FINITE-ELEMENT ANALYSIS OF MULTILAYERED SHELLS OF REVOLUTION

A finite element formulation for the static and dynamic analysis of mu ltilayered shells of revolution is developed. The basis of this formul ation is a superparametric curved element having four degrees of freed om per node including normal rotation. Element stiffness, mass and loa d matrices are derived for axisymmetric analysis of laminated shells. Static analysis of a multilayered pressure vessel, which has 27 layers in its thickness and a hemispherical cover at one end, is carried out using the formulation and the program developed. Results obtained for the static analysis of the pressure vessel are compared with results obtained by the standard code practices. Natural frequencies of shells of revolution corresponding to axixymmetric modes of vibration are pr esented.