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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 1300Hz 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: Track
Vibration Frequency domain Verification Systems engineering
CLC No: U211
高等学校博士点基金资助项目(20030613011).
Received 20040319, received in revised form 20050404
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