A zero-curvature criterion is proposed to determine the practical collapse load.
本文提出一种确定实际极限载荷的零曲率准则。
Casing damage is the bottleneck problem for oil and gas production. Reasonable design of collapse load is vital to the life of casing.
套管损坏是制约油气生产的瓶颈问题,而套管外挤载荷设计合理与否对套管寿命具有决定性的作用。
With the help of plastic hinge theory and collapse theory, the formulas for calculating strength failure load and the method for computing collapse load were established respectively.
分别利用塑性铰理论和压溃理讨论了强度计算问题,提出了强度承载能力计算公式和压溃荷载计算方法。
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