This paper presents a three-dimensional phenomenological model for the
description of smooth muscle activation. A strain energy function is
proposed as sum of the strain energy stored in the passive tissue,
consisting of elastin and collagen, and an active calcium-driven energy
related to the chemical contraction of the smooth muscle cells. Further,
the proposed model includes the dispersions of the orientations of
smooth muscle cells and collagen. These dispersions, measured in
experiments, can be directly inserted into the model. The approach is
implemented into the framework of the finite element method.
Consequently, beside a validation with experiments the modelling concept
is used for a three-dimensional numerical study. (c) 2011 Elsevier Ltd.
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