The results showed that the buckling configuration was helical curve for the gravitational tubular under the axial compressive force and torque.
结果表明，受压扭组合作用的有重管柱的屈曲构型为上疏下密的螺旋曲线。
The effect of initial deflection on the first frequency increased with either the length of drill stem or the axial compressive force on the drill stem increases.
钻柱横向非线性振动的基频随着初弯曲最大挠度的增大而减小，初弯曲对钻柱横向非线性振动基频的影响随钻柱长度的增大而增大，随轴向压力的影响而增加。
The paper trys to analyse stability of column by the method of dynamic analysis, deduces the formula of relation between axial compressive force and frequency of transverse vibration.
尝试用动力分析的方法对压杆稳定问题进行理论分析与实验研究。
The paper trys to analyse stability of column by the method of dynamic analysis, deduces the formula of relation between axial compressive force and frequency of transverse vibration.
尝试用动力分析的方法对压杆稳定问题进行理论分析与实验研究。
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