TAILIEUCHUNG - Biaxial quantification of passive porcine myocardium elastic properties by region

Considering accurate constitutive models is of the utmost importance when capturing the mechanical response of soft tissue and biomedical materials under physiological loading conditions. This paper investigated the behaviour of porcine myocardium in passive rested hearts. This was done by applying biaxial loads on the myocardium. | Biaxial quantification of passive porcine myocardium elastic properties by region Engineering Solid Mechanics 2017 155-166 Contents lists available at GrowingScience Engineering Solid Mechanics homepage esm Biaxial quantification of passive porcine myocardium elastic properties by region Fulufhelo Nemavholaa a Department of Mechanical and Industrial Engineering School of Engineering College of Science Engineering and Technology University of South Africa Florida 1710 South Africa A R T I C L EI N F O ABSTRACT Article history Considering accurate constitutive models is of the utmost importance when capturing the Received 6 March 2017 mechanical response of soft tissue and biomedical materials under physiological loading Accepted 12 June 2017 conditions. This paper investigated the behaviour of porcine myocardium in passive rested Available online hearts. This was done by applying biaxial loads on the myocardium. The main objective of this 21 June 2017 Keywords research was to investigate the cardiac mechanics of various regions of a healthy passive rested Biaxial testing porcine heart. The biaxial mechanical properties of myocardial tissue samples were captured Elastic modulus using a biaxial testing system. The porcine heart was divided into three regions namely left Cardiac mechanics ventricle LV septum and right ventricle RV . In these regions 18 18 mm2 equal samples Porcine heart were cut from six porcine passive hearts. For the LV sample the biaxial elastic modulus in the Soft tissue mechanics fibre direction was larger than in the cross fibre direction for the mid-wall sample it was larger and for the RV sample it was larger. It was concluded that the cardiac mechanics of LV septum and RV exhibit mechanical behaviour that differs considerably. In developing adequate computational models these data could be applied to estimate the material parameters of the myocardium. 2017 Growing Science Ltd. All rights reserved. 1. .

• Cơ khí - Chế tạo máy
• Soft tissue mechanics
• Myocardium elastic properties
• Passive rested hearts
• Biaxial elastic modulus
• Biaxial testing system