Strength optimization of the output shaft in EPS

Strength optimization is important method to save material and improve the dynamic performance of parts. With the research object of the output shaft, the paper has established strength optimization model and used genetic algorithm method to solve the difference strength safely coefficients in each position of the output shaft. The results show that when the shaft, with maximum loading, has been optimized, the quality reduce 6.7 percent, the maximum deformation reduce 35%, the maximum strain decrease 1%, and the biggest stress decrease 1%.