شماره ركورد كنفرانس :
4561
عنوان مقاله :
Experimental study and nonlinear behavior analysis of human ureter under longitudinal and circumferential tensile
Author/Authors :
A Rassoli Biological Fluid Mechanics Research Laboratory - Biomedical Engineering Faculty - Amirkabir University of Technology, Tehran , N Fatouraee Biological Fluid Mechanics Research Laboratory - Biomedical Engineering Faculty - Amirkabir University of Technology, Tehran , M Shafigh Department of Engineering - Islamshahr Branch Islamic Azad University, Tehran , A.S Seddighi Shohadae Tajrish Hospital - Functional Neurosurgery Research Center - Shahid Beheshti University of Medical Sciences, Tehran
كليدواژه :
Uniaxial test , hyperelastic model , Fung-type model , strain–energy function , modified Mooney–Rivlin model
عنوان كنفرانس :
The Bi-Annual International Conference on Experimental Solid Mechanics and Dynamics ۲۰۱۴
چكيده لاتين :
There is no consistent data on the mechanical properties of human ureter which crucial in finite element analyses (FEA). Therefore, we performed series of uniaxial strain measurement experiments and extracted the constitutive model to describe the mechanical characteristics of the ureter tissue. So six specimens were obtained from human ureter and the planar uniaxial tests were performed on the tissue specimens by applying loads along the directions. Then the achieved stress-strain curves from the tests were modeled with a mathematical function and the Young modulus was obtained in both longitudinal and circumferential directions. The specimens showed stiffer behavior in longitudinal direction rather than circumferential one. Then measured data were fitted into the hyperelastic fourparameter Fung-type model and also to the modified Mooney–Rivlin hyperelastic model ready to use in computational modeling software.
