本文利用钻头不同位置不同方向的惯性矩和挠曲对其弯曲刚性进行解析。
This paper by means of different locations inertia moment of different directions and bending of the drill, analyses its bending rigidity.
水平井套管柱的挠曲变形，不仅受自重引起的横向均布载荷的影响，而且还受轴向力的影响，同时还可能有初弯曲。
The flexual deformation of casing in a horizontal hole is caused not only by the uniform transverse load from dead weight, but also by the axial load, and the existence of initial bent if any.
对由自重产生挠曲的各种织物弯曲刚度测定方法给出统一的理论分析。
A unified theory is presented to analyze some conventional methods for estimating the bending rigidity of fabrics, which described the elastic deformation of fabrics under gravity.
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