LIMIT BENDING MOMENT CALCULATION DEVICE AND LIMIT BENDING MOMENT CALCULATION METHOD

摘要

PROBLEM TO BE SOLVED: To easily calculate a value with high security when calculating a limit bending moment of a cylindrical structure.;SOLUTION: A limit bending moment calculation device comprises: an input device 140 to which input data 121 including cylinder information 141 and defect information 143 is inputted; a surface defect modeling unit 112 and a penetration defect modeling unit 113 for modeling, based on the input data 121, a defect as a defect model in a cross section; and a limit bending moment calculation unit 115 for calculating, when a load moment is applied so that a side where the defect is generated becomes a tension side, a limit bending moment, which is a bending moment applied to a cylindrical structure when the cylindrical structure is broken, on the basis of the input data 121, average tensile stress and average compressive stress. An absolute value of the average compressive stress is less than an absolute value of the average tensile stress.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT