Model order reduction techniques to identify submarining risk in a simplified human body model

L. Go, J. S. Jehle, M. Rees, C. Czech, S. Peldschus and F. Duddeck

Computer Methods in Biomechanics and Biomedical Engineering, 2024, vol. 27, issue 1, 24-35

Abstract: This work investigates linear and non-linear parametric reduced order models (ROM) capable of replacing computationally expensive high-fidelity simulations of human body models (HBM) through a non-intrusive approach. Conventional crash simulation methods pose a computational barrier that restricts profound analyses such as uncertainty quantification, sensitivity analysis, or optimization studies. The non-intrusive framework couples dimensionality reduction techniques with machine learning-based surrogate models that yield a fast responding data-driven black-box model. A comparative study is made between linear and non-linear dimensionality reduction techniques. Both techniques report speed-ups of a few orders of magnitude with an accurate generalization of the design space. These accelerations make ROMs a valuable tool for engineers.

Date: 2024
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DOI: 10.1080/10255842.2023.2165879

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