The effects of the connectors on the critical buckling load and the bending stress of pipes in horizontal section are analyzed.
分析了钻杆接头对水平井段钻柱屈曲临界力和弯曲应力的影响，提出了计算钻柱正弦屈曲临界力的新方法。
The critical load and critical stress were deduced by means of energy principle and catastrophe theory based on these conditions, and the buckling model of pillar was presented.
在此基础上，应用能量原理及突变理论推导矿柱失稳的临界载荷及临界应力，提出矿柱发生失稳的屈曲模型。
Critical stress and inertial exponent are treated as two characteristic parameters for the asymmetric dynamic buckling of cylindrical shells under axial step loading.
对于轴向阶梯载荷下圆柱壳的非轴对称动力屈曲，将临界应力和屈曲惯性指数作为双特征参数求解。
The critical stress and strain for web buckling were figured out by analytic method.
利用解析的方法，给出了腹板产生屈曲的临界应力和应变。
An axially compressive thin-walled steel element on elastic foundation is adopted to deduce the critical stress and critical diameter to thickness ratio for circular steel tube in local buckling.
在此基础上，把薄壁钢管纵向单元作为支承在弹性地基上的压杆，推导出钢管出现局部屈曲的临界应力和临界径厚比。
The character of unequal-thickness was considered as geometrical defect, which decreases the critical stress of classical shell buckling to some extent.
提出多层不等厚可看成是圆柱壳壳壁上的几何缺陷，在一定程度上会减弱经典圆柱壳的屈曲临界应力水平。
In the paper, the formulas of the critical buckling time and stress distribution in unsupported wall region of curve part are presented.
进一步推导了曲面零件悬空区上的应力分布及临界失稳公式。
The critical stress and axial buckling-wave-number predicted by the (theoretical) analysis is in good agreement with existent experimental results.
关于屈曲应力和屈曲波数的理论计算结果与已有实验吻合良好。
It is found that the critical local buckling stress and diameter to thickness ratio of circular steel tube are considerably increased by the support of filled concrete.
由于内部混凝土的存在，大大提高了薄壁钢管的临界屈曲应力和径厚比。
It is found that the critical local buckling stress and diameter to thickness ratio of circular steel tube are considerably increased by the support of filled concrete.
由于内部混凝土的存在，大大提高了薄壁钢管的临界屈曲应力和径厚比。
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