Quantitative comparison of biodynamic responses, simulated using the Patil or Liu lumped parameter models, were carried out with respect to experimental anthropomorphic test dummy response data obtained from the Sikorsky advanced composite airframe program helicopter crash test. The biodynamic responses obtained from these models were characterized by large offsets from the experimental peak magnitudes, large perturbations in biodynamic displacements, and delayed response. The inability to accurately predict biodynamic response using either model led to development of a new four-degree-of-freedom nonlinear biodynamic model corresponding to a Hybrid II 50th-percentile male occupant, the parameters of which were identified by minimizing the least-square error between the simulated and advanced composite airframe program experimental responses. The new model accurately predicts peak magnitude, overall shape, and duration of the biodynamic transient response, with minimal phase shift. The biodynamic model was further validated using data from the crashworthy composite fuselage drop experiment conducted by Fasanella and Jackson (“Impact Testing and Simulation of a Crashworthy Composite Fuselage Section with Energy-Absorbing Seats and Dummies,”
Biodynamic Model of a Seated Occupant Exposed to Intense Impacts
AIAA Journal ; 53 , 2 ; 426-435
2014-09-30
10 pages
Article (Journal)
Electronic Resource
English
Biodynamic Model of a Seated Occupant Exposed to Intense Impacts
Online Contents | 2015
|Automotive engineering | 2007
|