三层结构模型的内共振和组合共振

吴志强;陈世栋;雷 娜;宫明旭

振动与冲击 ›› 2014, Vol. 33 ›› Issue (8) : 1-3.

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (8) : 1-3.
论文

三层结构模型的内共振和组合共振

  • 吴志强1,陈世栋1,2,雷 娜1,2,宫明旭1
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Internal and combinational resonances of a three-story structure

  • WU Zhi-qiang, CHEN Shi-dong, LEI Na, GONG Ming-xu
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摘要

主要对三层结构模型的内共振和组合共振实验进行了研究。通过模态设计使得结构一、二阶模态频率之比接近1:3。经振动台水平基础激励实验发现:以一阶模态频率、二阶模态频率激励,都可激发出一、二阶模态间的内共振行为,同时该结构中还存在多种组合共振行为。为下一步非线性振动实验装置的改进奠定了基础。

Abstract

Experiments on internal and combinational resonances of a three-story structure are investigated. The frequency ratio between the first and the second modal of the structure is set near 1:3 by modal design. The internal resonance behaviors are found when the excitation frequency is near that of the first or second modal frequency. Meanwhile, several types of combinational resonances are found in this structure. These results made a foundation for future modification of the nonlinear vibration equipment.


关键词

三层结构 / 内共振 / 组合共振

Key words

three-layer structure / internal resonance / combination resonance

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导出引用
吴志强;陈世栋;雷 娜;宫明旭. 三层结构模型的内共振和组合共振[J]. 振动与冲击, 2014, 33(8): 1-3
WU Zhi-qiang;CHEN Shi-dong;LEI Na;GONG Ming-xu. Internal and combinational resonances of a three-story structure[J]. Journal of Vibration and Shock, 2014, 33(8): 1-3

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