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首页> 外文期刊>Aerospace science and technology >Perforation of aero-engine fan casing by a single rotating blade
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Perforation of aero-engine fan casing by a single rotating blade

机译：单个旋转叶片在航空发动机风扇壳体上打孔

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摘要

To study the mechanism of the aero-engine fan blade/casing impact process, experiments on high-speed spin tester and numerical simulations employing a sufficiently fine mesh and suitable material relations were carried out. Numerical results were in good agreement with the experimental data. The fan casing was perforated under the impact of the blade which was released from the root. The whole impact process can be divided into three stages: the first stage is the released blade scratching the inner wall of the containment area; the second stage is bulge formation and cracking on the casing; and the third is the tearing of the casing along the ribs and the bending of the torn bands. The cracking of the bulge is induced by biaxial tension and the bulge formation is the main energy absorption mode of the casing. In addition, effects of stress initialization on numerical results are assessed according to the interaction force, strain and kinetic energies, and it is found that the stress initialization effects are negligible for this particular problem.%High-speed Rotating Machinery Laboratory, Faculty of Engineering, Zhejiang University, Hangzhou 310027, China;High-speed Rotating Machinery Laboratory, Faculty of Engineering, Zhejiang University, Hangzhou 310027, China;High-speed Rotating Machinery Laboratory, Faculty of Engineering, Zhejiang University, Hangzhou 310027, China;High-speed Rotating Machinery Laboratory, Faculty of Engineering, Zhejiang University, Hangzhou 310027, China;High-speed Rotating Machinery Laboratory, Faculty of Engineering, Zhejiang University, Hangzhou 310027, China;
机译：为了研究航空发动机风扇叶片/壳体撞击过程的机理，进行了高速旋转测试仪的实验以及采用足够细的网格和合适的材料关系的数值模拟。数值结果与实验数据吻合良好。风扇外壳在从根部释放的叶片的冲击下穿孔。整个冲击过程可分为三个阶段：第一阶段是释放的刮刀刮擦容纳区域的内壁；第二阶段是释放刮刀。第二阶段是隆起形成和套管破裂。第三是外壳沿肋的撕裂和撕裂带的弯曲。隆起的裂纹是由双轴张力引起的，隆起的形成是壳体的主要能量吸收方式。此外，根据相互作用力，应变和动能评估了应力初始化对数值结果的影响，发现应力初始化作用对于这个特定问题可以忽略不计。％高速旋转机械实验室，工程学院浙江大学，杭州310027；浙江大学工程学院高速旋转机械实验室，杭州310027；浙江大学工程学院高速旋转机械实验室，杭州310027；高速浙江大学工程学院旋转机械实验室，杭州310027；浙江大学工程学院高速旋转机械实验室，杭州310027；

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  • 来源
    《Aerospace science and technology》 |2013年第1期|234-241|共8页
  • 作者

    Qing He; Haijun Xuan; Lulu Liu; Weirong Hong; Rongren Wu;

  • 作者单位

    High-speed Rotating Machinery Laboratory, Faculty of Engineering, Zhejiang University, Hangzhou 310027, China;

    High-speed Rotating Machinery Laboratory, Faculty of Engineering, Zhejiang University, Hangzhou 310027, China;

    High-speed Rotating Machinery Laboratory, Faculty of Engineering, Zhejiang University, Hangzhou 310027, China;

    High-speed Rotating Machinery Laboratory, Faculty of Engineering, Zhejiang University, Hangzhou 310027, China;

    High-speed Rotating Machinery Laboratory, Faculty of Engineering, Zhejiang University, Hangzhou 310027, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    aero-engine; fan casing; blade containment test; numerical analysis; energy absorption mechanism;

    机译：航空发动机风扇外壳叶片密闭性测试;数值分析;能量吸收机制;

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