Objective Traction rod seat connection structure (TrsCs) is an important component in the sandwich structure of high-speed maglev trains. To meet the maglev trains operating requirements, it is necessary to conduct an in-depth study of the fatigue characteristics of TrsCs under different working conditions during the design stage.

Method Taking the TrsCs of high-speed maglev trains as the research object, a finite element model of TrsCs is established using Hypermesh and ABAQUS finite element software. A fatigue life simulation analysis is carried out using FE-SAFE software, and the main performance characteristics such as stress-strain distribution and fatigue life of TrsCs under different working conditions are obtained. Through full-scale bench fatigue tests of TrsCs, the simulation results are compared and analyzed with the experimental test results, and the effectiveness of the finite element analysis method is evaluated.

Result & Conclusion  The structural scheme of TrsCs meets the design requirements. The simulation calculation results show good agreement with experimental test results, verifying the accuracy of the finite element model of TrsCs. The U-shape connecting plate of TrsCs bears smaller loads and has a larger safety margin, indicating certain optimization potential; its wall thickness can be considered to reduce to 4 mm.