Time-varying meshing stiffness calculation of healthy gears
The potential energy method is used to solve the time-varying meshing stiffness of gears.Each tooth is considered as a variable […]
Scientific
Scientific
Scientific
Research on characteristics of gear knocking under no-load condition
To simulate the no-load knocking characteristics of gears, an angular acceleration excitation is applied in the torsional direction of the
Scientific
Effect of Center Distance Deviation of Gear Drive System on Dynamic Load under Steady State Conditions
During machining and assembling of gear drive system, there is deviation between actual and theoretical center distance of gear due
Scientific
Effect of Engine Speed of Gear Drive System on Dynamic Load under Steady State Conditions
Under steady-state conditions, the engine speed range of heavy-duty vehicles studied ranges from 1000 r/min to 4200 r/min.Under full throttle
Scientific
Research on Dynamic Characteristics of Involute Spur Gear Drive System
Vibration characteristics of two-stage fixed-shaft gear drive system and single-stage planetary gear drive system were tested, and the correctness of
Scientific
Modeling of gear drive system with cracks
The centralized parameter method is used to establish the dynamic model of gear transmission system.This method has a small amount
Scientific
Test device and system for vibration characteristics of planetary gear drive system
Taking single-stage planetary gear drive as test object, vibration characteristics test is carried out on the special test bench for
Scientific
Dynamic Model of Involute Spur Gear Drive System Fixed Shaft Gear Drive System
The bearings and gears are simplified as concentrated mass points and the rolling bearings are simplified as isotropic elastic supports.A
Scientific
Data Processing Method for Strain Signal of Involute Spur Gear Drive System
1.The cut-off frequency of low-pass filtering for strain test data is 3kHz of sampling frequency of dynamic strain gauge. 2.As
Scientific
Effect of Gear Modification Coefficient on Gear Slip Rate
To analyze the influence of gear displacement coefficient, it should be divided into equal displacement, unequal positive displacement and unequal
Scientific
Comparative analysis of torsional shear stress of involute spur gear
According to the test results of torsional shear strain of drive shaft, the torsional shear stress is calculated by formula
Scientific
Effect of Helical Bevel Gear Cutter Modification on Tooth Root Bending Stress
In order to improve the bending strength of the small gear root, the heavy contact area is usually designed to
Scientific
Optimization of Spiral Bevel Gear Based on Tooth Height Factor
The tooth height coefficient of hypoid gear pair mainly includes working tooth height coefficient and tooth crest height coefficient, which
Scientific
Data Processing Method for Displacement Signal of Involute Spur Gear Drive System
The transverse displacement test principle of the drive shaft is shown in the figure.O-point is the center position of the
Scientific
Comparison and analysis of vibration and displacement of involute spur gear drive
According to the test results of transverse vibration displacement of transmission, the displacement of axle in test direction is calculated
Scientific
Effect of Gear Modulus and Pressure Angle on Gear Slip Rate
Figure 1 shows the variation trend of sliding rate with gear modulus in standard drives with the number of teeth
Scientific
Comparison and analysis of acceleration of involute spur gear drive system
Torsional angular acceleration of gears 1 and 4 can be obtained by substituting acceleration test results of each gear into
Scientific
Data Processing for Nonlinear Dynamic Acceleration Signal of Involute Spur Gear Drive System
1.The acceleration test signal is filtered with low-pass filter whose cut-off frequency is 10kHz, the highest response frequency of the
Scientific
Contact relationship and stress distribution of flexible ring gear of Involute Harmonic Gear
Flexible ring gear is a spur cylindrical external gear, and the ring gear after assembly deformation presents straight bus deformation
Scientific
Involute Harmonic Gear Flexible Gear Profile Parameters
1. Basic profile parameters and definitions Taking the involute profile as an example, the figure is an illustration of the
Scientific
Nonlinear dynamic backlash and meshing stiffness of sun gear
The analysis process of the dynamic backlash of the outer meshing pair composed of the sun wheel and the star
Scientific
The dynamic boundary condition of the modification area of involute spur gear
If there is tooth profile modification, the dynamic boundary condition of the modification area should be added on the basis
Scientific
Centroid Position Vector and Engaging Force of Gear Pair
The dynamic center distance of a gear pair at any time is the modulus of the difference between the vector
Scientific
Maximum circumferential stress of ring gear considering the influence of gear teeth
1. Maximum circumferential stress of ring gear in design specification Considering the influence of tooth parameters, load distortion of flexible
Scientific
Engaging position of involute spur gear at any engagement teeth
In order to obtain the dynamic engagement stiffness in the process of gear transmission, besides determining the engagement positions, the
Scientific
Example Analysis of Rolling Impact of Helical Gear
Figure 1 shows the calculation results of the load-dependent position of the rodent points on the standard and modified tooth
Scientific
Nonlinear dynamic meshing model of planetary gear drive
For the fixed shaft gear drive, the design parameters of each gear pair are different, the period of meshing stiffness
Scientific
Centroid Position Vector of Gear Pair and Action Direction of Engaging Force
At present, the meshing force of gear in most models always follows the theoretical direction of meshing line, ignoring the
Scientific
Aperture circumferential stress in ring gear ring theory
Flexible wheels are subject to alternating stress with an amplitude twice that of assembly stress. In the structural analysis of
Scientific
Solution of Rolling Point Position of Tooth Face without Edge Contact of Helical Gear
When TE is greater than LTE at small wheel angle_1A under small load, it means that the clearance between teeth
Scientific
Solution to Nonlinear Vibration of Spur Gear Drive System
The experimental research shows that the gear transmission system shows obvious non-linear vibration characteristics, and the traditional linear model can
Scientific
Engaging position of involute spur gear at any engagement teeth
The engagement position of individual gear teeth during gear transmission can be determined by analysis.In order to ensure the continuity
Scientific
An example analysis of dynamic meshing stiffness of involute spur gear transmission system
The engagement stiffness of the gear pair is calculated by applying the rotating speed of 2000r / min on the
Scientific
Maximum Assembly Stress of Flexible Wheel for Involute Harmonic Gear
Harmonic gear reducer is widely used in robotics, aerospace and other fields due to its high transmission ratio, high load-carrying
Scientific
Interaction force between cross-torsion-pendulum coupling gear pairs in involute spur gear drive
Most gear dynamic models assume that the meshing force is evenly distributed along the tooth width direction, but during actual
Scientific
Effect of speed change on engagement position of fixed-shaft gear drive
It is assumed that the centre of both gears is rigidly supported.In the meshing state of tooth surface, the relationship
Scientific
Nonlinear time-varying model of gear transmission system
The nonlinear time-varying model contains many nonlinear factors such as time-varying stiffness and clearance. Recently, with the development of nonlinear
Scientific
The influence of meshing state change of tooth surface and back of involute spur gear on meshing position
The engagement state of the tooth surface can be determined by the formula at any time during the transmission process.From
Scientific
Dynamic meshing stiffness of involute spur gear transmission system
It can be seen from the analysis that the dynamic boundary conditions α B (T) and the dynamic boundary conditions
Scientific
Mechanism analysis and improvement of gear surface corrugation order noise
1. Gear corrugation order noise and analysis A bewildering “ghost-step” noise occurs in the pre-production stage of a vehicle reducer
Scientific
Nonlinear dynamic model of lateral-torsional-pendulum coupling for involute spur gear drive
The three-dimensional solid model of involute spur gear drive is shown in the figure, and the following assumptions are used
Scientific
Nonlinear time-invariant model of gear drive system
In the process of gear transmission, in order to avoid jamming, clearance must be left between the sides of the
Scientific
Effect of Center Distance Change of Involute Spur Gear on Meshing Position
During gear transmission, changes in center distance cause changes in the direction of the engagement line, resulting in the actual
Scientific
Mechanism of gear surface corrugation order noise
In the gear vibration and noise phenomena of the automobile industry, gear screeching and knocking are usually the most common
Scientific
Nonlinear dynamic model of coupling of involute spur gear drive
According to the method used in establishing dynamic model, the dynamic model of gear transmission system can be divided into
Scientific
Non-linear dynamic tooth side clearance of fixed-shaft gear drive
In calculating the dynamic meshing force of the gear, the influence of the degree of freedom of swing is neglected,
Scientific
Linear time-varying model of gear transmission system
In order to ensure the continuity of gear drive, the overlap degree of gears is generally greater than 1, which
Scientific
Centroid Position Vector of Sun Gear Planetary Wheel and Action Direction of Engaging Force
The main difference between the three-dimensional dynamic model of the sun-planetary gear and that of the fixed-shaft gear drive is
Scientific
Nonlinear dynamic model of lateral-torsional-pendulum coupling for planetary gear drive
The three-dimensional solid model of the Involute Spur Planetary gear drive is shown in the figure, and the assumptions used
Scientific
Nonlinear Dynamic Model of Lateral-Torsion-Swing Coupling for Fixed-Shaft Gear Drive
Lagrange method is used to establish the yaw-torsion coupling nonlinear dynamic model of fixed-axle gear drive. The Lagrange equation is:
Scientific
Gear measurement and fault diagnosis
The manufacturing error of gear not only affects the stability of power transmission, resulting in vibration noise and dynamic load
Scientific
Nonlinear dynamics of involute spur gear drive system
(1) Nonlinear dynamic model of yaw-torsion coupling of involute spur gear drive For involute spur fixed-shaft gear drive and planetary
Scientific
Linear time-invariant model of gear transmission system
In the linear time-invariant model of gear transmission system, all non-linear factors are neglected and the time-varying meshing stiffness is
Scientific
Application of gear material
With the global shortage of resources and the aggravation of environmental pollution, people pay more and more attention to the
Scientific
Typical gear processing and precision forging of gears
Performance Analysis of Gears Produced by Two Processes The gear produced by a typical gear machining process is shown in
Scientific
Effect of Coupling between Tooth Side Clearance and Lubricant Viscosity of Spur Gear
The figure shows the distribution cloud of the tooth surface contact temperature on the lubricant viscosity and the tooth side
Scientific
Vibration and noise control of gear drive
The purpose of vibration and noise control of gear transmission is mainly to improve the dynamic performance of the transmission
Scientific
Correction measures and experimental verification of staggered helical gears
Corrective measures According to heat treatment process inspection and finite element calculation results, the transmission staggered helical gear is quenched
Scientific
Effect of Coupling Torque and Backlash of Spur Gear
The figure shows the distribution cloud of the tooth contact temperature in the clearance plane between the torque and the
Scientific
Efficient transmission of gear drive and energy saving
Efficiency is a very important performance index for the transmission of power. Low transmission efficiency will not only result in