Open AccessResearch on modal analysis method of Multiple Units car body in the preparation conditions
Author(s) -
Yana Li,
Shuo Li
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1820/1/012095
Subject(s) - bogie , modal analysis , modal , bending , vibration , structural engineering , frame (networking) , computer science , automotive engineering , stability (learning theory) , engineering , finite element method , mechanical engineering , acoustics , materials science , physics , composite material , machine learning
The first-order vertical bending frequency is an important parameter to evaluate the vibration performance of car body in the preparation conditions. Increasing its frequency value can avoid the resonance between the car body and the bogie frame, reduce the vibration, and improve the running stability and riding comfort. Due to the low first-order vertical bending frequency, combined with layout optimization of equipment under vehicle and structure optimization, the optimal equipment layout scheme and the thickness of the key parts were obtained based on the refined modeling. The first-order vertical bending frequency of car body was increased from 7.63Hz to 8.35Hz, which was increased by 9.4%.