Eventos Anais de eventos
ENEBI 2018
6º Encontro Nacional de Engenharia Biomecânica
EXPERIMENTAL AND NUMERICAL ANALYSIS OF THE TENSILE TEST ON CORTICAL BONE DEMINERALIZATION
Submission Author:
Cristiane Silva , RJ
Co-Authors:
Cristiane Silva, Jorge Arturo Hinostroza Medina, Claudio Santos, Maurício Monteiro, Guido Graça
Presenter: Cristiane Silva
doi://10.26678/ABCM.ENEBI2018.EEB18-0216
Abstract
Osteoporosis is an osteometabolic disease characterized by bone demineralization and is associated with an increased risk of fracture. Bone demineralization was chemically induced using ethylenediaminetetraacetic acid, with immersion times of 1 h, 2 h and 4 h to evaluate the variation of the ultimate tensile strength. Cortical bone tissues were evaluated from 13 fresh bovine femurs from different races and ages. These tests were performed in a universal machine with100 kN capacity and were conducted on a deformation rate of 2,5 mm/min. Due to the bones irregular geometry and specimens asymmetry, a numerical simulation was performed considering the actual specimens geometry after machining. There was no great variation in relation demineralization time and average ultimate strength values, however, in individual specimens compared to their respective controls a decrease percentage around 16% was observed. The numerical simulation faithfully reproduced the results of the stress field in the evaluated specimens.
Keywords
Osteoporosis, Tensile testing, FEA, Cortical Bone
