INFLUÊNCIA DA CURVATURA E DAS CONDIÇÕES DE APOIO NOS ESFORÇOS DE UMA CASCA CONOIDAL

Resumo

The structural elements of the shell type are a good technical and aesthetic solution for
application in different types of construction works. In general, the shells can be used as cover, they
have a structural function and, in this situation, the knowledge of the influence of their contour
conditions and their curvature on the behavior of the structure assists in the execution of structural
projects. Thus, this paper studies the influence of curvature and boundary conditions on the behavior of
a conoidal shell of parabolic curvature when subjected to a uniformly distributed transverse load on its
surface. The solution of the problem is done by means of the finite element method (MEF), using the
commercial software Abaqus ® and one obtains the relation of the displacements, moment bending and
normal stress with the variation of the magnitude of the applied load. It is observed that the increase of
the height of the curvature and change of the conditions of support in the bark influence in the magnitude
and the distribution of the efforts of flexion and of membrane. In addition, a greater non-linearity of
responses is observed for certain combinations of curvature height and support conditions.