Strength simulation of metro train bogie frame using edge-based and face-based smoothed finite element method

Purpose This research aims to apply the smoothed finite element method (S-FEM) to perform the static strength analysis of a metro train bogie frame and to investigate its computational accuracy when compared to the traditional FEM. Design/methodology/approach The S-FEM, known for enhancing numerical simulation accuracy using linear tetrahedral elements, is applied to analyze the complexity of the bogie frame. A three-dimensional structure model of a metro bogie frame is constructed, and various loading conditions are simulated to assess its strength. In this study, we adopt the edge-based smoothed finite element method (ES-FEM) and the face-based smoothed finite element method (FS-FEM) and validate them using relevant standards. Stress and deformation distributions of the bogie frame are analyzed to ensure compliance with strength requirements. Findings Comparative analyses with the conventional FEM demonstrate that the S-FEM yields superior accuracy and convergence results in predicting the static strength of the bogie frame. Originality/value This research provides an in-depth analysis of the strength of a complex structure like the bogie frame using S-FEM specifically the ES-FEM and FS-FEM. The S-FEM serves as an effective and accurate approach for static strength analysis of mechanical structures and their practical applications in engineering design and analysis.