METHOD OF DETERMINING STRAIN HARDENING CHARACTERISTICS OF LINE PIPE

摘要

A method of determining strain hardening characteristics of a pipe able to reduce costs with safety ensured. A pipe production method using this pipe strain hardening characteristics determining method, and a pipe and a pipeline produced by this pipe production method. The method of determining strain hardening characteristics of a pipe comprises the pipe condition setting step of setting the diameter D, pipe thickness t, and required compression local buckling strain ϵreq of a pipe, the strain hardening characteristics acquiring step of determining the strain hardening characteristics in the vicinity of a buckling point of the pipe that satisfy the conditions set in the pipe condition setting step, and the step of using the above strain hardening characteristics as conditions to be satisfied by the stress/strain curve of the pipe.