Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
J-Integral study in hyperelastic material submitted to a mode I fracture loading
Submission Author:
Lucas Macedo Barboza , RJ
Co-Authors:
Lucas Macedo Barboza, João Carlos Andrade de Deus Filho, Luiz Nunes
Presenter: Lucas Macedo Barboza
doi://10.26678/ABCM.COBEM2023.COB2023-0200
Abstract
It is known that soft biological tissues can be considered hyperelastic materials. Therefore, a deeper knowledge on the behavior of hyperelastic materials subjected to different conditions and loads, enables a greater understanding of this type of tissue. Thus, it becomes possible the development of protocols for injury prevention, the creation of prostheses, and advancing treatments against chronic joint pain. The goal of this work is to analyze the J-integral in a cracked pure shear specimen of incompressible and isotropic hyperelastic material subjected to mode-I loading. The material used was a silicone rubber, and the tests were carried out in a universal tensile machine, which performed a quasi-static movement, at constant temperature. To measure the displacement and deformation fields, the Digital Image Correlation method was employed. By varying the paths and regions around the crack tip, the study revealed that the line and area J-Integral do not have similar values, due to the difference in the domain they are calculated. Additionally, this work highlights that the stresses in the loading direction significantly impact the area J-Integral results, so that other stresses can be neglected in the calculations without compromising the final outcome.
Keywords
J integral, hyperelastic material, Digital Image Correlation, fracture
