Stresses in thin spherical shells with imperfections. Part II: Influence of local imperfections.

GODOY LUIS A.; FLORES FERNANDO G.

JOURNAL THIN WALLED STRUCTURES

Elsevier

Lugar: Amsterdan; Año: 1987 vol. 5 p. 145 - 155

The changes in stress resultants in thin spherical shells, associated with a local imperfection introducing curvature errors in all directions, are investigated. An axisymmetric finite element model of the shell and imperfection is employed to carry out the linear elastic analysis. Parametric studies have been performed, to identify the main parameters controlling the response, for the case of internal pressure. The results are compared with those obtained in Part I for axisymmetric imperfections, and bounds for maximum elastic stress resultants are established to cover the possibility of both local and axisymmetric imperfections.