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Modeling and experimental investigation on the mechanical behavior of a spiral-type capsule in the small intestine

Conference Paper


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Abstract


  • This paper reports on the study of the behavior of the viscoelastic contact between a spiral-type capsule and the small intestine. Both 2D and 3D simulations show that the traction force, which is due to the pressure difference between the two sides of the spirals, is velocity dependent. With an increase in the sliding velocity, the traction force decreases initially due to the reduced stress relaxation. However, if the velocity reaches some certain magnitude, the reduction in the stress becomes negligibly small. The traction force starts to increase because of the higher stress coming from the higher strain rates. The experimental torque and force measurements were taken for the capsules with different cross-section profiles. The results show that the traction force can be raised by carving grooves on the spirals' surface or using a higher and narrower spiral structure. The difference between the mechanical behaviors of a rotating-only capsule and a rotating-and-translating capsule were experimentally studied and explained in detail. The results show that a rotating-and-advancing capsule gets slightly more resistive torque than a rotating-only capsule.

Publication Date


  • 2013

Citation


  • Zhou, H., Alici, G., Than, T. Duc. & Li, W. (2013). Modeling and experimental investigation on the mechanical behavior of a spiral-type capsule in the small intestine. 2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM) (pp. 1260-1265). United States: IEEE.

Scopus Eid


  • 2-s2.0-84883695146

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2635&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1626

Has Global Citation Frequency


Start Page


  • 1260

End Page


  • 1265

Place Of Publication


  • United States

Abstract


  • This paper reports on the study of the behavior of the viscoelastic contact between a spiral-type capsule and the small intestine. Both 2D and 3D simulations show that the traction force, which is due to the pressure difference between the two sides of the spirals, is velocity dependent. With an increase in the sliding velocity, the traction force decreases initially due to the reduced stress relaxation. However, if the velocity reaches some certain magnitude, the reduction in the stress becomes negligibly small. The traction force starts to increase because of the higher stress coming from the higher strain rates. The experimental torque and force measurements were taken for the capsules with different cross-section profiles. The results show that the traction force can be raised by carving grooves on the spirals' surface or using a higher and narrower spiral structure. The difference between the mechanical behaviors of a rotating-only capsule and a rotating-and-translating capsule were experimentally studied and explained in detail. The results show that a rotating-and-advancing capsule gets slightly more resistive torque than a rotating-only capsule.

Publication Date


  • 2013

Citation


  • Zhou, H., Alici, G., Than, T. Duc. & Li, W. (2013). Modeling and experimental investigation on the mechanical behavior of a spiral-type capsule in the small intestine. 2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM) (pp. 1260-1265). United States: IEEE.

Scopus Eid


  • 2-s2.0-84883695146

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2635&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1626

Has Global Citation Frequency


Start Page


  • 1260

End Page


  • 1265

Place Of Publication


  • United States