Data assimilation of structural deformation using finite element simulations and single-perspective projection data based on the example of X-ray imaging

Autor: Ines Butz, Stefan Moser, Siegfried Nau, Stefan Hiermaier
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: SN Applied Sciences, Vol 3, Iss 5, Pp 1-14 (2021)
Druh dokumentu: article
ISSN: 2523-3963
2523-3971
DOI: 10.1007/s42452-021-04522-7
Popis: Abstract Gaining insight in the complex deformation processes inside a vehicle during the process of crashing is to date only possible via numerical simulations. To validate these simulations experimentally, high speed, high-energy X-ray imaging is currently developed. So far, X-ray images have only been compared qualitatively to simulations as quantitative analysis proves challenging: Three dimensional (3D) information has to be reconstructed from two dimensional (2D) X-ray images showing overlapping parts which undergo complex deformation. We propose a novel analysis method which adapts ideas from data assimilation to reconstruct three dimensional motion and deformation from two dimensional measurements using high speed X-ray video data and finite element (FE) simulations. Furthermore, we analyze the accuracy of the approach based on an observing system simulation experiment.
Databáze: Directory of Open Access Journals
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