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A two dimensional approach for modelling of pennate muscle behaviour

Wojnicz W., Zagrodny B., Ludwicki M., Awrejcewicz J., Wittbrodt E.

Biocybernetics and Biomedical Engineering

2017

Vol. 37, no. 2

302--315

The purpose of this study was to elaborate a two-dimensional approach for unipennate and bipennate striated skeletal muscle modelling. Behavior of chosen flat pennate muscle is modelled as a rheological system composed of serially linked passive and active fragments having different mechanical properties. Each fragment is composed of three elements: mass element, elastic element and viscous element. Each active fragment furthermore contains the contractile element. Proposed approach takes into consideration that muscle force depends on a planar arrangement of muscle fibers. Paper presents results of numerical simulations, conclusions deduced on the base of these results and a concept of experimental verification of proposed models.