A zero-curvature criterion is proposed to determine the practical collapseload.
本文提出一种确定实际极限载荷的零曲率准则。
2
Casing damage is the bottleneck problem for oil and gas production. Reasonable design of collapseload 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。
3
With the help of plastic hinge theory and collapse theory, the formulas for calculating strength failure load and the method for computing collapseload were established respectively.