动态法测杨氏模量共振频率的拟合研究  

A Fitting Study of Measuring Young's Modulus Resonance Frequency with a Dynamic Approach

作　　者：何熙起[1] 

机构地区：[1]内江师范学院物理与电子信息工程学院,四川内江641112

出　　处：《内江师范学院学报》2010年第10期37-39,共3页Journal of Neijiang Normal University

摘　　要：分析讨论了动力学法测杨氏模量基频固有频率的最小二乘法拟合,指出在笔者采用数据的试验条件下,拟合多项式的幂次以3~4次为宜.The least squares fit in measuring the natural frequency of Young＇s modulus is studied by method of dynamics.It is pointed out that it is most suitable when the power of a fitting polynomial equals 3-4.

关 键 词：杨氏模量 动力学法 固有频率 节点 多项式拟合 

分 类 号：O326[理学—一般力学与力学基础]