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基于受压力、弯矩和转矩复合载荷下圆柱钻杆三参数的分离,提出了一种通过拟合修正得到复合载荷下外螺旋钻杆的压力、弯矩和转矩分离的新方法。与传统的单一分离弯矩和转矩或者压力和转矩相比,实现了对复杂结构外螺纹钻杆在复合载荷下压力、弯矩及转矩的分离。利用ANSYS软件对外螺旋钻杆进行有限元仿真分析,得到复合载荷下外螺旋钻杆的压力、弯矩和转矩的误差分别为0.41%、1.69%和0.0002%,从而验证了此种分离修正方法的可行性。该方法为分析复合载荷下外螺旋钻杆力学参数的分布提供了理论依据。
Based on the separation of three parameters of the cylindrical drill pipe under the combined loads of the pressure, the bending moment and the torque, a new method of separating the pressure, the bending moment and the torque of the externally rotating drill pipe under the composite load is proposed. Compared with the traditional single separation torque and torque or pressure and torque, the separation of pressure, bending moment and torque of complex structure external thread drill pipe under compound load is realized. The ANSYS software is used to simulate the external screw drill pipe, and the errors of the external screw drill pipe under the composite load are 0.41%, 1.69% and 0.0002%, respectively. The results show that the correction method Feasibility. The method provides a theoretical basis for analyzing the distribution of the mechanical parameters of the auger drill pipe under the composite load.