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Abstract
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%.
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Details
1 School of Rolling Stock Engineering, Dalian Jiaotong University, Dalian, Liaoning, China