Lima, Wanderson Geraldo deNeves, Francisco de Assis dasSousa Junior, João Batista Marques de2017-11-072017-11-072017LIMA, W. G. de; NEVES, F. de A. das; SOUSA JÚNIOR. Parametric modal dynamic analysis of steel-concrete composite beams with deformable shear connection. Latin American Journal of Solids and Structures, v. 14, p. 335-356, 2017. Disponível em: <http://www.scielo.br/scielo.php?pid=S1679-78252017000200335&script=sci_arttext>. Acesso em: 29 set. 2017.1679-7825http://www.repositorio.ufop.br/handle/123456789/9103Composite structural elements of steel-concrete began to be used only in 1960 after the development of methods and constructive dispositions that ensured the functionality of these two materials together. In order to verify the importance of the participation of the axial mode in the frequency spectrum of the free vibration problem in composite beams with deformable shear connection, several analyses for 4 different boundary conditions and stiffness connection variation were performed. The analysis of the problem was carried out by development and computational implementation of a finite element for composite beams with partial interaction in the longitudinal direction applied to the problem of free vibrations. The solutions to this problem in the literature are scarce, and project recommendations are simplified. The results show that the finite element exhibits an excellent performance compared with the analytical results and as the axial mode has a high modal contribution, despite the boundary condition and stiffness connection.en-USabertoDynamic analysisComposite beamsFinite elements methodDeformable shear connectionArtigo publicado em periodicoOs trabalhos publicados no periódico Latin American Journal of Solids and Structures estão sob Licença Creative Commons que permite copiar, distribuir e transmitir o trabalho desde que sejam citados o autor e o licenciante. Fonte: Latin American Journal of Solids and Structures <http://www.lajss.org/index.php/LAJSS/about/submissions#copyrightNotice>. Acesso em: 23 jan. 2020.https://doi.org/10.1590/1679-78252981