Developpement d'elements continus de coques axisymetriques et de coudes
Keywords:
Continuous elements, dynamic stiffness, axisymmetric shell, curved pipeAbstract
In this paper, the continuous element method, based on the « quasi-exact » solution of the dynamic equations, is presented. An axisymmetric continuous shell element and a curved pipe continuous element are developed and their dynamic stiffness matrices are numerically constructed. The dynamic response of several pipelines to harmonic excitation are then computed by assembling the continuous elements; inertance and dynamic flexibility curves are compared with experimental and finite elements curves. The main advantages of the method are finally shown: swiftness of the modelling, direct and accurate response at high frequency domains, possibility to take into account structural damping/unction of the frequency.
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