Discrete model and boundary conditions of finite element gear pair with time-varying meshing stiffness
The basic idea of using finite element method to calculate the time-varying meshing stiffness of gear pair is to discretize […]
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Meshing stiffness of variable hyperbolic arc gear based on finite element method
In the process of gear meshing, the periodic changes of the number of meshing teeth and meshing position lead to
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Mathematical model of Tractor Gear Optimization
According to the large power of tractor transmission system, higher requirements are put forward for the strength and service life
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Example simulation and parameter influence analysis of meshing contact stiffness of gear tooth surface
The parameters of gear pair are selected as the calculation object, and the contact stiffness of gear pair under Yang
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Understanding Helical Gear Design
Helical gear is a type of gear used in a variety of applications where smooth operation, high speed, and/or heavy
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Yang-sun and semi empirical contact model for meshing contact stiffness of gear tooth surface
According to the Hertz contact analysis theory, the geometric model of the contact end face of two cylinders as shown
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Formula of meshing force of single tooth considering multi-stage gear profile modification drum and support system deformation
In the following three steps, the formula of meshing force of single tooth is derived, which takes into account the
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Comparison of results before and after gear modification
By using romax designer software, the optimal gear modification parameters are put into the gear modification module, and the simulation
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Optimization of gear three dimensional modification based on genetic algorithm
The determination method of gear modification parameters is usually based on theoretical calculation or experimental induction, this method is generally
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Principle and method of gear profile modification of transmission
Tooth profile modification is a common method to avoid the impact of gears in the process of meshing. It can
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Basic introduction and comparison of gear tooth profile
In order to further study the dividing line of the number of teeth in the two cases, according to the
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Stress comparison of gear before and after modification
The static stress analysis of gear can check the contact and bending strength of gear, and analyze the stress, damage
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Stiffness composition and analytical equation of spur gear teeth
The standard involute gear with 20 ° pressure angle processed by rack cutter is shown in the figure. The complete
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Gear meshing stiffness composition
According to the meshing movement process of a pair of gear pairs, the statically indindent meshing diagram of the gear
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Analysis of transmission gear before modification based on optimal modification design
After the research model of transmission gear transmission mechanism is established, the software is used to set the operating conditions
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Gearbox model test under normal condition
The LSTM network model is established by selecting appropriate parameters to predict the oil temperature of gearbox. In order to
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Study on the dynamics of gear transmission system under fatigue pitting of tooth surface
With the “innovation, coordination, green, open, sharing” five development concepts and development needs, industrial equipment demand of high quality quantification,
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Formula of single tooth meshing force considering support system deformation and multi-stage gear profile modification
Because reducing the fluctuation of static transmission error is generally accepted as the criterion of tooth profile modification, the key
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Fault signal of sun gear based on elmd optimized by adaptive noise parameters
The time domain waveform and frequency spectrum of vibration data measured when the sun wheel is cracked are shown in
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Fault analysis of wind turbine gearbox based on long term and short term memory network
As a new machine learning method, deep learning method has been widely used in image processing, speech recognition, brain computer
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Fault signal of planetary gear based on ELMD optimized by adaptive noise parameters
The time domain waveform of vibration data measured when the planetary gear is cracked is shown in Figure 1. It
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Study on Analytical Time-varying Meshing Stiffness of Gear
Chen et al. deduced and studied the influence of the meshing stiffness of the internal meshing gear pair and the
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Study on Time-varying Meshing Stiffness of Analytical Gear
The analytic method of potential energy is mainly based on the elastic mechanics theory and the elastic deformation energy under
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Research on residual life prediction of gear based on long term and short term memory network
In recent years, deep learning has been widely concerned. Deep learning constructs a neural network model with many hidden layers
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Optimization effect evaluation of multi gear rocker box in shearer cutting section
This part analyzes the influence of rocker box structure optimization on gear meshing state of internal transmission system. Stationary random
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Fault analysis of planetary gearbox based on elmd with adaptive noise parameter optimization
In order to verify the effectiveness of the proposed method in planetary gearbox fault diagnosis, a planetary gearbox fault simulation
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Meshing stiffness of variable hyperbolic arc gear based on finite element method
(1) Based on the finite element method, the meshing stiffness finite element calculation model and meshing stiffness calculation method of
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Dynamic model of planetary gear transmission system
According to Lagrange equation, the dynamic differential equation of planetary transmission system can be deduced as follows Among them, JS,
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Meshing stiffness analysis of variable hyperbolic arc gear based on finite element method
In the process of gear meshing, the periodic changes of the number of meshing teeth and meshing position lead to
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Time varying meshing stiffness of planetary gears
In order to ensure the continuous operation, the meshing process of gears is actually the alternating meshing of single pair
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China standard for gear transmission system
With the development of national industrial equipment and the urgent need for industrial products to be improved, the bearing capacity,
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Dynamics model of gear transmission system under fatigue pitting of tooth surface
Figure (b) and (c) the torsional vibration dynamic model of elastic support model (figure) (a) effect can reflect more parameters,
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Dynamic mathematical model of gear transmission system with different degrees of freedom and analysis objects
With three degrees of freedom type torsional vibration model (FIG. (a)) as the carrier for the influence parameters calculation and
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Study on Dynamics Model of Gear Transmission System
Based on the single degree of freedom torsion model, Zajkek et al. used parabolic functions to describe the engagement stiffness
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Explanation of gear transmission system characteristics
Gear system dynamics is a complex multi-coupling dynamics system, which strictly follows the system input-carrier analysis-response output dynamic control response
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Dynamic characteristics of gear transmission system under fatigue pitting of tooth surface
The five development concepts of innovation, coordination, green, open and sharing are put forward, green production and green transformation are
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Tractor gear transmission mechanism based on mathematical analysis
In the process of tractor gear transmission, the transmission load is large, the running speed is low, and the transmission
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Calculation of contact life of American Standard ANSI / AGMA 2001-d04 gears
American Standard ANSI / agma2001 is adopted to calculate the required contact strength, and the calculation formula is as follows:
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S-N curve of contact strength of ANSI / AGMA 2001-d04 standard gears
In the design of American standard gears, steel, Grade2, hrc58-64 (AGMA), case carbonized steel and case hardened gear materials similar
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Calculation of gear life in ISO / TS 6336-2 standard
1.Calculate the S-N curve of gear The required contact strength is calculated according to ISO / TS 6336-2. Since it
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Topology optimization model of multi gear rocker box in shearer cutting section
Structural optimization is the application of optimization algorithm in mechanical design. According to different optimization variables and levels, it can
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Nonlinear connection of multi stage gear transmission box coupling dynamic model
Bearing reaction force, meshing load of fixed shaft gear, driving torque of cutting motor and cutting roller load are considered
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Tractor heavy duty gear parameters and working conditions based on American Standard ANSI / AGMA 2001-d04 and international standard ISO / TS 6336-2
The bending fatigue life of tractor gear is closely related to the selection of gear modulus, which can be selected
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Constraint conditions of Tractor Gear Optimization Based on mathematical analysis
According to the characteristics of objective function and planetary gear design, constraints can be divided into flexible constraints and rigid
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Linear elastic connection of multi-stage gear transmission box coupling dynamic model
The motor rotor and the gear shaft 1, the gear shaft 8 and the sun gear of the first stage
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Gearbox fault diagnosis method based on multi-channel one-dimensional convolutional neural network feature learning
The input of multi-channel signal can collect fault feature information more comprehensively, and CNN has achieved great success in the
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Mathematical model of Tractor Gear Optimization Based on mathematical analysis
According to the large power of tractor transmission system, higher requirements are put forward for the strength and service life
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Example of data preprocessing method for fan condition monitoring based on physical structure of gearbox
Take the detection of high-speed shaft gear as an example. The sensor data of high-speed shaft bearing position is taken
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VMD comparison and verification of variable speed gearbox gear calculation
In order to further illustrate the superiority of this method, the order spectrum obtained by EMD and itd is compared
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Application example of fan condition monitoring based on physical structure of gearbox
It is tested and verified on a 1.5 MW wind turbine in a wind farm. The gearbox of the fan
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Rigid connection of multi-stage gear transmission box coupling dynamic model
When the gear and the shaft are connected by spline, or the analysis object is the gear shaft, it can
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Feature extraction of gear uniform wear fault
Through the method proposed in this paper, the feature extraction of gear uniform wear fault is carried out, and the
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Structural optimization design of multi gear rocker box in shearer cutting section
Topology optimization is a kind of conceptual design. The optimization results are shown in the figure, which can not be
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Data preprocessing algorithm based on gearbox configuration
For variable speed rotating machinery such as fan, in the process of operation, various signals reflecting its operation information are
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Feature extraction of gear broken fault
Firstly, the vibration signal is resampled in the angular domain, and the input shaft speed curve (as shown in Figure
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Non Hertz contact model of multi-stage gear with three-dimensional topological modification considering box deformation
Three dimensional topological modification is an effective means to improve the transmission quality of gear system, which includes two directions
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Dynamic performance optimization of multistage gears in shearer cutting section
The ultimate goal of dynamic analysis is to design object products with high dynamic performance. The coupling dynamic model of
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Numbering method of degrees of freedom for multi-stage gear transmission box coupling dynamic model
The generalized displacements of substructure dynamic equations are numbered in local coordinates, and the generalized displacements of each substructure will
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Data compression algorithm based on gearbox configuration
The data compression algorithm based on the gearbox configuration is based on the physical structure of the gearbox and the
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VMD for solving variational problems in gear calculation of variable speed gearbox
By introducing the quadratic penalty factor α and Lagrange operator λ (T), the constrained variational problem is transformed into the