Finite Element Analysis And Optimization Of Bogie Frame For A Certain Type

Bogie frame is one of the most important metro vehicles bearing parts, to ensure that parts can work normally and stably on the framework, it should have a certain strength and stiffness. Therefore, we choose the bogie frame as the main object of study, establishing the working conditions by combined with the standard of UIC 615-4 and EN13749, using finite element analysis software ANSYS Workbench to check the static strength and fatigue strength. Then, do the modal analysis and structural optimization. Its optimized design results showed that the quality of architecture in the original basis decreased by 2.84%. Its main contents are as follows:Firstly, calculated the extraordinary load, simulated operational load, simulated load of special operations of the bogie frame by based on the standard of UIC 615-4 of International Union of Railways. According to UIC 615-4 and EN13749 standard, established the load conditions. Additionally, 28 static strength analysis cases, 49 fatigue strength analysis cases.Secondly, used Pro/E 4.0 building a three-dimensional solid model of the bogie frame, and imported it into the finite element analysis software ANSYS Workbench to create the finite element model. Then, to calculate static strength and fatigue strength of the bogie frame by determining the load and boundary conditions. Then,using the fourth strength theory to assess static strength and using Goodman-smith graphs to assess fatigue strength. FEM results showed that the static strength and fatigue strength of bogie frame has met the design requirements.Thirdly, the modal analysis calculated the 15 natural frequencies and mode shapes by using the finite element model which has been established before. Modal analysis results showed that the lowest natural frequency appeared in the seventh bands, 33.443 HZ, it effectively avoiding the resonance phenomenon and meeting the design requirements.Forthly, with the results of the static strength, fatigue strength and modal analysis, to do the structural optimization. Its optimized design results showed that the quality of architecture in the original basis decreased by 2.84%, reaching the purpose of lightweight design.