A new method to design energy-conserving surrogate models for the coupled, nonlinear responses of intervertebral discs
Maria Hammer,
Tizian Wenzel,
Gabriele Santin
et al.
Abstract:The aim of this study was to design physics-preserving and precise surrogate models of the nonlinear elastic behaviour of an intervertebral disc (IVD). Based on artificial force-displacement data sets from detailed finite element (FE) disc models, we used greedy kernel and polynomial approximations of second, third and fourth order to train surrogate models for the scalar force-torque -potential. Doing so, the resulting models of the elastic IVD responses ensured the conservation of mechanical energy through t… Show more
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