Chapter
Apr 26, 2012
Analyses of Vertical Dynamic Properties of Ballastless Track Based on LS-DYNA
Authors: Peigang Li [email protected]., Xueyi Liu, and Xiaojian Fu [email protected]Author Affiliations
Publication: ICTE 2011
Abstract
To solve the violent vertical vibration of ballastless track under high-speed travelling loads, a vertical vehicle-ballastless track coupling system was established, based on multi-body system dynamics theory, wheel-rail system dynamics theory and finite-element method. This paper used the general explicit dynamic analyzing program LS-DYNA, and took a roughness of solder joints of high-speed railway and the random excitation of Germany-low-disturbance-spectrum as the dynamic vibrating motivation, to calculate the vertical dynamic properties of ballastless track under moving vehicle at a speed of 350 km/h, and to compare the simulation results with field test results. The comparisons confirm the feasibility of LS-DYNA in ballastless track simulation, and provide a practical method for further dynamic analysis and parameter studies on high-speed ballastless track.
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© 2011 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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ASCE Technical Topics:
- Analysis (by type)
- Continuum mechanics
- Dynamic analysis
- Dynamic loads
- Dynamic properties
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Finite element method
- Infrastructure
- Methodology (by type)
- Motion (dynamics)
- Numerical methods
- Rail transportation
- Railroad tracks
- Solid mechanics
- Static loads
- Statics (mechanics)
- Structural behavior
- Structural dynamics
- Structural engineering
- Transportation engineering
- Vehicle loads
- Vertical loads
- Vibration
Authors
Affiliations
MOE Key Laboratory of High-speed Railway Engineering, Southwest Jiaotong University, Chengdu610031, China.E-mail: [email protected].
Xueyi Liu
MOE Key Laboratory of High-speed Railway Engineering, Southwest Jiaotong University, Chengdu610031, China.
Mechanical Laboratory of Lille, Ecole Centrale de Lille, 59650 Villeneuve d'Ascq, France.E-mail: [email protected]
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