A set of linear elastic homogeneous isotropic axisymmetric thin shells of revolution with plane projection of radius R varying with the height c of the pole, to keep constant mass, is introduced. Their curvature and dynamical properties depend on the ratio c/R, and their linear dynamics is investigated by standard modal analysis, adopting a commercial code, and accounting for curvature. Natural frequencies for a given mode are linear with c/R, decrease for membrane modes, and increase for transverse modes. Thus, membrane and transverse modes may shift as curvature grows; graphical and numerical results are reported.

Curvature effects on the eigenproperties of axisymmetric thin shells / Guidi, Matteo; Fregolent, Annalisa; Ruta, Giuseppe. - In: THIN-WALLED STRUCTURES. - ISSN 0263-8231. - STAMPA. - 119:(2017), pp. 224-234. [10.1016/j.tws.2017.06.007]

Curvature effects on the eigenproperties of axisymmetric thin shells

FREGOLENT, Annalisa;RUTA, Giuseppe
2017

Abstract

A set of linear elastic homogeneous isotropic axisymmetric thin shells of revolution with plane projection of radius R varying with the height c of the pole, to keep constant mass, is introduced. Their curvature and dynamical properties depend on the ratio c/R, and their linear dynamics is investigated by standard modal analysis, adopting a commercial code, and accounting for curvature. Natural frequencies for a given mode are linear with c/R, decrease for membrane modes, and increase for transverse modes. Thus, membrane and transverse modes may shift as curvature grows; graphical and numerical results are reported.
2017
eigenfrequencies; curvature; axisymmetric shells
01 Pubblicazione su rivista::01a Articolo in rivista
Curvature effects on the eigenproperties of axisymmetric thin shells / Guidi, Matteo; Fregolent, Annalisa; Ruta, Giuseppe. - In: THIN-WALLED STRUCTURES. - ISSN 0263-8231. - STAMPA. - 119:(2017), pp. 224-234. [10.1016/j.tws.2017.06.007]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/977866
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