Multi-Body Modelling and Simulation of Animal Locomotion

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Abstract
Multi-body models of musculoskeletal systems can be used to determine internal forces from measured external forces and movements (‘inverse dynamics’) and to perform simulations of movements using muscle forces or activations as input (‘direct dynamics’). Examples of ‘direct’ simulations of movements in the horse are presented. With a model of the equine hindlimb, the function of the ‘passive stay apparatus’ could be explained. A model of the forelimb was used to determine force distributions in the digital flexor tendons, and to experiment with various methods to change the force distribution. Simulations of this type are valuable tools in basic research on functional anatomy and aetiology of injuries. An application with much future potential is the optimization of sports performances using simulation methods.

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