dc.contributorCarlos Alberto Cimini Junior
dc.contributorErnani Sales Palma
dc.contributorLeonardo Barbosa Godefroid
dc.creatorMurilo Ferreira Brandao
dc.date.accessioned2019-08-12T23:57:45Z
dc.date.accessioned2022-10-03T22:55:49Z
dc.date.available2019-08-12T23:57:45Z
dc.date.available2022-10-03T22:55:49Z
dc.date.created2019-08-12T23:57:45Z
dc.date.issued2018-09-19
dc.identifierhttp://hdl.handle.net/1843/RAOA-BELQAV
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3813524
dc.description.abstractIn this paper numerical simulations were performed for tensile and fatigue analyzes of high cycle in bonded joints using composite materials as adhesives. For this, an algorithm was developed using the UEL subroutine in Abaqus® to add a damage model using cohesive elements when the structural component is requested by cyclic loads. This work is important because of the increasing use of bonded joints using composite materials in aeronautical, automotive and other industry segments. The reasons for this growth are some advantages over mechanical joints such as weight, fatigue strength, lower maintenance cost. In order to numerically represent the behavior of crack propagation and damage in the bonded region, the cohesive zone model (CZM) will be used. The reason for the choice is justified, since the CZM presents the main advantage, in relation to other models of classics of finite elements like VCCT and XFEM, the computational time. As a result, bonded joints for mode I were subjected to quasi-static and fatigue loading. The numerical and experimental values of the tensile stresses, the crack propagation rate and the number of joint life cycles were compared. In the quasi-static analysis, adjustment parameters for the CZM model were studied, such as cohesive stiffness and cohesive zone length, whose results showed the influence of their values on the traction-separation curve in the cohesive region for the DCB model and the influence on the distribution of normal and shear stress for the SLJ model. For the analysis of fatigue using CZM, the numerical model presented by Turon (2006) was applied with which it was possible to compare, by means of experimental data, the crack growth rate for different loading ratios, as well as the accumulation of the damage to the cohesive element caused by the cyclic loading.
dc.publisherUniversidade Federal de Minas Gerais
dc.publisherUFMG
dc.rightsAcesso Aberto
dc.subjectFadiga
dc.subjectJuntas coladas
dc.subjectCZM
dc.subjectMateriais compósitos
dc.subjectPropagação de trinca
dc.titleAnálise quase-estática e de fadiga em juntas coladas usando modelo de zona coesiva (CZM)
dc.typeDissertação de Mestrado


Este ítem pertenece a la siguiente institución