The tricuspid valve is a one-way valve on the pulmonary side of the heart, which prevents backflow of blood during ventricular contractions. Development of computational models of the tricuspid valve is important both in understanding the normal valvular function and in the development/improvement of surgical procedures and medical devices. A key step in the development of such models is quantification of the mechanical properties of the tricuspid valve leaflets. In this study, after examining previously measured five-loading-protocol biaxial stress–strain response of porcine tricuspid valves, a phenomenological constitutive framework was chosen to represent this response. The material constants were quantified for all three leaflets, which were shown to be highly anisotropic with average anisotropy indices of less than (an anisotropy index value of 1 indicates a perfectly isotropic response, whereas a smaller value of the anisotropy index indicates an anisotropic response). To obtain mean values of material constants, stress–strain responses of the leaflet samples were averaged and then fitted to the constitutive model (average over ). Since the sample thicknesses were not hugely different, averaging the data using the same tension levels and stress levels produced similar average material constants for each leaflet.
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September 2018
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Quantification of Material Constants for a Phenomenological Constitutive Model of Porcine Tricuspid Valve Leaflets for Simulation Applications
Keyvan Amini Khoiy,
Keyvan Amini Khoiy
Department of Biomedical Engineering,
The University of Akron Olson Research Center,
Room 322/3 260 South Forge Street,
Akron, OH 44325
e-mail: ka67@zips.uakron.edu
The University of Akron Olson Research Center,
Room 322/3 260 South Forge Street,
Akron, OH 44325
e-mail: ka67@zips.uakron.edu
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Anup D. Pant,
Anup D. Pant
Department of Biomedical Engineering,
The University of Akron Olson Research Center,
Room 322/3 260 South Forge Street,
Akron, OH 44325
e-mail: adp63@zips.uakron.edu
The University of Akron Olson Research Center,
Room 322/3 260 South Forge Street,
Akron, OH 44325
e-mail: adp63@zips.uakron.edu
Search for other works by this author on:
Rouzbeh Amini
Rouzbeh Amini
Mem. ASME
Department of Biomedical Engineering,
The University of Akron Olson Research Center,
Akron, OH 44325
e-mail: ramini@uakron.edu
Department of Biomedical Engineering,
The University of Akron Olson Research Center,
Room 301F 260 South Forge Street
,Akron, OH 44325
e-mail: ramini@uakron.edu
Search for other works by this author on:
Keyvan Amini Khoiy
Department of Biomedical Engineering,
The University of Akron Olson Research Center,
Room 322/3 260 South Forge Street,
Akron, OH 44325
e-mail: ka67@zips.uakron.edu
The University of Akron Olson Research Center,
Room 322/3 260 South Forge Street,
Akron, OH 44325
e-mail: ka67@zips.uakron.edu
Anup D. Pant
Department of Biomedical Engineering,
The University of Akron Olson Research Center,
Room 322/3 260 South Forge Street,
Akron, OH 44325
e-mail: adp63@zips.uakron.edu
The University of Akron Olson Research Center,
Room 322/3 260 South Forge Street,
Akron, OH 44325
e-mail: adp63@zips.uakron.edu
Rouzbeh Amini
Mem. ASME
Department of Biomedical Engineering,
The University of Akron Olson Research Center,
Akron, OH 44325
e-mail: ramini@uakron.edu
Department of Biomedical Engineering,
The University of Akron Olson Research Center,
Room 301F 260 South Forge Street
,Akron, OH 44325
e-mail: ramini@uakron.edu
1Corresponding author.
Manuscript received September 26, 2017; final manuscript received April 26, 2018; published online May 24, 2018. Assoc. Editor: Keefe B. Manning.
J Biomech Eng. Sep 2018, 140(9): 094503 (11 pages)
Published Online: May 24, 2018
Article history
Received:
September 26, 2017
Revised:
April 26, 2018
Citation
Khoiy, K. A., Pant, A. D., and Amini, R. (May 24, 2018). "Quantification of Material Constants for a Phenomenological Constitutive Model of Porcine Tricuspid Valve Leaflets for Simulation Applications." ASME. J Biomech Eng. September 2018; 140(9): 094503. https://doi.org/10.1115/1.4040126
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