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徐雪,李宏新,冯国全.Trent 900发动机风扇叶片飞失后低压转子动力学行为仿真[J].航空动力学报,2020,(4):744~756
Trent 900发动机风扇叶片飞失后低压转子动力学行为仿真
Low pressure rotor dynamic behavior simulation of Trent 900 engine after fan blade out
投稿时间:2019-08-20  
DOI:10.13224/j.cnki.jasp.2020.04.008
中文关键词:  Trent 900发动机  大涵道比  风扇叶片飞失  结构保险  瞬态动力学  结构仿真
英文关键词:Trent 900 engine  high bypass ratio  fan blade out  structural fuse  transient dynamic  structural simulation
基金项目:
作者单位
徐雪 Shenyang Engine Research Institute,,Aero Engine Corporation of China,Shenyang 110015,China
 
李宏新 Corporation Headquarter,Aero Engine Corporation of China,Beijing 100097,China 
冯国全 Shenyang Engine Research Institute,,Aero Engine Corporation of China,Shenyang 110015,China
 
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全文下载次数: 188
中文摘要:
      为深入理解三转子大涵道比涡扇发动机风扇叶片飞失情况下的低压转子及结构保险的动力学行为特征,选取Trent900发动机为研究对象,分析了对于风扇叶片飞失(FBO)有重要影响的结构设计特点,进而开展了转子之间动力学耦合影响、结构保险的模拟、风扇叶片简化方法研究。构建了满足Trent 900发动机FBO模拟的三维转/静子简化模型。完成了FBO之后转子旋转约360°的动力学行为模拟,并与Trent 900发动机公布的FBO试验录像进行了对比。结果表明:①仿真结果与FBO试验录像在宏观现象的时间顺序一致;②主结构保险完全失效后,外传振动载荷较失效前降低约45%;③次级结构保险为低压转子提供新的前支点并保护风扇轴。
英文摘要:
      To enhance the understanding of the dynamic behavior of the low pressure rotor and structural fuse in three-shaft high bypass ratio turbofan engine during a fan blade off (FBO) event, the Trent 900 was selected as the research sample.The structural characteristics which may cause important influence was analyzed, and the research on the influence of the dynamic coupling between the rotors, the simulation of structural fuse, and fan blade simplification was conducted. The three-dimensional rotor/stator simplified model for the FBO simulation was built. The simulation of 360 degree rotating of the fan rotor was performed and compared with the video of Trent 900 engine FBO rig test. The results revealed that: (1) the simulation results matched the video of FBO rig test in the time sequence of macro phenomena. (2) The breakage of main structural fuse can reduce the output vibration load by about 45%. (3) Secondary structural fuse can form a new front support for the low pressure rotor and protect the fan shaft.
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