula
The torque of the driving gear and the internal force acting on the gear are given. In order to show
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Influence of time-varying meshing stiffness on gear vibration
Figure a) shows the influence of the average value of gear meshing stiffness K0 on the response peak to peak
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Vibration analysis of reducer variable speed integrated gear based on harmonic balance method
Noncircular gear is a kind of precise transmission mechanism which can realize the complex functional relationship between driving wheel and
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Gear dynamic model
In order to study the influence of time-varying meshing stiffness and sliding friction force on the dynamic response of gear
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Basic knowledge of gear (4)
What is the equivalent gear and equivalent number of teeth of helical gear? What is the purpose of equivalent number
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Gear meshing process
Gear system dynamics is a discipline to study the dynamic behavior of gear system in the process of transmitting motion
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Influence of static transmission error on gear vibration
The static transmission error is one of the main excitations in gear transmission. It can be seen from the figure
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Basic knowledge of gear (3)
How to determine the minimum number of teeth without undercutting for standard external gear? Answer: it is determined by Zmin
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Influence of different eccentricity on gear vibration
The eccentricity ε determines the variation range of the transmission ratio of the reducer variable speed integrated gear. The larger
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Experimental study on gear pitting
Taking gear as the research object, starting from different research methods, through the establishment of gear system dynamic model, the
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Research on gear stiffness excitation at China and abroad
In the process of calculating the meshing stiffness of gears with energy method, the gear teeth are usually assumed to
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Basic knowledge of gear (2)
What is a standard gear? Answer: m, α, h * a, c * are standard values, and S = e
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Influence of different input speeds on gear vibration
When the diagram shows the dynamic response peak to peak value with the input speed change law curve. When the
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Optimization of gear modification parameters based on genetic algorithm
Gear profile modification is an effective method to obtain better meshing contact characteristics and dynamic characteristics by trimming the profile
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Steady state response solution of gear system based on multinomial harmonic balance method
From the basic parameters, the time-domain response curve of the reducer variable speed integrated gear obtained by harmonic balance method
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Solution steps of approximate analytical solution of harmonic balance method for reducing speed integrated gear
Considering the harmonic balance between the left and right sides of the formula, the angular acceleration term on the right
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Optimization analysis of gear profile modification based on genetic algorithm
In engineering design, there are many very complex optimization problems, which are often difficult to find the optimal solution by
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Analysis of the influence of load torque on gear vibration state
(1) Eccentricity, input speed and error amplitude have great influence on the rattle state of the gear pair. With the
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Simulation of planetary gear sideband frequency signal
1 Experiment description The main body of the experiment is the eight speed automatic transmission under development. The experiment is
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Research Status of Gear slap Dynamics at China and Abroad
Among domestic scholars, Feng Qi and others have studied the slapping vibration of random AM secondary drive, directly adopted non-Gauss
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Simulation of planetary gear sideband frequency signal
1 Gear matching scheme In order to analyze the influence of the number of teeth, the number of planetary gears
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Research Status of Gear Slap Dynamics Abroad
When a gear system is running at a low speed, a “rattling” gear knock, called rattling, often occurs.The decibel value
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Sensitivity of system parameters to gear vibration amplitude
When calculating the sensitivity of each parameter, other parameters remain unchanged. According to the data of noncircular gears in table
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Kinetics of Friction Excitation on Gear Face
In domestic research, Wang Sanmin et al. established a sub-non-linear dynamic model. By means of numerical calculation, the influence of
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The harmonic balance method of the vibration harmonic balance method for reducing speed integrated gear
It can be seen from the formula that the harmonic components of ω C and N ω e (n is
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Dynamics of coupling model of gear transmission case surface acceleration
The acceleration of the box surface is an important parameter to excite the radiated noise of the surrounding air. Figure
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Failure Analysis of 42CrMo Carburized Steel Gear of Coal Mill
1. The chemical composition of sun gear material conforms to the requirement of chemical composition content of 42CrMo steel in
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Dimensionless dynamic model of reducer variable speed integrated gear
In the formula, although the meanings of R2 (T) cos α inside and outside the brackets are different, the results
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Research on Dynamic Characteristics and Noise Reduction of Gear Drive System
In 1991, Ozguven analyzed the non-linear dynamic characteristics of spur gear with six-degree-of-freedom non-linear bending-torsion coupling model, based on the
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Research on vibration characteristics of reducer speed integrated gear based on harmonic balance method
According to the meshing principle and gear dynamics theory, the multi parameter variable vibration model of the new type of
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Multi parameter variable vibration characteristics of reducer variable speed integrated gear
The speed reduction integrated gear integrates the transmission characteristics of non-circular gear and face gear, and can realize the variable
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Research status of face gear dynamics at China and abroad
The further application of face gear benefits from the following researchers. Zhao et al. Broke through the traditional mode and
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Metallurgical Quality Analysis of Coal Mill Gears
Non-metallic inclusions in gear materials are rated according to the national standard.The non-etched microstructure of the metallographic wear surface of
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Time varying tooth meshing error excitation of reducer variable speed integrated gear
The tooth meshing error produced in the process of gear machining and installation is a kind of displacement type dynamic
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Time varying meshing stiffness excitation of reducer variable speed integrated gear
The influence of stiffness excitation is directly reflected in the time-varying coefficient of elastic force term in the dynamic model
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Time varying transient center excitation of reducer variable speed integrated gear
The circular gear mainly includes two kinds of internal excitation stiffness excitation and error excitation. As the power transmission of
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Dynamic simulation innovation of gear transmission under different factors
① The precise dynamic model considering the friction of tooth surface is established, and the complex time-varying stiffness and the
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Tooth profile equation and meshing equation of noncircular gear
When machining non-circular gear, the relative velocity before two gears is perpendicular to the normal vector of the meshing contact
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Meshing equation and tooth profile equation of noncircular gear
In order to get the meshing equation and the tooth profile equation of non-circular gear, it is necessary to establish
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Forming principle of gear tooth surface of reducer variable speed integrated gear
The machining basis of noncircular gear is the generating method. Firstly, the non-circular gear blank is processed, and the gear
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Research status of dynamic characteristics and noise reduction of gear transmission system
The research on dynamic characteristics and dynamics of gear transmission system has been gradually developed from static analysis to dynamic
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Pitch curve and transmission ratio of reducer variable speed integrated gear
The reducer variable speed integrated gear is a new type of gear mechanism, which is composed of ordinary involute cylindrical
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Research status of noncircular gear dynamics at China and abroad
On the basis of previous studies, some scholars have added the influence of other parts of the system, such as
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Robustness analysis of gear modification
Robustness is also known as robustness. For gear modification, it is to ensure that the optimal modification scheme has stable
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Conclusion of the effect of shot peening on the bending fatigue properties of gear materials
a. The curves of bending P-S-N of 20crnimoh material with different survival rates of shot peened and non shot peened
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Research status of face gear dynamics
The reducer variable speed integrated gear is put forward on the basis of face gear and non-circular gear characteristics. The
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Chemical Composition Analysis of Coal Mill Gear Material
A more detailed chemical composition analysis of the gear material sent for inspection is performed based on the spectral analysis
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Dynamic simulation of gear transmission under different factors
Based on the actual engineering application, the dynamic characteristics of gear transmission system and the methods of vibration reduction and
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Analysis of bending fatigue property of gear material by shot peening
a. In gear manufacturing, two kinds of test gears adopt the same material, the same machining and heat treatment process,
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Gear backlash and its smoothing
Gear backlash is the amount of circumferential shaking of another gear when one gear is fixed, which is calculated by
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Energy Spectrum Analysis of Coal Mill Gear
Electron spectroscopy is a common method for analyzing surface components of materials.The root surface near the fracture source and the
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Analysis on Main Factors of Gear Beating
The knocking dynamics of the vehicle transmission includes two aspects: one is the knocking in neutral, i.e. the knocking produced
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The dynamic characteristics of gear beating excitation
The rattling force of gear is another important source of vibration and noise of gear. It produces rattling sound of
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Side band frequency characteristics and mechanism of planetary gear meshing excitation modulation
(1) The distribution model of the frequency band law of planetary gear system is established, which mainly considers the number
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Vibration excitation and signal model of gear engagement
Transmission error is the main excitation of gear vibration. It combines the influence of meshing time-varying stiffness and manufacturing error,
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Optimization target setting of gear modification parameters based on genetic algorithm
For the set optimization objective, that is, the minimum peak peak te optimization of transmission error, it is not known
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The establishment of the analysis model of gear mesh excitation modulation sideband frequency
In the development of planetary gear drive, it is found that there is obvious noise in the bench test of
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Analysis of the characteristics and mechanism of the side band frequency of gear meshing excitation modulation
There are many meshing excitations in gear drive, such as planetary drive. There are often modulation phenomena between these excitation
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Drawing P-S-N curve of bending fatigue property of gear material by shot peening
According to the calculation results, the curve of bending P-S-N of two different process gears of 20crnimoh material is shown