2016-12-132022-04-262022-04-262016-03-11GONÇALVES, D. F. Introdução aos métodos de redução de modelos adaptados a sistemas mecânicos com características não lineares. 2016. 82 f. Dissertação (Mestrado em Modelagem e Otimização) - Universidade Federal de Goiás, Catalão, 2016.http://repositorio.ufcat.edu.br/tede/handle/tede/6581Studies focused on modeling and mechanical system behavior prediction are relevant to the avoidance of excessive deflections and structural failures. Most of these systems are discretized by finite element models which are constituted by a large number of degrees of freedom, making it quite expensive computationally. In this context, the application of models reduction methods becomes particularly prominent because it provides a greater saving in time, keeping the solution quality. This work aims to study methods of reducing models applied to nonlinear dynamical systems. Among the methods aimed at reducing models, there is the Guyan method, Improved Reduction System (IRS), Iterative Improved Reduction System (IIRS) System Equivalent Reduction Expansion Process (SEREP), Component Mode Synthesis (CMS) and method of modal projection. In order to verify the efficiency of the models reduction methods when applied to nonlinear systems is presented in this paper a study where the system responses are analyzed by checking the computational cost and quality of the reduced solution of the problem for each of the mentioned methods.application/pdfAcesso AbertoSistemas mecânicosElementos finitosNão linearidadesMétodos de redução de modelosMechanical systemsFinite elementsNonlinearitiesModels reduction methodsMATEMATICA::MATEMATICA APLICADADissertação