|Table of Contents|

Dynamics characteristics of rack railway guiding equipment(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2022年01期
Page:
122-132
Research Field:
道路与铁道工程
Publishing date:

Info

Title:
Dynamics characteristics of rack railway guiding equipment
Author(s):
CHEN Zai-gang1;  TANG Liang1;  YANG Ji-zhong2;  CHEN Zhi-hui2;  ZHAI Wan-ming1
(1. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; 2. China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, Sichuan, China)
Keywords:
rail vehicle;  rack railway;  finite element analysis;  guiding equipment;  vehicle-track coupling;  dynamics characteristic
PACS:
U234
DOI:
10.19818/j.cnki.1671-1637.2022.01.010
Abstract:
The coupled dynamics finite element model of the vehicle-rack railway guiding equipment(RRGE)was established by using the large finite element commercial software ABAQUS. The whole process of vehicle passing through the RRGE was simulated, and the dynamic interaction between the vehicle and the RRGE was analyzed. Considering the influences of different parameters, the dynamic performance response laws such as the vibration response, structural stress and dynamic contact force of rack railway guiding equipment were studied. Research results indicate that as the increase of the supporting spring preload, the rotating speeds of the gear increase to the value that matching the train speed more promptly. And generally the vibrations and dynamic stress of the synchronous section increase, while both the vibrations and dynamic stress of the entry section and the vibration of the calibration section decrease. The reasonable supporting spring preload should be determined by considering the effect of structural stress and vibration level comprehensively. For the calculation scenarios in this paper, the reasonable supporting spring preload is recommended to be 3 kN. The vibration speed, the root mean square of the vibration speed, the vibration acceleration, and the root mean square of the vibration acceleration reach their maximum values(e.g. 5.66 m·s-1, 1.31 m·s-1, 5 657.82 m·s-2, 479.36 m·s-2)under the condition that the supporting spring preload is 1 kN. As the increase of the initial rotating speed of the gear up to the train speed, the vertical vibration of the synchronous section varies little in general, and the longitudinal vibration decreases, indicating that it is better to set the initial rotating speed of the gear equal to the train speed. The impact force acting to the RRGE structure from the gear increases with the increase of train speed, therefore, the reasonable train speed passing by the RRGE should be determined by considering the factors comprehensively such as the impact vibration and the operation efficiency. For the calculated speeds of 5 and 10 km·h-1, it is recommended that the reasonable train speed passing by the RRGE should be 5 km·h-1 or less. 5 tabs, 15 figs, 30 refs.

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Last Update: 2022-03-20