Method for calculating heating scheme used in bending process of metal plate using linear heating

The present invention is a method for calculating a heating scheme used in a bending process of a metal plate using linear heating. The calculation method includes: performing structural analysis under a first heating condition including a heating line set in an analysis model, and repeating a first trial of comparing the analysis result with a first target shape by changing the position of the heating line; a step of selecting, as a first selected heating line, the heating line set in the first trial whose analysis result is close to the first target shape in the repeated first trial, and performing structural analysis under a second heating condition including the first selected heating line and the heating line set in the analysis model; a step of changing the position of the heating line and repeating a second trial in which the analysis result is compared with a second target shape; and a step of selecting, as a second selected heating line, the heating line set in the second trial in which the analysis