Steel heat treatment simulation method and steel heat treatment simulation program

摘要

PROBLEM TO BE SOLVED: To provide a simulation method capable of accurately obtaining a strain or a stress during a heat treatment even in the case of a large-sized steel.SOLUTION: A heat treatment simulation method of a steel performs a thermal conduction analysis for calculating a temperature temporal change in each nodal point in a finite element model by using a physical property value in each phase and each temperature of the steel as material data of the steel, and calculates at least a transformation plasticity strain and a creep strain as a strain amount in an integrate point of element using a physical value of the steel as material data of the steel with the temperature of each nodal point obtained by thermal conduction as a temperature load, and the strain and the stress can be accurately estimated during the heat treatment by performing a thermal elasto-plastic stress analysis for calculating a change of an internal stress of the steel based on a sum of these elements.SELECTED DRAWING: Figure 1