Methodology and Software Package for Assessment of Stress-strain State Parameters of Full-Scale Structures and Its Application to a Study of Loading Level, Defect Rate, and Residual Stress Level in Elements of NPP Equipment

The paper outlines the methodological approach and the related software package, which permit determining stress-strain state and defect rate for full-scale crack-containing objects. The method is based on computational assessment of the above-mentioned parameters on the condition of minimum of the objective function that describes discrepancy between the experimental data arrays and the results of numerical solutions to model problems using the finite-element method.