METHOD FOR REALIZING VIBRATION AND NOISE SIMULATION LOAD OF VEHICLE DEPOT

WIPO Patent Application WO/2024/082486

A1

Disclosed in the present invention is a method for realizing a vibration and noise simulation load of a vehicle depot. The method comprises the following steps: obtaining an actually-measured value of the acceleration of a steel rail and an actually-measured value of the acceleration of a propagation path; expanding the actually-measured value of the acceleration of the steel rail into an infinite series composed of a multiple-frequency sine function and cosine function to obtain a preprocessed acceleration of the steel rail; establishing motion equilibrium equations of a vehicle body and a suspension system; solving the motion equilibrium equations, and using D'Alembert's principle to transform the motion equilibrium equations into static equilibrium equations, and calculating a bogie load; substituting train-related parameters into a bogie load expression, and correcting a bogie vibration load to obtain a uniformly distributed load, which is uniformly distributed in a longitudinal direction of the rail; and establishing a finite-element simulation analysis model, and correcting the uniformly distributed load to obtain a vibration and noise simulation load of a vehicle depot. By means of the present invention, loads in acceleration and deceleration states can be accurately calculated, such that simulated operating conditions are more comprehensive, and a calculation result is more accurate.

HE BIN (CN)
LIU JIZHAO (CN)
QI CHUNYU (CN)
HU WENLIN (CN)
JIANG BOLONG (CN)
WANG SHAOLIN (CN)
CHEN JIANGXUE (CN)
SONG ZHENAN (CN)
YANG GUISHENG (CN)
TAN DAZHENG (CN)
CHENG BAOQING (CN)

PCT/CN2023/074532

April 25, 2024

February 06, 2023

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CHINA RAILWAY DESIGN CORP (CN)

G06F30/23

TIANJIN SAILING IP AGENCY (CN)

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