| 明瑞森.机械阻抗测量的一种新方法[J].,1997,16(1):13-17,12 |
| 机械阻抗测量的一种新方法 |
| A new method for measuring mechanical impedance |
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| 中文摘要: |
| 本文介绍了一种新的机械阻抗测量方法──声强法．由定义出发将机械阻抗表为功率流和加速度响应谱的函数，应用结构声强技术测量功率流．声强法不需要测量作用力信号，可以用于测量任意结构中各类机械阻抗．实验结果表明：声强法获得的测量值与直接测量方法获得的测量值相近，声强法能较准确地测量一维和二维匀质结构中机械阻抗． |
| 英文摘要: |
| A new method for measuring mechanical impedance is described in this paper.Based on its definition, mechanical impedance is expressed as a function of power flow and acceleration auto-spectrum. The power flow can be measured using structural intensity techniques. All types of mechanical impedance in any structure can be measured using this new method in which force signals don’ t need to be measured. A series of measurements was carried out and the results were agreed well with those measured by the direct method. |
| DOI：10.11684/j.issn.1000-310X.1997.01.003 |
| 中文关键词: 机械阻抗 结构声强技术 功率流 |
| 英文关键词: Mechanical impedance Structural intensity technique Power flow. |
| 基金项目:国家自然科学基金 |
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