Study on Stiffness Characteristics of Rubber Springs for Rail Vehicles Based on Different Constitutive Models
Journal Title: Urban Mass Transit - Year 2025, Vol 28, Issue 3
Abstract
［Objective］ The structure of rubber spring shock absorbers for rail transit is complex, its stiffness characteristics are mainly predicted by simulation methods, but simulation results of different constitutive models vary greatly. The Yeoh, Mooney-Rivlin and Ogden three strain energy density function models of hyperelastic rubber materials and their applicable scenarios are compared and analyzed. Using the primary rubber spring in the bogie of rail transit vehicles as the research object, the installation methods, functional characteristics, structural composition, and performance requirements are expounded, the best from them are selected. ［Method］ A finite element analysis method for the static stiffness characteristics of primary rubber springs is established. The fitting effectiveness and computational accuracy of three constitutive models for hyperelastic rubber materials are evaluated using the fit of force-displacement curves and stiffness deviation as assessment metrics. ［Result & Conclusion］ The results show that the deviation between the simulated values calaclated using the Yeoh model and the experimental values is significant, follow by deviations of Mooney-Rivlin matel and Ogden model, but both the fitting effect and the computational accuracy of Ogden model are optimal. Therefore, the Ogden model is more suitable for analyzing the mechanical performance of the static stiffness characteristics of primary rubber springs in rail transit vehicle bogies.
Authors and Affiliations
Mengjun DENG, Xili WANG, Zhangyang XIA, Yuxiang ZHANG, Jun LUO
Keywords
Related Articles
- EP ID EP760151
- DOI 10.16037/j.1007-869x.2025.03.031
- Views 29
- Downloads 0
Construction Scheme with Non-stop Aviation for Large-diameter Shield Tunnel Crossing Airport Flight Zone in Karst Area
[Objective] To achieve non-stop aviation during the construction of a large-diameter shield tunnel crossing the airport flight zone in karst area, it is essential to study the construction scheme with non-stop aviation....
Fracture Cause Analysis and Treatment Effect for Urban Rail Transit Vibration Damping Track DI-type Elastic Strip
Objective Elastic strip is a critical component of rail vibration reduction fasteners, its mechanical performance and fatigue-load bearing capacity are crucial for urban rail transit train operational safety and track se...
Research Focus at Different Stages of Urban Rail Transit Prophase Works in the New Era
[Objective] In the future, China′s urban development will shift from construction-orientation to governance-orientation. As an important part of the Chinese-style modern social governance system, urban planning is an imp...
Vibration Reduction Effect of Steel Spring Floating Slabs under Water Immersion Conditions
［Objective］ To address the issues of reduced vibration isolation performance of floating slabs under water immersion, it is necessary to study the impact of train operating speed and steel spring isolator stiffness on...
Study on End Underframe Fatigue Life of a Certain Type of Metro Train
Objective The car body of metro vehicle is a welded structure, and its fatigue strength is obviously smaller than that of the base metal due to the influence of stress concentration, welding defects and welding residual...