Evaluation Method of Bogie Outer Positioning Anti-rolling Torsion Bar Structural Strength
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 7
Abstract
Objective In order to solve the TBS (torsion bar shaft) torsional stiffness and strength for the outer support anti-rolling device in railway vehicles, an analytical method of introducing the TBS deformation coordination conditions is proposed. Method Taking 1/2 TBS for the outer support anti-rolling device as an example, based on its stress state and load distribution, the structural symmetry and the characteristics of bearing anti-symmetric working loads are used to introduce structural deformation coordination conditions for solving the unknown forces and moments of a primary statically indeterminate system, obtaining the shear force and bending moment distribution of the TBS, and deriving calculation formulas for the torsional stiffness and strength of the anti-rolling torsion bar device. Using the outer support anti-rolling torsion bar device made of 52CrMoV4 spring steel as an example, a comparative analysis is conducted between the analytical solution calculation results and the finite element model calculation results of the outer support TBS. Result & Conclusion The proposed analytical solution method can conveniently determine the stress levels and stress states at different TBS cross-sectional positions, providing a theoretical basis for determining the TBS cross-sectional geometric parameters, the equivalent stress calculation method of different critical cross-sections, and the analysis of TBS fatigue failure mechanism. Compared with the finite element method, the proposed analytical method features simple calculation principle and fast calculation speed.
Authors and Affiliations
Jun LU, Xihong JIN, Zhengzhi LUO
Keywords
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- EP ID EP742586
- DOI 10.16037/j.1007-869x.2024.07.002
- Views 23
- Downloads 0
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