METHOD FOR EVALUATING PRE-STRAIN EFFECT ON METAL MATERIAL USING DUCTILE DAMAGE ANALYSIS METHOD

摘要

The present invention relates to a method for evaluating the effect of deformation of a metal material using a soft damage analysis method, wherein (a) the total deformation amount due to the total deformation at the time of softening of the metal material and the soft damage damage amount due to the softening failure are A strain and a proportional constant; (b) calculating physical property data of the metal material; (c) calculating the proportional constant using the physical property data; (d) calculating the soft damage damage amount using the proportionality constant calculated in the step (c); (e) the soft damage damage amount calculated in the step (d) is applied to the soft damage analysis method, and the influence evaluation by the full strain is performed. Accordingly, in evaluating the influence of the pre-strain of the metal material generated in the structure by welding, cold working, hot working, seismic load, etc., regardless of the holding state of the material property data on the metal material, The influence of deformation can be evaluated.