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The equivalent modeling of hard-coating blisk based on mistuning identification

机译：基于雾化识别的硬涂层叶盘的等效建模

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In order to accurately capture the dynamic characteristics of the actual hard-coating blisk and reduce the computation cost, an equivalent finite element modeling method based on mistuning identification was proposed in this study. In this modeling method, virtual single-layer material blades were used to replace the hard-coating blades of multi-layer structure. Meanwhile, based on the mistuning identification theory, the equivalent elastic modulus, as the key parameter, was determined. In addition, the methods to generate the other two equivalent parameters (equivalent density and equivalent Poisson's ratio) were also proposed. Moreover, through the numerical and actual cases, the equivalent models were created by the proposed method respectively and the modal data of the equivalent models was compared and analyzed. Compared with the traditional finite element model (FEM), the structure of the equivalent model is simpler and the number of elements is smaller, however, for the modal data, the comparison results showed good correspondence of the equivalent model and the actual hard-coating blisk. (C) 2019 Elsevier Masson SAS. All rights reserved.
机译：为了准确地捕获实际的硬涂层大药丸的动态特性并降低计算成本，提出了一种基于雾化识别的等效有限元建模方法。在这种建模方法中，使用虚拟的单层材料刀片代替了多层结构的硬涂层刀片。同时，基于模糊识别理论，确定了等效弹性模量作为关键参数。此外，还提出了生成其他两个等效参数（等效密度和等效泊松比）的方法。此外，通过数值和实际情况，分别用所提出的方法创建了等效模型，并对等效模型的模态数据进行了比较和分析。与传统的有限元模型（FEM）相比，等效模型的结构更简单，元素数量更少，但是，对于模态数据，比较结果表明等效模型与实际的硬涂层具有良好的对应关系。叶状。 （C）2019 Elsevier Masson SAS。版权所有。

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