|Table of Contents|

Evolution of wheel wear and dynamics performance of heavy haul freight car(PDF)

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

Issue:
2016年05期
Page:
49-56
Research Field:
载运工具运用工程
Publishing date:

Info

Title:
Evolution of wheel wear and dynamics performance of heavy haul freight car
Author(s):
LI Heng-li1;  LI Fu1;  WANG Xin-rui2;  YANG Ji-zhen3
1. School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; 2. China Academy of Railway Sciences, Beijing 100010, China; 3. Global Engineering Technology Group, Beijing 100010, China
Keywords:
vehicle engineering;  heavy haul freight car;  dynamics performance;  wheel wear;  three-piece bogie;  Daqin Line
PACS:
U270.33
DOI:
-
Abstract:
The vehicle dynamics model considering wheel wear process was established based on a multi-body dynamics software of SIMPACK. The program of wheel/rail iterative automatic computation was programmed. Vehicle dynamics model, wheel/rail contact model, wheel/rail wear model, wheel/rail profile update and operation condition were integrated in the dynamics software. The subprogram embed in software SIMPACK was adopted to carry out the dynamics calculation and to organize the condition and data in wear process. The FASTSim algorithm was adopted to carry out the dynamics calculation of vehicle. Contact algorithm was adopted to carry out the wear calculation. The online automatic wear calculation cycle was formed without the co-simulation and data exchange of external program. Based on the operating environment of Daqin Lines for the C80B gondola, the evolution processes of wheel wear and dynamics performance during vehicle operation were studied. Analysis result indicates that the relationships between wheel tread wear depth, wheel full-section wear area and the operation mileage are both approximately linear, and wheel wear depth and wear area are about 1.68 mm and 100.63 mm2 per 100 000 km respectively. With the increase of operation mileage, the wheel wear and dynamics performance will deteriorates. With 250 000 km operation mileage, the vehicle lateral riding quality decreases from the “excellent” rank of new car to “good” rank, and the indexes of running safety such as derailment coefficient, wheel unloading rate and lateral wheelset force of negotiating, increase by at least 50% compared to new car. 16 figs, 22 refs.

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Last Update: 2016-10-20