Validation of numerical simulations – a step forward
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?
Validation of numerical simulations
– test cases from solid mechanics
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.
Calibration of camera-based instruments
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.
An image decomposition approach to validation
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.