An experimental campaign consisting in uniaxial tensile tests is conducted on several bovine aorta specimens with the aim of developing and calibrating a hyperelastic model for the tissue. Bovine aorta partially reflects the behavior of human aorta, which will be tested soon. This kind of biological materials present hyperelasticity, strain-rate dependency, relaxation, Mullins-like unloading effect and, eventually, anisotropy due to collagen fibers that are evenly dispersed in the structure. Mechanical tests show quite a high dispersion. The modeling approach, based on the Holzapfel’s skin constitutive equation and expressed in terms of invariants, demonstrates to be adequate in describing the nonlinear-hyperelastic behavior.

Mechanical characterization and constitutive modeling of tensile behavior of bovine aorta / Collini, L. - (2018). (Intervento presentato al convegno IC - UBT 2018 UBT INTERNATIONAL CONFERENCE 2018 tenutosi a PRISTINE, KOSOVO nel 26-28 OCTOBER 2018).

Mechanical characterization and constitutive modeling of tensile behavior of bovine aorta

Collini L
2018-01-01

Abstract

An experimental campaign consisting in uniaxial tensile tests is conducted on several bovine aorta specimens with the aim of developing and calibrating a hyperelastic model for the tissue. Bovine aorta partially reflects the behavior of human aorta, which will be tested soon. This kind of biological materials present hyperelasticity, strain-rate dependency, relaxation, Mullins-like unloading effect and, eventually, anisotropy due to collagen fibers that are evenly dispersed in the structure. Mechanical tests show quite a high dispersion. The modeling approach, based on the Holzapfel’s skin constitutive equation and expressed in terms of invariants, demonstrates to be adequate in describing the nonlinear-hyperelastic behavior.
2018
Mechanical characterization and constitutive modeling of tensile behavior of bovine aorta / Collini, L. - (2018). (Intervento presentato al convegno IC - UBT 2018 UBT INTERNATIONAL CONFERENCE 2018 tenutosi a PRISTINE, KOSOVO nel 26-28 OCTOBER 2018).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2854729
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