Multiscale Validation of Multiple Human Body Model Functional Spinal Units

Dustin Draper; Nicolas Newell; Spyros Masouros; Steffen Peldschus

doi:10.1115/1.4049332

Multiscale Validation of Multiple Human Body Model Functional Spinal Units

J Biomech Eng. 2021 Apr 1;143(4):041011. doi: 10.1115/1.4049332.

Authors

Dustin Draper¹, Nicolas Newell², Spyros Masouros³, Steffen Peldschus¹

Affiliations

¹ Biomechanics + Accident Analysis Institute of Legal Medicine, University of Munich, Munich 80336, Germany.
² Department of Mechanical Engineering, Imperial College London, London SW7 2AZ, UK.
³ Department of Bioengineering, Imperial College London, London SW7 2AZ, UK.

PMID: 33332544
DOI: 10.1115/1.4049332

Abstract

A validation comparing five human body model (HBM) lumbar spines is carried out across two load cases, with the objective to use and apply HBMs in high strain rate applications such as car occupant simulation. The first load case consists of an individual intervertebral disc (IVD) loaded in compression at a strain rate of 1/s by a material testing machine. The second load case is a lumbar functional spine unit (FSU) loaded in compression using a drop tower setup, producing strain rates of up to 48/s. The IVD simulations were found to have a better agreement with the experiments than the FSU simulations, and the ranking of which HBMs matched best to the experiment differed by load case. These observations suggest the need for more hierarchical validations of the lumbar spine for increasing the utility of HBMs in high strain rate loading scenarios.

MeSH terms

Intervertebral Disc*