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Passive muscle behaviour – experimental and numerical investigations
Author(s) -
Weichert Christine,
Leichsenring Kay,
Siebert Tobias,
Böl Markus
Publication year - 2011
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201110059
Subject(s) - hyperelastic material , isotropy , focus (optics) , work (physics) , orientation (vector space) , deformation (meteorology) , mechanism (biology) , transversal (combinatorics) , computer science , materials science , mechanics , finite element method , geometry , structural engineering , mechanical engineering , physics , optics , mathematics , mathematical analysis , engineering , composite material , quantum mechanics
The material behaviour of skeletal muscles can be decomposed into two parts: an active part, describing the contractile mechanisms, and a passive one, characterising the passive components such as the connective tissue. Computational models are used to support the understanding of complex mechanism inside a muscle. In the present work, we focus on the three‐dimensional passive tissue behaviour from the experimental as well as modelling point of view. Therefore, quasi‐static experiments have been performed on specimens with regular geometry. By using a three‐dimensional optical measurement system the shape of the specimens has been reconstructed at different deformation states. On the modelling side a hyperelastic model with transversal isotropic fibre orientation has been used to describe non‐linear stress responses. The model has been validated by performing analyses for different fibre orientations. In summary, it figures out that the proposed modelling approach is able to reflect the experimental results in a satisfying manner. (© 2011 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)