Scudelari, Ada CristinaLacerda, Estéfane George Macedo de2014-12-172014-12-102014-12-172014-02-28LACERDA, Estéfane George Macedo de. Nonlinear analysis of trusses using the positional finite element method. 2014. 107 f. Dissertação (Mestrado em MECÂNICA DAS ESTRUTURAS, ESTRUTURAS DE CONCRETO E ALVENARIA E MATERIAIS E PROCESSOS CONSTRUTIVOS) - Universidade Federal do Rio Grande do Norte, Natal, 2014.https://repositorio.ufrn.br/jspui/handle/123456789/14861This work presents the positional nonlinear geometric formulation for trusses using different strain measures. The positional formulation presents an alternative approach for nonlinear problems. This formulation considers nodal positions as variables of the nonlinear system instead of displacements (widely found in literature). The work also describes the arc-length method used for tracing equilibrium paths with snap-through and snap-back. Numerical applications for trusses already established in the literature and comparisons with other studies are provided to prove the accuracy of the proposed formulationapplication/pdfAcesso AbertoTreliça. Não linearidade geométrica. Elementos finitos. Formulação posicional. Medidas de deformação. Comprimento de arcoTruss. Geometric nonlinearity. Finite elements. Positional formulation. Strain measures. Arc-length methodmasterThesisCNPQ::ENGENHARIAS::ENGENHARIA CIVIL