Comparison of Two-Dimensional Fields Generated by Numerical Simulation and Digital Image Correlation

A method is proposed for superimposing the two-dimensional data fields derived by the finite-element method and by digital image correlation. This entails interpolation of the initial data on an irregular grid by selecting the points on a regular grid closest to the initial points using a k -dimensional tree algorithm (the KD-Tree algorithm in Python). A method is outlined for eliminating the influence of outliers and edge effects on the visualization of the estimates, using a weighting function.