Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
SILICONE REINFORCED BY NYLON FIBERS UNDER SIMPLE SHEAR FOR EMULATING BIOLOGICAL TISSUES
Submission Author:
Carolina Seixas Moreira , RJ
Co-Authors:
RENATO PENHA FARIA, Luiz Nunes, Carolina Seixas Moreira
Presenter: Carolina Seixas Moreira
doi://10.26678/ABCM.COBEM2017.COB17-0718
Abstract
The development of studies on mechanical behavior of biological tissues are motivated by prosthesis and artificial tissues improvements. It also has a great importance for understanding damage in tissues which may cause diseases. Nevertheless, biological materials bring difficulties such as ethical regulations, scarce availability and demand bureaucracy and specific care for their testing and maintenance. It would thus be of interest to mimic mechanical behavior of biological tissues by using synthetic materials. Several models based on composites with fibers embedded in an isotropic matrix have been proposed to mimic fibrous soft tissues. However, previous researches in the field of hyperelastic anisotropic materials have concentrated on theoretical models, which indicates that there is little experimental information about these materials. The aim of this work is to study the mechanical behavior of a transversely isotropic hyperelastic material under simple shear. Silicone specimens, reinforced with parallel nylon fibers, were tested under simple shear. Digital Image Correlation (DIC) was used to determine the amount of shear. This paper also presents some strain-energy density models and analyzes how well the models fit the experimental data. The experimental results indicate that the stiffness of the composite is influenced by the diameter of the fibers, the spacing between them and the effective distance between applied loads.
Keywords
artificial tissues, hyperelastic anisotropic, strain-energy density models, simple shear
