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

机译:基于DOE分析的CRH座椅靠背框架结构优化

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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
机译:研究了CRH高速列车的座椅刚度,首先对整个座椅和靠背框架进行了有限元分析,结果表明靠背框架占了座椅的大部分变形,然后三个因素和三个水平正交通过九个实验的结果得出结论,侧梁对座椅的刚度具有较高的敏感性。最后,进行尺寸优化以找到最佳的侧梁横截面。新设计的有限元分析表明,座椅的最大变形为9.27mm,比原始设计降低了24.1%。

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