Prof Eann Patterson from the University of Liverpool talks about validation of computational solid mechanics models using strain fields measured with camera-based systems. How much evidence do we need to accept a model as being an appropriate representation of reality? And how can we extract a meaningful quality measure from a comparison of millions of measurement and simulation data points?
Prof. George Lampeas from the University of Patras presents a generic validation procedure and applies it to a diversity of problems from solid mechanics: thermo-mechanical verification of a space antenna reflector; indentation of soft non-linear material; bending of a structural beam. These test cases were part of the Validation Interlaboratory Study.
Dr Erwin Hack from Empa, Switzerland, introduces a procedure and reference materials appropriate for calibration of camera-based instruments to measure strain and deformation. Calibration is a pre-requisite for the traceability of measurement results, and for using them in a validation process for numerical simulations. More information on calibration is found here.Dr Erwin Hack from Empa addresses validation of the design of engineering structures by comparing FE results to camera-based measurement data. After decomposition of the full-field data sets data compatibility is quantified by the distance of the parameters. This generic methodology allows for quantifying model quality.