车辆-有砟轨道-路基空间耦合动力学方法、装置及设备
By employing a three-dimensional spatial coupled dynamics method, combined with the discrete element method and the finite difference method, a refined analysis of the vehicle-ballast track-subgrade system was achieved. This solves the problem of incomplete simulation in existing methods and provides more reliable analysis results and construction and maintenance guidance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN UNIV
- Filing Date
- 2023-03-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing vehicle-ballast track spatial coupling dynamics calculation methods cannot simulate the complex geometry and granular characteristics of ballast, cannot analyze the mechanical behavior of ballast particles such as collision, rotation, misalignment and flow, and cannot consider the porosity, density and compactness of the track bed structure, resulting in unreliable and incomplete analysis results.
A spatial coupling dynamics method is adopted, which uses a three-dimensional vehicle model, a three-dimensional ballasted track model, and a three-dimensional roadbed model. The ballasted track model is established by using the discrete element method, and the roadbed continuous medium model is established by combining the finite difference method. Refined modeling and simulation calculations are performed to analyze the interaction between vehicles, tracks and roadbed.
To effectively study the spatial dynamic interaction mechanism of vehicles, ballasted track, and subgrade, to understand the micro- and macro-mechanical behavior of ballasted track and the evolution of its service status, and to provide theoretical guidance for the construction and maintenance of ballasted track and subgrade.
Smart Images
Figure CN116362089B_ABST