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本文根据弹性力学柯西解及三维弹性有限元分析,对通孔及盲孔测量时,边界与孔中心距离和孔与孔间距问题进行了研究讨论,得到边界及孔间距是在一定范围内有影响的,孔与孔之间的影响与载荷方向有关,并且通过实验对其进行了验证。由此确定了误差小于2%~3%的横向最小间距d_(ymin)(垂直于载荷)、纵向最小距D_(xmin)(平行于载荷方向)和孔与边界的最小距离d_(min)。为盲孔测量获得比较可靠而又完整的应力数值提供了依据。
In this paper, based on the elastic mechanics Cauchy solution and three-dimensional elastic finite element analysis, the measurement of the through-hole and the blind hole, the boundary and hole center distance and the hole and hole spacing problems are discussed and discussed, the boundary and hole spacing is within a certain range Influence, the influence between hole and hole is related to the direction of load, and verified by experiment. Thus, the minimum horizontal distance d_ (ymin) (perpendicular to the load), the minimum vertical distance D_ (xmin) (parallel to the load direction) and the minimum distance d_ (min) between the hole and the boundary are determined. It provides the basis for obtaining reliable and complete stress values for blind hole measurement.