UNIFORM FEM-B-SPLIN NA ABORDAGEM DE PROBLEMAS DE VIBRAÇÕES LIVRES E FORÇADAS EM CASCAS LAMINADAS

Daniel Alves de Andrade¹; Alexandre Fassini Michels¹; Oscar Alfredo Garcia de Suarez¹

¹ Universidade de Caxias do Sul (UCS)

doi:10.20906/CPS/CILAMCE2017-1095

Resumo

One of the challenger in the approach the moderate thick plates and shells problems is to approximate the elastic solid comportment in the approach the static and dynamic behaviour in structural component of the laminated composite materials. In this paper are analysed the performance of the linear first shear deformation theory (FSDT); cubic third shear deformation theory (TSDT) by Reddy (1984) to approach the free and forced vibration problems in the composite laminate axisymmetric revolution plates and shells. In order to improve the responses in natural frequencies, the high regularity spaces will be constructed according to the Uniform FEM-B-Spline proposed by Burla (2008). The numerical results aim to verify the performance of the aforementioned theories and the approximated space proposed in the approach of the following problems: convergence to a target frequency; transient response to the displacement and velocity in a shallow shell composed of laminates subject to the impulsive force. The results obtained in the proposed studies will be compared as reference solutions obtained with the elastic model of solid of revolution and the reference solution obtained from the rule of thumb proposed by Dan Givoli (2008).

Palavras-chave: revolution shells; composite laminated; TSDT; FEM-Spline