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本文叙述了编制二次方程等若干个程序使用PC—1500微机求解三维光弹斜射法试验的应力分量。其主要特点是: (1)在适当条件下以二次方程方式代替切力差,消除一般计算中可能产生的过大积累误差; (2)以不同投射方向(如任意空间两坐标轴)所得数据验证和检查结果的正确性等。 各程序经过检查和应用均合格,从而为提高光弹实验精度和速度迈进了一步。
This article describes the preparation of quadratic equations and other procedures using PC-1500 microcomputer to solve the stress component of the three-dimensional optical projectile method. Its main features are: (1) Under the appropriate conditions, the quadratic equation is used instead of the difference of the shear force to eliminate the excessive accumulation error that may occur in general calculations; (2) It is obtained with different projection directions (such as arbitrary space two coordinate axes). Data verification and inspection results are correct. All procedures are qualified for inspection and application, thus making a step forward in improving the accuracy and speed of photo-elastic experiments.