Resonance Reliability and Sensitivity Analysis of Reducer

Abstract

Cranes often work under conditions of large power, high torque, and impact loading. Due to the harsh working environment, it is necessary to have reliability analysis for the reducer. Taking the reducer as study object, its parametric model and the reliability analysis model are established by ANSYS software. The constrained modal analysis was done to obtain the natural frequency of gear system. Considering random variation in parameters such as rib thickness, thickness and width of the U-shaped support frame, material elastic modulus and Poisson ratio, the proximity of system natural frequency and excitation frequency will be different. Then, the rules were explored by means of response surface methodology. On this basis, the reliability and sensitivity of the gear system are achieved statistically by Monte Carlo method, which has important engineering significance for improving the reliability of crane.