title: Robust human body model injury prediction in simulated side impact crashes.
abstract: This study developed a parametric methodology to robustly predict occupant injuries sustained in real-world crashes using a finite element (FE) human body model (HBM). One hundred and twenty near-side impact motor vehicle crashes were simulated over a range of parameters using a Toyota RAV4 (bullet vehicle), Ford Taurus (struck vehicle) FE models and a validated human body model (HBM) Total HUman Model for Safety (THUMS). Three bullet vehicle crash parameters (speed, location and angle) and two occupant parameters (seat position and age) were varied using a Latin hypercube design of Experiments. Four injury metrics (head injury criterion, half deflection, thoracic trauma index and pelvic force) were used to calculate injury risk. Rib fracture prediction and lung strain metrics were also analysed. As hypothesized, bullet speed had the greatest effect on each injury measure. Injury risk was reduced when bullet location was further from the B-pillar or when the bullet angle was more oblique. Age had strong correlation to rib fractures frequency and lung strain severity. The injuries from a real-world crash were predicted using two different methods by (1) subsampling the injury predictors from the 12 best crush profile matching simulations and (2) using regression models. Both injury prediction methods successfully predicted the case occupant's low risk for pelvic injury, high risk for thoracic injury, rib fractures and high lung strains with tight confidence intervals. This parametric methodology was successfully used to explore crash parameter interactions and to robustly predict real-world injuries.
authors.affiliation: a Virginia Tech - Wake Forest University School of Biomedical Engineering and Sciences , Winston-Salem , NC , USA.|b Wake Forest University School of Medicine , Winston-Salem , NC , USA.
authors.forename: Adam J
authors.initials: AJ
authors.lastname: Golman
authors.affiliation: a Virginia Tech - Wake Forest University School of Biomedical Engineering and Sciences , Winston-Salem , NC , USA.|b Wake Forest University School of Medicine , Winston-Salem , NC , USA.
authors.forename: Kerry A
authors.initials: KA
authors.lastname: Danelson
authors.affiliation: a Virginia Tech - Wake Forest University School of Biomedical Engineering and Sciences , Winston-Salem , NC , USA.|b Wake Forest University School of Medicine , Winston-Salem , NC , USA.
authors.forename: Joel D
authors.initials: JD
authors.lastname: Stitzel
mesh_terms: D000063:Accidents, Traffic; D000368:Aged; D006259:Craniocerebral Trauma; D005260:Female; D006801:Humans; D016014:Linear Models; D008875:Middle Aged; D008954:Models, Biological; D018986:Motor Vehicles; D012253:Rib Fractures; D013898:Thoracic Injuries
keywords: blunt impact trauma; finite element analysis; human body modelling; injury prediction; injury risk, parametric study; motor vehicle crash