| 平板叶片的相关激励响应试验 |
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| 引用本文： | 杜建建,李舜酩,张袁元,方立成.平板叶片的相关激励响应试验[J].实验室研究与探索,2011,30(1). |
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| 作者姓名： | 杜建建 李舜酩 张袁元 方立成 |
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| 作者单位： | 南京航空航天大学,能源与动力学院,江苏,南京,210016 |
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| 基金项目： | 国家自然科学基金资助项目(50675099) |
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| 摘 要： | 为了研究不同频率的激振力叠加作用下平板叶片的位移响应变化,在平板叶片上选取激励点和多个响应点进行相关性激励试验。试验中,首先运用设计的加法器对频率为112、280和583 Hz的简谐力分别进行叠加,然后以压电陶瓷片作为激振器对平板叶片进行激励,同时以压电陶瓷片作为感应器采集位移响应,最后应用谱分析方法对位移响应进行分析。通过对比不同频率的激振力叠加作用下的位移响应自功率谱幅值,发现自功率谱幅值比单一频率激振力作用时有所降低,并且降低的程度和与其叠加的激振力频率的大小和个数有关,叠加的个数越多,降低的程度越大。
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| 关 键 词： | 平板叶片 振动响应 压电陶瓷片 加法器 自功率谱 |
Research on Stimulus-Response Test of Flat Blade |
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| DU Jian-jian,LI Shun-ming,ZHANG Yuan-yuan,FANG Li-cheng.Research on Stimulus-Response Test of Flat Blade[J].Laboratory Research and Exploration,2011,30(1). |
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| Authors: | DU Jian-jian LI Shun-ming ZHANG Yuan-yuan FANG Li-cheng |
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| Institution: | DU Jian-jian,LI Shun-ming,ZHANG Yuan-yuan,FANG Li-cheng(College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China) |
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| Abstract: | To study the changes of flat blade response under the interaction of different frequency force,an incentive point and some response points were selected for excitation test.In the test,an adder was designed to achieve superposition of harmonic force,whose frequency is 112,280 and 583 Hz respectively.Then,piezoelectric ceramic was used as actuator for excitation and sensor for displacement response.Spectral analysis was applied to the displacement response.By comparing the amplitude of auto-spectral density ... |
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| Keywords: | flat blade vibration response piezoelectric ceramic adder auto-spectral density |
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