首页 | 本学科首页   官方微博 | 高级检索  
     检索      

鸟撞作用下的叶片丢失及包容数值模拟
引用本文:蒋向华,王延荣,桂幸民.鸟撞作用下的叶片丢失及包容数值模拟[J].航空动力学报,2008,23(12):2208-2213.
作者姓名:蒋向华  王延荣  桂幸民
作者单位:北京航空航天大学能源与动力工程学院航空发动机数值仿真研究中心;
摘    要:利用MSC软件,建立了鸟撞航空发动机叶片转子级的有限元模型,采用流固耦合及接触算法,分析了鸟撞导致叶片破裂丢失以及机匣包容的过程,模拟了机匣结构特性差异及其影响.计算结果表明,质量(动能)较大的整片叶片丢失容易击穿机匣,并可能引起新的叶片丢失及包容性问题(二次损伤);而部分叶片断裂丢失的影响较小,一般不会击穿机匣,也难以引发二次损伤.整个过程复杂多变,运动、变形、破坏及能量交换等多因素并存.

关 键 词:鸟撞  包容  流固耦合  
收稿时间:2007/12/3 0:00:00
修稿时间:5/6/2008 12:00:00 AM

Numerical simulation on blade loss caused by bird-impact and casing containment
JIANG Xiang-hu,WANG Yan-rong and GUI Xing-min.Numerical simulation on blade loss caused by bird-impact and casing containment[J].Journal of Aerospace Power,2008,23(12):2208-2213.
Authors:JIANG Xiang-hu  WANG Yan-rong and GUI Xing-min
Institution:Aeroengine Numerical Simulation Research Center, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;Aeroengine Numerical Simulation Research Center, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;Aeroengine Numerical Simulation Research Center, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
Abstract:Bird impact on an aeroengine rotating stage may cause the blades split and hit the engine casing subsequently.This phenomenon was studied here by using MSC software.The result shows the entire blade loss involving large mass provides a high possibility of punching through the casing.This rushing blade may collide with other blades and trigger new blade loss and containment problems(secondary damage).Partially broken blade loss could also exist,but this kind of accident is less critical at most of time,which...
Keywords:bird impact  casing containment  fluid-solid coupling  
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《航空动力学报》浏览原始摘要信息
点击此处可从《航空动力学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号