Study on Fatigue Life Reliability of Vehicle Bogie Arm Positioning Node
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 6
Abstract
Objective Based on the virtual simulation fatigue test technology, fatigue life analysis and reliability evaluation of the bogie arm positioning node of a certain type of vehicle are carried out to improve the vehicle stability and guarantee the train operation safety. Method ABAQUS software is used to establish a finite element model of the arm positioning node and obtain the stress and strain data. FE-SAFE software is used to set the fatigue parameters of rubber material, simulate and analyze its fatigue life. Graph test method is used to test the distribution hypothesis of pseudo-failure fatigue life and to select the optimal life distribution. The relation between the life distribution parameters and the stress level is used to fit a proper functional relation and evaluate the reliability of the arm positioning node fatigue life under normal stress level. Result & Conclusion Under normal stress level, only the rubber bushing in arm positioning node will have fatigue damage. The bottom end of the rubber bushing is the area with the lowest pseudo-failure fatigue life value, and is also the area where the damage occurs first. On-site test and fatigue simulation results verify the accuracy of the finite element model of arm positioning node. The optimal normal life distribution is determined. Under normal stress level, the number of fatigue life cycles is about 210,000 when the reliability of the arm positioning node is 0.9.
Authors and Affiliations
Zhenglong GU, Yifan GE, Zihan WANG, Yating HU, Weiwei LIU, Yanhong LI
Keywords
Related Articles
- EP ID EP737742
- DOI 10.16037/j.1007-869x.2024.06.013
- Views 36
- Downloads 0
Propagation Law of Blast-induced Vibrations during Metro Tunnel Under-passing Existing Old Buildings
Objective There is limited research both in China and abroad on the blasting construction of metro tunnels under-crossing existing old buildings. Projects utilizing blasting excavation may pose safety concerns for nearby...
Real-Time Passenger Flow Monitoring System for Urban Rail Transit Based on Cloud Platform Architecture
［Objective］ In view of the shortcomings that the existing urban rail transit system unable meeting the requirements for passenger flow data real-time transmission, solutions for real-time passenger flow data transmissi...
Collaborative Optimization Model of Multi-station Land Development Based on Passenger Flow Benefit Improvement
［Objective］ The optimization and adjustment of development scale centered on urban rail transit stations is conducive to promoting the formation of an efficient and intensive urban spatial development model and improvi...
Analysis of Surrounding Rock Deformation in the Expansion Excavation Construction Process of Metro Interval Tunnel with Connecting Passage into Forming New Station
Objective The Cruise Home Port Station on Chongqing Rail Transit Line 9 is constructed from in-situ expansion of the existing interval tunnel (including a connecting passage). Due to the complex geological conditions, th...
Key Functions of Automated Depot under TACS System
Objective Under TACS (train autonomous control system), the key functions of automated depot significantly impact train operational efficiency. It is essential to study these critical functions in automated depot by focu...