Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
INFLUENCE OF BOUNDARY CONDITIONS IN RESPONSE TO THE AXIAL COMPRESSION OF A CEMENT COMPOSITE
Submission Author:
Matthews Bandeira , RS
Co-Authors:
Matthews Bandeira, Camila Cardoso, Nadine Machado Ficher, Luis Kosteski, Ederli Marangon
Presenter: Matthews Bandeira
doi://10.26678/ABCM.COBEM2019.COB2019-2439
Abstract
This study aims to evaluate the mechanical behavior of a cement composite subjected to axial compression with different boundary conditions. These boundary conditions change the interfacial friction characteristics between the specimens and the test machine plates. These configurations modifies the mechanical behavior to axial compression, including maximum strength, stress-strain ratio and fracture mode of the material. For this work, axial compression tests were performed on cubic specimens with 10 cm in length in a cement composite material. The tests were performed with three boundary conditions. In the first one, which represents the minimum friction, grease was used between the plates and the specimens. For the second boundary condition, the tests were performed in the traditional manner, ie, direct contact between the sample and the metal plates of the test machine. The third boundary condition, which represents the maximum friction, forms bonded steel sheets on the specimens. Among the main results it can be highlighted that when comparing the data obtained in the tests with maximum friction and the traditional form, did not present great differences. On the other hand, the data obtained with minimum friction show a considerable reduction in the composite stiffness.
Keywords
axial compression, boundary conditions, friction, fracture mode
