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| 动态法测金属杨氏模量的理论研究 | |
| 引用本文： | 吴明阳,朱祥. 动态法测金属杨氏模量的理论研究[J]. 大学物理, 2009, 28(3) |
| 作者姓名： | 吴明阳 朱祥 |
| 作者单位： | 郑州轻工业学院,技术物理系,河南,郑州,450002 |
| 摘 要： | 本文系统地研究了动力学法测量杨氏模量的实验原理,结果表明实验测得的频率是金属棒与换能器组成的系统的固有频率,并得到该频率的基本公式.结果还证实由外推法处理后的频率的确是金属棒的固有频率. |
| 关 键 词： | 杨氏模量 受迫振动 固有频率 外推法 耦合 |
Theoretical research on experiment of measuring Young's modulus with dynamical method |
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| WU Ming-yang,ZHU Xiang. Theoretical research on experiment of measuring Young's modulus with dynamical method[J]. College Physics, 2009, 28(3) | |
| Authors: | WU Ming-yang ZHU Xiang |
| Affiliation: | Department of Technical Physics;Zhengzhou University of Light Industry;Zhengzhou 450002;China |
| Abstract: | The experimental principle of measuring Young's modulus by the dynamical method is studied systematically.The results show that the frequency which can be obtained from the experiment is the natural frequency of the system,which is composed of the metal bar and the changer,and the fundamental formula is deduced.The results also demonstrate that the frequency which is obtained in the experiment by using the extrapolation method is the natural frequency of the metal bar indeed. |
| Keywords: | Young's modulus forced vibration natural frequency extrapolation coupling |
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