Structure optimization and reliability evaluation of folding ferry plate

Abstract

Folding ferry plate is a bearing connection device, which often undergoes large deformation when carrying large mechanical equipment, and excessive quality increases the consumption of materials. To improve the stiffness and reduce the quality of the folding ferry plate, the folding ferry plate is optimized. Whether the optimized structure meets the requirements or not needs to be evaluated. To determine the folding ferry plate model with better performance, three key influencing factors are selected as experimental variables, and the orthogonal experimental design of the folding ferry plate model with three key factors and four levels is carried out. The influence of different key factors on the quality and deformation of the folding ferry plate is studied, and the optimal combination scheme of different factors is determined. Based on the total mass, deformation and the first, second and third natural frequencies of the folded ferry plate, the model state index method is used to evaluate the reliability of the structure before and after optimization. The results show that the quality of folding ferry plate can be reduced by 1.76 % and the deformation can be reduced by 15.56 % by selecting the optimal combination scheme, which realizes the optimization of folding ferry plate performance and improves the reliability of folding ferry plate after the orthogonal experiment.