The Design of Bullet Train Process Bogie and the Finite Element Analysis of Frame Strength

Abstract

The process bogie is a special equipment for bullet train maintenance. Frame is the main the main load-bearing frame in the process bogie, and its fatigue strength directly affects the safety performance of the entire process bogie. According to the actual maintenance needs, the project design a process bogie. Using the finite element analysis software ANSYS, the finite element model of frame is established, and the frame strength and rigidity is analyzed. Referring to the "Bullet train bogie frame strength test method" (TB/T2368-2005) and the Ministry of Railways standard "Railway vehicles strength design and test standard" (TB/T1335-1996), the frame strength is assessed. The analysis results are consistent with the practical application. Introduction With the rapid economic development of China, the development of high-speed railway has now entered a new stage. The safe and stable operation of bullet Train is becoming more and more important. Usually, the daily maintenance of the bullet train is implemented through putting the entire column into the overhaul base for simple maintenance and repair work, but the separation of the bullet train's body and bogie is needed when the maintenance level reaches three and above, so there is a need to develop a set of equipment which can carry traction body and enable the body to move between different locations. The bullet train's process bogie is an special equipment which replaces the high-speed bogie of EMU and supports the train body to move between maintenance areas in the process state when different CRH electrical multiple units are in the process of decoding and overhaul, and different maintenance tasks of the high-speed bogie and the train body can be achieved as a result. Truss is one of the key components of process bogie, and it not only is the skeleton of the installation of various parts but also bears and passes the alternating vertical force, horizontal force and longitudinal force. The fatigue strength of truss directly affects the safety of the entire process bogie and is of great importance to the safety, reliability and economy of the railway locomotive vehicle maintenance. Therefore, according to the ministry of railway's standard-Power bogie frame strength test method TB/T2368-2005) and Railway vehicle strength design and test specification (TB/T1335-1996), static strength and fatigue strength of the process bogie's frame are analysed and the results can provide insight into the performance of the process bogie frame.