关键词: 轨道, 频域, 系统工程, 验证, 振动

Abstract: From the systems engineering point of view, the random vibration characteristics of track structure are simulated and the simulation results are verified with the field experiments on frequency domain method in this paper. Results show that vibration energy of rail is concentrated nearby 1 300 Hz and energies in low and medium frequency are mainly reflected in the vibrations of sleeper and ballast. In total frequency domain, it is good correlation in power spectral density of track accelerations between simulation and experiment and the difference in awerage accelerations of track structure with two type results is not obvious.

Key words: Frequency domain, Systems engineering, Track, Verification, Vibration