Exploring the dynamics of a vibro-impact capsule moving on the small intestine using finite element analysis
Tian, J; Liu, Y; Prasad, S
Date: 5 July 2021
Book chapter
Publisher
Springer
Publisher DOI
Abstract
This paper aims to study a realistic finite element (FE)
model to depict the nonlinear dynamics of a vibro-impact capsule moving
on the small intestine for active capsule endoscopy. The FE model takes
both the nonlinear vibro-impact mechanism and the viscoelastic deformation of the small intestine into account. FE results are compared ...
This paper aims to study a realistic finite element (FE)
model to depict the nonlinear dynamics of a vibro-impact capsule moving
on the small intestine for active capsule endoscopy. The FE model takes
both the nonlinear vibro-impact mechanism and the viscoelastic deformation of the small intestine into account. FE results are compared with
the simulation results obtained using non-smooth differential equations
and experimental results. It is found that the FE model can provide a
more realistic prediction of the system in the complex intestinal environment in terms of capsule’s tilted motion and asymmetric distribution of
capsule-intestine contact pressure. In particular, the capsule’s dynamics
is very sensitive to the surface condition of the intestine, so a comprehensive bifurcation analysis is needed for fully understanding its dynamics
under intestinal peristalsis.
Engineering
Faculty of Environment, Science and Economy
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