Analyses of Vertical Dynamic Properties of Ballastless Track Based on LS-DYNA
暂无分享,去创建一个
To solve the violent vertical vibration of ballastless track under high-speed traveling loads, a vertical vehicle-ballastless track coupling system was established that was 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 vehicles 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.
[1] C. Esveld. Modern railway track , 1989 .
[2] Zhai Wanming. Application of Vehicle-Track Coupling Dynamics to Study on Settlement of Railway Tracks , 2007 .
[3] Branislav Verbic. INVESTIGATING THE DYNAMIC BEHAVIOUR OF RIGID TRACK. , 1997 .
[4] Wang Kaiyun,et al. Calculation and Assessment Analysis of the Dynamic Performance for Slab Track on Sui-Yu Railway , 2006 .
[5] Zhai Wan. Dynamic Properties of High Speed Railway Slab Tracks , 1999 .