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.
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
关键词
杨氏模量
动力学法
固有频率
节点
多项式拟合
Young＇s modulus
method of dynamics
natural frequency
nodal point
polynomial fit
