Fuzzy Multi-Objective Structural Optimization Design of Reducer Housing for Oil Tea Fruit Shelling Machine

Abstract

In order to reduce the weight of the reducer housing and improve the structural performance of the housing, a fatigue-resistant lightweight design method in consideration of multi-source uncertainties was proposed. The numerical transient response analysis was utilized to analyze the dynamic characteristics of the cast iron reducer housing, and the simulation results were in good agreement with the experimental data. The stiffness fuzzy multi-objective topology optimization function was constructed with three static conditions and third-order dynamic frequencies based on the fuzzy variable weight coefficients, the fuzzy multi-objective topology optimization design was carried out on the reducer housing to obtain the new reducer housing. Then, the anti-fatigue and lightweight co-optimization design of the rebuilt reducer housing considering multi-sources uncertainties was performed. The optimized results showed that the weight was reduced by 13.2% while under the premise of ensuring the fatigue life.

Keywords

• anti-fatigue and lightweight co-optimization
• fuzzy variable weight coefficient
• multi-objective optimization
• multi-sources uncertainties