Track Dynamic Response Probability Analysis for Random Vibration of High—-speed Railway
[1]LOU Ping,ZHAO Yongchao.Track Dynamic Response Probability Analysis for Random Vibration of High—-speed Railway[J].Journal of Zhengzhou University (Engineering Science),2010,31(02):59-.
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
31卷
Number of periods:
2010 No.02
Page number:
59-
Column:
Public date:
2010-02-02
- Title:
- Track Dynamic Response Probability Analysis for Random Vibration of High—-speed Railway
- CLC:
- -
- DOI:
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- Abstract:
- Vehicle and track are considered as an entire system．The vertical equations of motion for a vehicle——track system are formulated by the principle of total potential energy with stationary value in elastic systemdynamics and the“set—in right—position”rule for formulating matrices．The random irregularity of the rail isconsidered．The dynamic response of train at five different speed levels excited by the irregularity of track areobtained．The maximum dynamic response of each speed is considered asample observations of the randomvariable．The samples are regarded as random variable which is used in the probability analysis．The resultsindicate that the random variables of the maximum displacement and acceleration of rails and track slabs，themaximum wheel acceleration，and the maximum wheel—rail force all fall into normal distribution．With theincrease of train speed，the mean of random variable maximum value of wheel—rail force and the mean of ran·dom variables maximum value of the track dynamic response also increased．
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Last Update:
1900-01-01