Non-Newtonian pulsating blood flow-induced dynamic instability of visco-carotid artery within soft surrounding visco-tissue using differential cubature method

Tabatabaee-Arani, A. and Ghorbanpour-Arani, A. and Kolahchi, R. (2015) Non-Newtonian pulsating blood flow-induced dynamic instability of visco-carotid artery within soft surrounding visco-tissue using differential cubature method. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 229 (16). pp. 3002-3012.

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Abstract

The high blood rate that often occurs in carotid arteries may play a role in artery failure and tortuosity which leads to blackouts, transitory ischemic attacks, and other diseases. However, dynamic analysis of carotid arteries conveying blood is lacking. The objective of this study was to present a biomechanical model for dynamic instability analysis of the embedded carotid arteries conveying pulsating blood flow. In order to present a realistic model, the carotid arteries and tissues are assumed viscoelastic using Kelvin-Voigt model. Carotid arteries are modeled as elastic cylindrical vessels based on Mindlin cylindrical shell theory (MCST). One of the main advantages of this study is considering the pulsating non-Newtonian nature of the blood flow using Carreau, Casson, and power law models. Applying energy method, Hamilton's principle and differential cubature method (DCM), the dynamic instability region (DIR) of the visco-carotid arteries is obtained. The detailed parametric study is conducted, focusing on the combined effects of the elastic medium and non-Newtonian models on the dynamic instability of the visco-carotid arteries. It can be seen that with increasing the tissue stiffness, the natural frequency of visco-carotid arteries decreases. The current model provides a powerful tool for further experimental investigation about arterial tortuosity. © IMechE 2014.

Item Type: Article
Additional Information: cited By 0
Uncontrolled Keywords: Blood; Blood vessels; Hemodynamics; Outages; Stability; Tissue, Carotid artery; DCM; MSDT; Non-newtonian; Tissue matrices, Non Newtonian flow
Subjects: Engineering
Divisions: Faculty of Medicine > Clinical Sciences > Department of Internal Medicine
Depositing User: editor . 2
Date Deposited: 08 Mar 2017 14:15
Last Modified: 08 Mar 2017 14:15
URI: http://eprints.kaums.ac.ir/id/eprint/296

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