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我们用光弹性法对拱弯试样的K_1作了测定,采用TSCM法和S—S法进行数据处理。文中推出了用三次曲线拟合实验数据的回归系数公式。光弹实验结果与柔度标定结果符合情况良好。
We used the photoelastic method to measure the K_1 of the arched specimen, and used TSCM method and S-S method to process the data. In this paper, the regression coefficient formula for fitting experimental data with cubic curve is introduced. The results of photoelastic experiment are in good agreement with the results of flexibility calibration.