An open-source tool for the validation of finite element models using three-dimensional full-field measurements

  • Three-dimensional (3D) full-field measurements provide a comprehensive and accurate validation of finite element (FE) models. For the validation, the result of the model and measurements are compared based on two respective point-sets and this requires the point-sets to be registered in one coordinate system. Point-set registration is a non-convex optimization problem that has widely been solved by the ordinary iterative closest point algorithm. However, this approach necessitates a good initialization without which it easily returns a local optimum, i.e. an erroneous registration. The globally optimal iterative closest point (Go-ICP) algorithm has overcome this drawback and forms the basis for the presented open-source tool that can be used for the validation of FE models using 3D full-field measurements. The capability of the tool is demonstrated using an application example from the field of biomechanics. Methodological problems that arise in real-world data and the respective implemented solution approaches are discussed.

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Metadaten
Author:Alexander Abel, Stephanie Lucina KahmannORCiD, Stephen Mellon, Manfred StaatORCiD, Alexander JungORCiD
DOI:https://doi.org/10.1016/j.medengphy.2019.10.015
ISSN:1350-4533
Parent Title (English):Medical Engineering & Physics
Publisher:Elsevier
Place of publication:Amsterdam
Document Type:Article
Language:English
Year of Completion:2020
Volume:77
First Page:125
Last Page:129
Link:https://doi.org/10.1016/j.medengphy.2019.10.015
Zugriffsart:weltweit
Institutes:FH Aachen / Fachbereich Medizintechnik und Technomathematik
FH Aachen / IfB - Institut für Bioengineering
collections:Verlag / Elsevier