Local buckling performance evaluating method for steel pipe, steel pipe designing methiod, steel pipe manufacturing method, and steel pipe

Abstract From the Canadian patent

A method for evaluating local buckling performance of a steel pipe that can evaluate whether a yield-plateau model steel pipe can be applied to a usage that requires high local buckling performance such as pipelines is provided. A specific solving means includes a first step of obtaining a stress-strain relationship of a material having a yield plateau in the stress-strain relationship; a second step of determining the comparison of a starting strain of strainhardening in the stress-strain relationship obtained in the first step and a critical strain of the steel pipe; and a third step of evaluating that the steel pipe has a possibility of being applied to a structure that …