Formation and dynamic excitation mechanism of gear integrated meshing stiffness
In the process of transmission of motion and power, gear teeth will have bending deformation, shear deformation and other elastic […]
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Influence of input speed on gear vibration state
Speed is one of the external load parameters in gear system. Under theoretical conditions, gear slapping behavior will be more
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Comprehensive analysis of the influence of stiffness excitation and friction excitation on gear system response
We discuss the dynamic characteristics of the dynamic response of gears in time domain and frequency domain in three different
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Steady state of gear system based on harmonic balance method
Because the stiffness excitation and error excitation only select the first harmonic, the r = 1 of SSI = 0
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The influence of stiffness excitation and friction excitation on the response of gear system is considered comprehensively
This paper mainly analyzes the case of dynamic response model simulation 3. In this case, the stiffness excitation and friction
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Calculation of gear meshing stiffness for measuring tooth root dynamic strain
Since the gear tooth is simplified as a cantilever beam with variable cross-section, the stress distribution of the gear tooth
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Steady state response of gear system based on harmonic balance method
The transmission ratio of the reducer variable speed integrated gear is as follows: Where ε is the eccentricity. The expressions
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Only the influence of friction excitation on the response of gear system is considered
This paper mainly analyzes the case II of dynamic response model, which only considers the influence of the increase of
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Theory of gear meshing stiffness
The comprehensive meshing stiffness of gear is the elastic response of the comprehensive Meshing Effect of each pair of teeth
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Discrete Fourier transform of nonlinear function of gear clearance in reducer variable speed integrated gear
In the system of equations Si, the coefficient Zi of the steady-state response q is the unknown quantity to be
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Calculation of time-varying meshing stiffness of healthy gears
According to the energy method, the bending energy, shear energy and axial compression energy stored in gears can be expressed
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Only the influence of stiffness excitation on the response of gear system is considered
This paper mainly analyzes the dynamic response model simulation case 1. That is to say, only the influence of gear
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Dynamic response analysis method of gear system
In the analysis methods of gear system dynamic response, time domain signal analysis method is the direct means to study
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Sensitivity of system parameters to gear vibration amplitude
The sensitivity of parameters is very important to the dynamic design and optimization of gear system. There are three commonly
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Time varying meshing stiffness of healthy gears
The time-varying meshing stiffness of gears is an important excitation source of gear vibration. Accurate calculation of the time-varying meshing
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Calculation of time-varying meshing stiffness of pitting gears
In the study of gear tooth surface pitting fault, the main shapes of pitting corrosion are rectangular pitting, elliptical pitting
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Influence of load torque on gear vibration
In addition to the static transmission error, time-varying meshing stiffness and other internal excitation will affect the vibration of the
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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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Microscopic morphology analysis of coal mill gear
The fracture specimens were cut at the gear break and cleaned several times, then the fracture morphology was analyzed.The micro-morphology
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The dynamic load on the gear system of the vehicle
The maximum dynamic meshing force and the dynamic load coefficient of the loaded gear are analyzed respectively. They can provide
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Optimization evaluation group of gear modification parameters based on genetic algorithm
1) Decoding According to the encoding mode, the chromosome bit string is decoded to obtain the shape modification quantity is,
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External excitation load of vehicle gear transmission system
The external excitation load of vehicle gear transmission system mainly includes engine input torque and load torque. The engine of
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Optimization of gear modification parameters based on genetic algorithm
① Gene coding of modification parameters Four modification parameters of driving gear are defined as tooth height deflection (is δ),
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Dynamic bearing force of coupling model of gear transmission
The dynamic bearing force is an important parameter in the dynamic response. The dynamic characteristics of the gear system are
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Dynamic Inherent Mode Analysis of Gear Drive Coupling Model
In the established five-gear manual transmission model, there is coupling of finite element model, and the number of degrees of