Structure Optimization for Backrest Frame of CRH Seat Based on DOE Analysis

Abstract:

The stiffness of the seat from CRH high speed train was studied. First, FEM analysis was performed on the entire seat and the backrest frame. Results showed that the backrest frame accounts for most of the seat’s deformation. Then a three factors and three levels orthogonal experiment was designed to find which component affects the stiffness of backrest. From the results of nine experiments, conclusion that side beams have the high sensitivity on seat stiffness. Finally, size optimization was carried on to find best cross section of the side beam. The FEM analysis of new design showed that the maximum deformation of the seat was 9.27mm, decreased by 24.1% compared with original design

• Periodical: Advanced Materials Research (Volumes 430-432)
• Pages: 2071-2074
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.430-432.2071
• Online since: January 2012
• Authors: Li Hui Zhao, Ying Long Tao
• Keywords: Backrest, DOE Analysis, Finite Element Method (FEM), Size Optimization

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