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Dynamic modeling of a multilayer rotating blade via quadratic layerwise theory

机译：基于二次分层理论的多层旋转叶片动力学建模

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摘要

A novel dynamic model for a multilayer rotating blade mounted at an arbitrary stagger angle using a quadratic layerwise theory is developed to study structural dynamics of the blade, particularly damping properties, using various coating layer configurations. A reduced two-dimensional (2D) model is used to describe the dynamic behavior of each layer in the weak form, while the quadratic layerwise theory is applied to interpolate the transverse shear stresses along the thickness direction. Results of numerical simulations with the reduced 2D model are compared to the full three-dimensional (3D) model showing an excellent agreement, comparable to the cubic layerwise theory, for both modal analysis and frequency response calculations. Moreover, damping analyses are performed on two types of multilayer blades: two-layer (free damping) and three-layer (constrained layer), in both non-rotating and rotating situations, and, parametric analyses with varying coating thickness and rotation speed are carried out. It is shown that damping decreases as the rotation speed increases due to inertial and Coriolis effects. Furthermore, frequency loci veering as a result of the rotation speed is observed. The proposed model gives an efficient and accurate way to study the dynamic behavior of rotating multilayer structures, such as compressor blades.
机译：开发了一种新颖的动力学模型，用于使用二次分层理论以任意交错角安装在多层旋转叶片上，以研究叶片的结构动力学，尤其是阻尼特性，并使用各种涂层构造。简化的二维（2D）模型用于描述薄层中每一层的动力行为，而二次分层理论则用于沿厚度方向内插横向剪切应力。使用简化的2D模型进行数值模拟的结果与完整的三维（3D）模型进行了比较，显示出与立方分层理论相当的模态分析和频率响应计算方面的一致性。此外，在非旋转和旋转两种情况下，都对两种类型的多层叶片进行了阻尼分析：两层（自由阻尼）和三层（约束层），并且具有变化的涂层厚度和转速的参数分析为执行。结果表明，由于惯性和科里奥利效应，阻尼随着转速的增加而减小。此外，观察到由于转速而导致的频率轨迹变化。所提出的模型为研究旋转多层结构（例如压缩机叶片）的动态行为提供了一种有效而准确的方法。

著录项

  • 来源
    《Composite Structures》 |2013年第5期|276-287|共12页
  • 作者

    Jia Sun; Ines Lopez Arteaga; Leif Kari;

  • 作者单位

    KTH Royal Institute of Technology, The Marcus Wallenberg Laboratory for Sound and Vibration Research (MWL), 100 44 Stockholm, Sweden;

    KTH Royal Institute of Technology, The Marcus Wallenberg Laboratory for Sound and Vibration Research (MWL), 100 44 Stockholm, Sweden,Eindhoven University of Technology, Department of Mechanical Engineering, Dynamics and Control P.O. Box 513, 5600 MB Eindhoven, The Netherlands;

    KTH Royal Institute of Technology, The Marcus Wallenberg Laboratory for Sound and Vibration Research (MWL), 100 44 Stockholm, Sweden;

  • 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

    layerwise; rotating blade; damping; veering;

    机译：逐层旋转刀片阻尼转向;

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