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Propagation analysis of root crack of spur gear

Based on linear elastic fracture mechanics, the crack propagation and life of spur gear root are studied by using the joint simulation technology of ANSYS and FRANC3D. The main conclusions are as follows. (1) At the beginning, the research status of fracture mechanics is introduced, and the research status...

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Cracking of bevel gear of mine reducer

18CrNiMo7-6 belongs to low carbon and low alloy carburized steel. It is mainly used to manufacture bevel gears of wind power transmission, electric locomotives of heavy-duty trains, large modulus bevel gears, heavy-duty bevel gears and other parts. The bevel gear shaft is prone to cracking in the process of...

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Effect of initial crack location on fatigue life of spur gear

The factors affecting crack growth studied by ZHY gear senior engineer team, such as stress ratio, corrosion environment, crack body size and initial crack size, are introduced. When studying the fatigue life and crack propagation law of pressure vessel, the influence of long short axis ratio of semi elliptical...

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Prediction of fatigue life of spur gears

Within the range of elastic mechanics, Paris gives the fatigue crack growth rate of spur gear expressed by the formula, and deforms the formula to obtain: By integrating both sides of the formula at the same time, the formula for calculating the fatigue crack propagation life of spur gear...

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Fatigue crack growth rate of spur gear

Within the scope of on-line elasticity, the theory of fatigue crack growth rate of spur gear is mainly Paris theory. On this basis, scholars continue to forge ahead and have made some achievements. At present, Paris theory is the most widely used and mature model to study the fatigue...

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Three dimensional crack propagation analysis of spur gear root

Spur gears are widely used in electric power, chemical industry, petroleum, aerospace, automobile and other fields. Almost all these spur gears yield to cyclic load. With the development of modern industry towards high precision, high efficiency and integration, the requirements for spur gears are higher and higher. With this...

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