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- W2385505523 abstract "The influence that the randomness of train parameters has on the train-bridge coupled random vibration cannot be ignored.Based on the train-bridge vertical coupled model and considering the randomness of a few train parameters including the train load,the stiffness and damping of primary suspension and secondary suspension,,this paper selected the disperse representative points from multi-dimensional random variables by utilizing the number theory collocation method,and subdivided the joint probability density of representative points of Voronoi area according to normal distribution,thus obtaining the initial probability assignment.Then the random dynamic equation for probability density evolution method was established,and by using MATLAB,the program for analysis of train-bridge coupled random vibration was developed.Eventually,the newmark-βintegration method and the double edge difference method of TVD format were adopted to obtain the mean value,the standard deviation and the distribution of the time dependent probability density evolution.Results show that compared to the Monte Carlo method,the probability density evolution method has a higher accuracy and computation efficiency,with efficiency being improved by 1~2order of magnitudes.The results also verify that the random load of vehicle body is one of the major causes that incur train-bridge random vibration.The effects that the random stiffness and damping of secondary suspension has on the train vertical vibration should not be neglected.The bridge deflection mean first increased and then decreased with train speed.The coefficient of variation of bridge deflection was affected by train speed." @default.
- W2385505523 created "2016-06-24" @default.
- W2385505523 creator A5082589664 @default.
- W2385505523 date "2015-01-01" @default.
- W2385505523 modified "2023-09-28" @default.
- W2385505523 title "The Stochastic Analysis of theTrack-bridge Vertical Coupled Vibration with Random Train Parameters" @default.
- W2385505523 hasPublicationYear "2015" @default.
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