| 摘要 |
PROBLEM TO BE SOLVED: To provide a residual stress estimation method and a residual stress estimation device that are capable of curbing the collection number of cut pieces for measuring inherent strain without lowering estimation accuracy of residual stress.SOLUTION: When it is assumed that inherent strain is distributed uniformly in a single direction in a structure, a user measures residual stress from a cut piece collected within an area where the inherent strain is distributed uniformly, and then inputs a measurement into a residual stress estimation device. The residual stress estimation device uses the given residual stress measurement to estimate a two-dimensional distribution of inherent strain on an analysis face perpendicular to the single direction in the structure, copies the estimated two-dimensional distribution of inherent strain in the single direction and then estimates a three-dimensional distribution of inherent strain in the structure.SELECTED DRAWING: Figure 5 |
