Research based on thermal shock in gear temperature field and stress field

For the rapid development of machinery manufacturing, aerospace, the ships, and metallurgy, the requirements of reliability of gear transmission are more and more high. Generally, the gear under high speed and heavy load will bear a high heat load, while its temperature field distribution and variation are the main bases that calculate tooth deformation and determine whether the tooth surface glues or not. The article will calculate the temperature field of involutes cylindrical gear under the thermal shock and does a finite element simulation. It is believed that varied temperature field will produce concentrated thermal stress and larger thermal deformation; the heat shock because of temperature sharply changes will produce varied stress and strain field, thus the teeth of the thermal deformation becomes more complex. To reduce the influence of temperature, the gear design source can usually be compensated or process improvement adopted after processing.