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槽间垫片功用分析及减振机理试验

张大义 杨诚 林丹 夏颖 朱彬 洪杰

张大义, 杨诚, 林丹, 夏颖, 朱彬, 洪杰. 槽间垫片功用分析及减振机理试验[J]. 航空动力学报, 2019, 34(6): 1185-1192. doi: 10.13224/j.cnki.jasp.2019.06.001
引用本文: 张大义, 杨诚, 林丹, 夏颖, 朱彬, 洪杰. 槽间垫片功用分析及减振机理试验[J]. 航空动力学报, 2019, 34(6): 1185-1192. doi: 10.13224/j.cnki.jasp.2019.06.001
Functions and experiment on damping mechanism of spacer[J]. Journal of Aerospace Power, 2019, 34(6): 1185-1192. doi: 10.13224/j.cnki.jasp.2019.06.001
Citation: Functions and experiment on damping mechanism of spacer[J]. Journal of Aerospace Power, 2019, 34(6): 1185-1192. doi: 10.13224/j.cnki.jasp.2019.06.001

槽间垫片功用分析及减振机理试验

doi: 10.13224/j.cnki.jasp.2019.06.001
基金项目: 国家自然科学基金(11772022,51475021)

Functions and experiment on damping mechanism of spacer

  • 摘要: 针对国内高涵道比涡扇发动机风扇叶片的设计亟需,分析得到槽间垫片功用及设计要求,并通过机理试验揭示了槽间垫片减振机理。研究结果表明:在常规简谐激励作用于风扇叶片时,槽间垫片并不能提供有效阻尼,无法起到减振作用。在高能冲击载荷作用于风扇叶片时,槽间垫片可以起到较好的阻尼作用,快速地衰减自由振动,降低疲劳损伤积累。金属橡胶或橡胶槽间垫片能使叶片的冲击响应时间减少50%以上。槽间垫片应设计足够大的预紧力以实现叶片稳定的径向定位,降低风扇叶片在风车状态时的晃动幅值,减小榫头榫槽接触磨损;应具备足够大的柔度,确保高能冲击载荷下允许叶片偏摆一定的角度,通过垫片变形吸收冲击能量,从而降低叶片根部应力峰值。

     

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出版历程
  • 收稿日期:  2018-09-21
  • 刊出日期:  2019-06-28

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