Establishment of geometric model of wheel side meshing gear
Firstly, the 3D complex model (such as chamfering and other details) is simplified in order to reduce the difficulty of […]
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Influence of hub deformation on engagement scheme of star gear reducer
In the case of reducing the hole diameter properly, modifying the size of a hole alone can not completely eliminate
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Force analysis of meshing gear of wheel side gear reducer
For each part of the design requirements should meet the size of the installation, power standards, long life and so
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Influence of hub deformation on meshing finite element calculation results of star gear reducer
The results of finite element analysis show that: When the rotation angle of the input end is between 0.64 rad
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Influence of hub deformation on meshing finite element model of star gear reducer
According to the real structure and the above model simplification method, the author establishes the three-dimensional solid models of internal
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Effect of hub deformation on meshing model simplification of star gear reducer
In fact, there are many parts in the transmission gear train of planetary gear output type planetary gear reducer, the
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Influence of hub deformation on meshing simulation model of star gear reducer
The planetary gear hub of planetary gear output type planetary gear transmission system consists of six circumferential uniformly distributed transmission
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Brief introduction of planetary gear reducer with planetary gear output
For planetary gear output type planetary gear reducer, during its operation, the planetary gear not only makes translation around the
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Bifurcation characteristics of a two stage planetary gear system with varying backlash
Due to the manufacturing accuracy, installation error, lubrication requirement and space reserved for the thermal expansion of gear teeth, the
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Influence of hub deformation on meshing characteristics of star gear reducer
Star gear transmission is a kind of transmission system with few internal teeth difference and internal translation. Compared with other
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Lyapunov exponent of nonlinear system of two stage planetary gear system
Lyapunov exponent represents the average exponential divergence rate of the distance between two adjacent trajectories in the phase plane with
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Nonlinear dynamic system excitation of two stage planetary gear system
1.Time varying meshing stiffness When the gear is in transmission, the meshing tooth pair alternates between 1 and 2, the
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Study on nonlinear dynamic characteristics of two stage planetary gear train
The lumped parameter method is used to establish the “translation torsion” coupling dynamic model of the two-stage speed increasing planetary
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Nonlinear dynamic model of two stage planetary gear system
The research object of the model is a two-stage planetary gear system, and the system diagram is shown in Figure
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Nonlinear dynamic characteristics of two stage planetary gear train
Compared with single-stage transmission, multi-stage planetary gear transmission has higher efficiency, but its structure is more complex. Multi stage planetary
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Modal analysis of gear transmission shaft considering forced vibration
The modal module is used to simulate and test the transmission shaft structure. As shown in the figure, when using
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Influence of tooth line radius of variable hyperbolic arc gear on meshing stiffness curve
For the variable hyperbolic arc gear, when the radius of the tooth line is small, the tooth profile surface of
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Modal establishment of gear transmission shaft considering forced vibration
The gear transmission structure composed of four stage reduction system is selected as the test object, and the gear transmission
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Influence of load on meshing stiffness curve of variable hyperbolic arc gear
When different loads are applied, the comprehensive elastic deformation of the tooth surface of the variable hyperbolic arc gear changes,
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Dynamic simulation analysis of gear transmission shaft considering forced vibration
At this stage, the research on gear transmission structure is mainly concentrated in the field of vehicle transmission, reducer and
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Comprehensive meshing stiffness of double teeth of variable hyperbolic arc gear
After the single tooth meshing stiffness is obtained, the double tooth comprehensive meshing stiffness curve can be obtained by the
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Residual life prediction of gear based on long term and short term memory network
Gear as the transmission device of mechanical equipment, its health has a great impact on the stability and life of
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Single tooth meshing stiffness of variable hyperbolic arc gear
The comprehensive elastic deformation UN of the pair of gear teeth is extracted by finite element post-processing, and the normal
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Iteration of modification parameters for multi-stage gear transmission system of shearer cutting section
An example is given to show the iterative process of the modification parameters. The tooth profile modification in this study
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Normal contact force and comprehensive elastic deformation of meshing tooth surface of variable hyperbolic arc gear
In order to accurately simulate the whole process of a certain tooth surface of the driving gear from entering meshing
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Preprocessing of finite element analysis model of variable hyperbolic arc gear
The pre-processing of finite element analysis of variable hyperbolic arc gear includes: the selection of element, the setting of analysis
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Simulation analysis of rough surface of gear transmission system
In order to compare and display the data intuitively, the single logarithm coordinate drawing method is used to draw the
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Establishment of finite element analysis model of variable hyperbolic arc gear
In order to calculate the stiffness of variable hyperbolic arc gear, it is necessary to calculate the normal contact force
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Finite element model of variable hyperbolic arc gear
In the finite element calculation, the choice of mesh type is very important to the accuracy of the results. According
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Contact model of asperity on rough surface of gear transmission system
According to the two-dimensional contour curve (formula) of rough surface expressed by W-M function, the morphology characteristics of rough surface
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Tooth profile modification of multistage gear transmission system of shearer cutting part
In this study, symmetrical straight line modification is used in the direction of tooth profile, and the modification curve is
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Effect of tooth surface roughness on gear transmission system
The rough appearance of the tooth surface is random, and the geometric characteristics of the appearance are related to the
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Friction mathematical model of meshing stiffness of gear transmission system
According to the actual meshing process of gear pair, the interface of a pair of gear pairs is filled with
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Digital modeling of variable hyperbolic arc gear
The principle of machining variable hyperbolic arc gear with rotating cutter head is shown in Figure 1. With double-edged cutting,
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Dynamic model of tractor 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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Tooth direction repair drum of multi-stage gear transmission system of shearer cutting part
The calculation process of the modification parameter calculation method mainly includes four steps: the first step is to obtain the
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Calculation formula of meshing stiffness of variable hyperbolic arc gear
According to the forming principle of rotary cutter head, Zhao Fei et al. Verified mathematically that the middle section tooth
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Time varying meshing stiffness of tractor 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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Interface characteristics of gear pair
The interface characteristics of gear pair refer to the complex composition combination properties formed by the micro geometric characteristics, lubrication
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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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Dynamic simulation of multistage gear transmission system of shearer cutting part
System dynamics simulation is to obtain the actual meshing state of each gear pair. The coupling dynamic model of the
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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