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故障工况下常导磁浮车辆悬浮架载荷特性研究
Research on load characteristics of levitation chassis of the normal-conducting maglev vehicle under fault conditions
- 机车电传动 2023年第1期 页码：33-41
- 作者机构：
1.西南交通大学 机械工程学院，四川 成都 610031
2.西南交通大学 牵引动力国家重点实验室，四川 成都;610031
- 作者简介：
吴兴文（1988—），男，博士，副教授，硕士生导师，主要从事车辆系统动力学、结构振动疲劳和车辆系统智能运维方面的研究； E-mail: xingwen_wu@163.com
- 基金信息：国家重点研发计划项目(2018YFE0201401-01);国家自然科学基金项目(51805450);中国科协青年人才托举工程项目(2019QNRC001);四川省基础研究计划项目(2020YJ0075)
DOI：10.13890/j.issn.1000-128X.2023.01.005
中图分类号： U237纸质出版日期：2023-01-10，
收稿日期：2022-07-06，
修回日期：2022-11-02，
- 稿件说明：
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曹辉, 吴兴文, 熊嘉阳, 等. 故障工况下常导磁浮车辆悬浮架载荷特性研究[J]. 机车电传动, 2023(1): 33-41.
CAO Hui, WU Xingwen, XIONG Jiayang, et al. Research on load characteristics of levitation chassis of the normal-conducting maglev vehicle under fault conditions[J]. Electric Drive for Locomotives, 2023(1): 33-41.
曹辉, 吴兴文, 熊嘉阳, 等. 故障工况下常导磁浮车辆悬浮架载荷特性研究[J]. 机车电传动, 2023(1): 33-41. DOI： 10.13890/j.issn.1000-128X.2023.01.005.
CAO Hui, WU Xingwen, XIONG Jiayang, et al. Research on load characteristics of levitation chassis of the normal-conducting maglev vehicle under fault conditions[J]. Electric Drive for Locomotives, 2023(1): 33-41. DOI： 10.13890/j.issn.1000-128X.2023.01.005.
摘要
针对中低速常导磁浮车辆运行过程中可能出现的故障工况，对悬浮架的载荷特性展开研究。首先根据实际参数建立动力学模型并分析其振动特性，研究了悬浮架构架在电磁铁失效、空气弹簧失效等故障工况下的位移特点；然后分析故障工况下悬浮架的载荷特性，并对悬浮架各部件的强度进行评估。研究结果表明：磁浮车辆的车体与悬浮架通过滑台间接相连，使得振动形式比较丰富；在电磁铁失效故障工况下，悬浮架构架质心的位移相对较大，与轨道碰撞后使得悬浮架载荷发生突变；相对于正常运行工况，左侧电磁铁失效时纵梁的应力最大值增长为原来的3.87倍，左后空簧失效和紧急落车时托臂的应力最大值分别增长为原来的2.59倍和8.11倍。对故障工况下悬浮架的载荷特性进行研究，可以为疲劳寿命计算和结构强度设计提供参考依据。
Abstract
Aiming at the potential failure conditions of the medium and low speed normal-conducting maglev vehicles during operation
the load characteristics of the levitation chassis were studied. Firstly
a dynamic model was established according to the actual parameters and the vibration characteristics were analyzed
to study the displacement characteristics of the levitation chassis under the fault conditions such as electromagnet failure and air spring failure. Then the load characteristics of the levitation chassis were analyzed under fault conditions; the strength of its parts was assessed. The results show that the maglev vehicle body and levitation chassis are connected indirectly by a sliding platform
leading to diversified vibration forms. Under the electromagnet failure condition
the levitation chassis under relatively large displacement at the centroid collides with the track
resulting in a sudden load change of the levitation chassis. Compared with the normal operating conditions
the stress of the longitudinal beam increases by 3.87 times to the maximum when the left electro-magnet fails
and the stress of the supporting arm increases by 2.59 times and 8.11 times to the maximum respectively when the left rear air spring fails and the emergency landing occurs. The current study on the load characteristics of the levitation chassis under fault conditions can provide a reference for the fatigue life calculation and structural strength design.
关键词
小型中低速常导磁浮车辆悬浮架故障工况载荷特性应力轨道不平顺
Keywords
medium and low speed normal-conducting small maglev vehiclelevitation chassisfault conditionload characteristicsstresstrack irregularity
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