Modeling steel and composite structures / Pedro Colmar Goncalves da Silva Vellasco, Rio de Janeiro State University, Rio de Janeiro, Brazil, Luciano Rodrigues Ornelas De Lima, Rio de Janeiro State University, Rio de Janeiro, Brazil, Sabastião Arthur Lopes De Andrade, Rio de Janeiro State University, Rio de Janeiro, Brazil, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro, Brazil, Marley Maria Bernardes Rebuzzi Vellasco, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro, Brazil, Luís Alberto Proença Simõ Da Silva, University of Coimbra, Coimbra, Portugal.