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    毕红霞, 王艾伦, 曹旭辉. 基于应变模态的自带冠叶盘结构振动局部化问题[J]. 华东理工大学学报(自然科学版), 2012, (4): 524-528.
    引用本文: 毕红霞, 王艾伦, 曹旭辉. 基于应变模态的自带冠叶盘结构振动局部化问题[J]. 华东理工大学学报(自然科学版), 2012, (4): 524-528.
    BI Hong-xia, WANG Ai-lun, CAO Xu-hui. Vibration Localization of Bladed Disk with Shrouds Based on Strain Model[J]. Journal of East China University of Science and Technology, 2012, (4): 524-528.
    Citation: BI Hong-xia, WANG Ai-lun, CAO Xu-hui. Vibration Localization of Bladed Disk with Shrouds Based on Strain Model[J]. Journal of East China University of Science and Technology, 2012, (4): 524-528.

    基于应变模态的自带冠叶盘结构振动局部化问题

    Vibration Localization of Bladed Disk with Shrouds Based on Strain Model

    • 摘要: 目前循环周期结构振动局部化问题的研究多采用位移模态,应变模态鲜见用于相关研究。因此,基于自带冠叶盘结构有限元模型,提出将应变模态用于振动局部化问题研究的设想,对比分析了应变模态和位移模态在衡量失谐叶盘结构振动局部化时的效果。研究发现,与位移模态相比,基于应变模态的振动局部化尤其是振动响应局部化对刚度失谐更敏感;同一阶次的应变模态振型和位移模态振型不完全相同。研究结果对含减振结构循环周期系统的设计有重要理论意义。

       

      Abstract: The studies on vibration localization of periodic structure are mainly based on displacement modes at present, while the strain modes have not been applied to the research of vibration localization. Consequently, it was imagined to apply the strain modes to vibration localization based on a finite element model of bladed disk with shrouds, and the vibration localization factors based on strain modes and displacement modes were compared with the condition that the bladed disk is mistuning. The results show that the vibration localization based on strain modes is much more sensitive to stiffness mistuning than the vibration localization based on displacement modes; what’s more, the strain mode shapes are different with the displacement modes at the same mode order. The results are important to the design of periodic structure with snubbing mechanism.

       

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