Flutter study on high speed train external windshield by a tight coupling method | |
Jiang Q(姜倩); Zheng GN(郑冠男); Zhao GL(赵桂林) | |
会议录名称 | ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019 |
2019 | |
会议名称 | ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019 |
会议日期 | July 28, 2019 - August 1, 2019 |
会议地点 | San Francisco, CA, United states |
摘要 | Flutter is a complex problem caused by the interaction between the elastic structure and the flow field around that. In this paper a study of flutter on high speed train external windshield is presented. Here, a coupling scheme of computational fluid dynamics (CFD) and computational structure dynamics (CSD) is applied to simulate the flutter problems. Specifically, some key technologies like tight coupling method, information transfer and mesh deformation strategy are involved. Repeatedly exchanging information in the sub-iteration of physical time step is basically typical of tight coupling method, which is a second-order accuracy method. This flutter methodology has been applied for standard model AGARD 445.6 wing and other engineering examples, with lots of excellent results obtained. In this high speed train external windshield flutter research, eight train speed conditions are chosen to simulate the flutter issue, including 250km/h, 300km/h, 350km/h, 400 km/h, 450 km/h, 500 km/h, 550 km/h and 600 km/h. As for structural model, the first 30 order modes of elastic windshield are taken into consideration for CFD/CSD coupling simulation. In addition, it is defined to be the flutter boundary once the generalized displacement curve performing as persistent oscillation, which is the critical stable state for the vibration of external windshield. According to the research, under a specific train speed condition, adjustment of modal eigenfrequency can lead to the change of vibration stability. Furthermore, it is found that there is a positive correlation between train speed and modal eigenfrequency. So the optimal windshield scheme under different operating speeds is proposed that in order for the convergent vibration, a measure of changing eigenfrequency can be taken to ensure the vibration convergent and flutter cannot occur. Copyright © 2019 ASME. |
关键词 | Flutter High speed train external windshield Tight coupling method Vibration |
ISBN号 | 9780791859032 |
URL | 查看原文 |
收录类别 | EI |
语种 | 英语 |
文献类型 | 会议论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/85110 |
专题 | 流固耦合系统力学重点实验室 |
作者单位 | 1.Key Laboratory for Mechanics in Fluid Solid Coupling Systems of Institute of Mechanics, CAS, Beijing, 100190, China 2.School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China |
推荐引用方式 GB/T 7714 | Jiang Q,Zheng GN,Zhao GL. Flutter study on high speed train external windshield by a tight coupling method[C]ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019,2019. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
Lanfanshu学术 |
Lanfanshu学术中相似的文章 |
[姜倩]的文章 |
[郑冠男]的文章 |
[赵桂林]的文章 |
百度学术 |
百度学术中相似的文章 |
[姜倩]的文章 |
[郑冠男]的文章 |
[赵桂林]的文章 |
必应学术 |
必应学术中相似的文章 |
[姜倩]的文章 |
[郑冠男]的文章 |
[赵桂林]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论