Deformation of helical buckling appeared on rod during down stroke is also analyzed.
同时分析了下冲程抽油杆所产生的螺旋弯曲变形。
Here, force and deformation of a conical helical spring are discussed based on equilibrium configuration after deformation, and a nonlinear analytic formula is derived.
文中以圆锥螺旋弹簧变形后的平衡位形分析计算其受力和变形，导出了非线性公式。
The results showed that helical dislocations exist in LY12 alloy under the condition of T3 and T6, but disappear after deformation.
结果表明，LY12合金在T3和T6状态存在蜷线位错，形变后蜷线位错消失。
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