Bending Strength Calculation of Heavy Duty Gear Rack Root
For the calculation of heavy load large module gear and rack drive, there are many literature research calculation methods, some […]
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heavy gear
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Tooth profile design of heavy-duty gear rack
The gear rack with large module and heavy load is not suitable for the conventional hobbing and slotting processing method. […]
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Tooth Profile Design and Tooth Root Stress Calculation Method of Heavy Duty Gear Rack
With the rapid development of China’s economy, mining machinery, engineering machinery, marine engineering equipment and other heavy machinery and equipment […]
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Application effect of heavy gear of shearer rocker arm
In order to verify the actual effect of domestic R&D and manufacturing of heavy gears, Shendong Coal Group Co., Ltd. […]
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Quality control of heavy gear of shearer rocker arm
The whole process of heavy gear processing shall strictly control the quality and make tracking records, and must be tested […]
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Calculation and optimization design of heavy gear parameters of shearer rocker arm
By using the professional heavy gear simulation analysis software, combined with the actual measurement parameters and working condition parameters, the […]
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Selection of Domestic Raw Materials for Heavy Gear of Shearer Rocker Arm
Refer to the commonly used materials for heavy gear processing in China, consult the steel brand manual, and compare the […]
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Meshing performance analysis of high-speed and heavy-duty spiral bevel gears
Based on TCA technology, the corresponding high-speed and heavy-duty spiral bevel gear surface impressions and transmission error curves before and […]
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Mathematical model of tooth surface optimization design of high-speed and heavy-duty spiral bevel gears
Since the coincidence degree and the transmission error amplitude at the transition of high-speed and heavy-duty spiral bevel gears are […]
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Coincidence degree of high-speed and heavy-duty spiral bevel gears
Without considering the elastic deformation of the tooth surface (assuming that the gear is completely rigid), a pair of local […]
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High speed and heavy load spiral bevel gear
In the fields of aerospace vehicles, high-speed and heavy-duty spiral bevel gears, as the key of the transmission system, have […]
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30CrMnTi grinding of spiral bevel gear of heavy vehicle
The spiral bevel gear of heavy vehicles generally adopts high-strength alloy steel such as 30CrMnTi. This kind of steel is […]
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Study on grinding surface performance of heavy duty spiral bevel gear
Heavy duty spiral bevel gear has many excellent characteristics, such as stable transmission performance, low noise, large transmission torque and […]
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Research conclusion of fatigue crack and data simulation of heavy load transmission gear
Taking the transmission gear of heavy equipment as the research object, the fatigue crack propagation and fatigue fracture of gear […]
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Establishment of bending fatigue model of transmission gear in heavy equipment
The model used for the numerical simulation of gear bending fatigue is the same as that used in the bending […]
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Numerical simulation of bending fatigue of 42CrMo heavy equipment transmission gear
When testing the bending fatigue of 42CrMo heavy equipment transmission gear by experimental method, the data results have obvious advantages, […]
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Analysis of bending fatigue test results of heavy load transmission gears
Before the formal bending fatigue test, the load level of the test needs to be determined. Pick two from the […]
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Selection of fatigue crack evolution test method for heavy load transmission gear
The bending fatigue characteristic curve and bending fatigue limit stress of the test gear shall be combined according to different […]
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Sample design of heavy duty transmission gear
The transmission gear of heavy equipment used in the bending fatigue test is designed based on the gear applied in […]
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Design of fixture for fatigue crack evolution test of heavy load transmission gear
The test adopts the form of single tooth loading. It is necessary to design special fixtures according to the standard […]
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Analysis of cycle times of different crack length and stress intensity factor at crack tip of heavy load transmission gear
The stress ratio r = 0.6, the number of cycles n corresponding to the stress intensity factor at the crack […]
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Statistical analysis of crack length and stress intensity factor at crack tip of heavy load transmission gear
In order to verify the correctness of the above crack propagation, the crack length and crack tip stress intensity factor […]
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Study on propagation law of heavy-duty gear under different initial crack angles
The equivalent stress at the crack tip under different crack inclination angles is extracted and plotted, and the equivalent stress […]
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Load and boundary conditions of dynamic crack propagation model of heavy load transmission gear
The dynamic continuous growth of fatigue crack is realized by resetting the crack length each time. In the numerical simulation […]
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Study on crack propagation law of heavy duty gear under different initial crack positions
Study the crack propagation law when the initial crack position H0 is 60mm, 62mm, 64mm, 66mm, 68mm and 70mm respectively, […]
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Fracture morphology of instantaneous fracture zone of heavy load transmission gear
Fig. 1 shows 150, 300, 500 and 1000 times SEM images of fatigue fracture in the instantaneous fracture zone. The […]
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Numerical simulation analysis of crack propagation in tooth root of heavy duty gear
In the actual process of gear meshing, the maximum contact stress usually acts on the tooth surface of the pinion. […]
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Fracture morphology of stable fatigue crack propagation zone of heavy load transmission gear
Under the continuous loading of cyclic loading and unloading, the slip band around the crack tip deforms, resulting in the […]
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Crack propagation principle of heavy duty gear based on extended finite element method
In order to simulate the singularity and discontinuity of element displacement stress, it is realized by constructing the extended functions […]
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Analysis of macro fracture morphology of fatigue crack sample of heavy load transmission gear
It can be seen that the fracture clearly presents three regions with different morphological characteristics, as shown in Figure 1. […]
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Observation method of fatigue fracture morphology of tensile specimens of heavy transmission gears
The morphological characteristics of fracture reflect the quality of materials and play an important role in material quality inspection, fault […]
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Influence of crack shape on stress intensity factor at crack front of heavy duty gear
Under the influence of crack shape, the change of mode I stress intensity factor is studied. In the process of […]
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Statistical analysis of extended life of heavy transmission gears under different stress ratios
Under the action of cyclic load, cracks begin to appear and grow, and the remaining life of the sample is […]
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Analysis of calculation results of stress intensity factor at leading edge of root crack of heavy-duty gear
Under the set parameters, the gear model is simulated. As shown in the figure, the trend distribution of stress intensity […]
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Compact tensile specimen for fatigue crack of heavy transmission gear
By referring to the national standard GB / t6398-2000 test method for fatigue crack growth rate of metallic materials, the […]
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Establishment of three-dimensional model of heavy-duty gear by ABAQUS
The modeling module of ABAQUS software can effectively establish three-dimensional models, but most of them are suitable for three-dimensional model […]
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Research content of fatigue crack evolution of heavy load transmission gear
The fatigue crack evolution test and numerical simulation of transmission gears of heavy equipment are studied. The preparation of compact […]
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Stress intensity factor theory of root crack of heavy duty gear teeth
The characteristics of crack propagation under the influence of external force factors are as follows: 1) The crack surface is […]
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Research background of fatigue state of heavy load transmission gears
The transmission gear of heavy equipment has low rotation speed in the process of transmission operation, but needs to bear […]
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Fatigue life prediction of heavy load transmission gear by bending test
Through verification, 40 test data under 5 load levels meet the requirements of lognormal distribution. Therefore, the distribution function f […]
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Dynamic research on bending fatigue of heavy duty transmission gears
J. Kmmberger proposed that it is necessary to carry out anti fatigue design for mechanical components bearing periodic load. Therefore, […]
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Heavy load transmission gear test device
According to the differences of loading methods, structural types and working modes of gear test devices, they can be divided […]
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Study on bending fatigue of heavy load transmission gears
Robert Basan proposed a mathematical model of slip line contact and a multiaxial fatigue life calculation model based on Fatemi […]
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Test methods for heavy duty transmission gears
The main form of gear failure is bending fatigue failure. According to the failure physical stress intensity model, it is […]
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Research and development of bending fatigue of heavy duty transmission gears
He Xiaohua of Chongqing University analyzed and studied the bending fatigue strength of 20CrMoH gear. Combined with mathematical statistics theory […]
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Analysis on distribution law of stress intensity factor at crack tip of heavy load transmission gear
As an important index of engineering fracture analysis, stress intensity factor is adopted by most scholars. The proposal of stress […]
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Research status of bending fatigue of heavy load transmission gears
At present, the research of gear bending fatigue reliability test mainly focuses on how to improve the bearing capacity of […]
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Prediction of crack propagation life of heavy duty transmission gears under different stress ratios
Multiply both sides of Paris formula by Da and integrate to obtain the formula: By substituting the stress ratio r […]
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Study on compound mode crack of heavy load transmission gear
The research on the method of compound mode crack propagation is mainly through numerical simulation and experimental research. For the […]
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Nephogram of maximum principal strain at crack tip of heavy load transmission gear under different crack lengths
Comparing the solid line and dotted line in Figure 1, for the same material, the value of plane stress under […]
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Study on fatigue crack propagation of heavy load transmission gear
Yang carried out a series of fatigue tests on C45 steel samples with local surface cracks. The effects of carburizing […]
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Mesh generation of dynamic crack propagation model of heavy load transmission gear
As the carrier of simulation calculation, grid plays a decisive role in the quality of simulation results. The selection of […]
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Research status of fatigue crack propagation of heavy load transmission gears
Due to the importance of small fatigue cracks, many researchers at home and abroad have carried out extensive research on […]
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Experimental study on fatigue crack growth rate of heavy transmission gear under different stress ratios
1) Define the ultimate load and maximum fatigue load The sample is fixed on the fixture by two round pins. […]
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Stress and displacement of different types of cracks in heavy load transmission gears
Different types of cracks have their own stress and displacement: type 1 crack is subjected to tensile stress perpendicular to […]
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Generation of fatigue source of heavy load transmission gear
The whole fatigue process includes three stages: crack initiation, crack propagation and fracture failure caused by final instability propagation. The […]
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Three stages of fatigue fracture of heavy load transmission gears
The fatigue fracture process of metal materials can be divided into three stages: crack initiation, propagation and instantaneous fracture. In […]
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Fatigue crack propagation law formula of heavy load transmission gear
According to the formula, the stress intensity factors Ki, Kii and kiII are mainly used to characterize the stress field […]
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Fatigue crack propagation law of heavy load transmission gear
At present, the research on the law of fatigue crack growth mainly uses experimental methods and numerical analysis methods. According […]
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Research innovation of fatigue crack and data simulation of heavy load transmission gear
1) 42CrMo steel was studied by means of experiment and simulation, and various factors affecting fatigue crack propagation under different […]