A numerical modeling based on Higher-order Shear Deformation Theories (HSDTs) is here proposed to compute the fundamental frequency of composite anisogrid panels and shells, as typically encountered in large-span buildings or aerospace structures, due to their outstanding properties of transparency and lightness. An anisotropic homogenized continuum model is accomplished together with a Generalized Differential Quadrature (GDQ) method to solve the vibration problem for structural members with a lattice microarchitecture, with a reduced computational effort. The proposed numerical strategy results to be reliable and efficient as verified through a comparative investigation between our 2D differential quadrature solutions and those ones obtained using a commercial Finite Element (FE) software, for different geometric and stiffness parameters.

Higher-order modeling of anisogrid lattice shell structures with complex geometries

Francesco Tornabene
;
Rossana Dimitri
2022

Abstract

A numerical modeling based on Higher-order Shear Deformation Theories (HSDTs) is here proposed to compute the fundamental frequency of composite anisogrid panels and shells, as typically encountered in large-span buildings or aerospace structures, due to their outstanding properties of transparency and lightness. An anisotropic homogenized continuum model is accomplished together with a Generalized Differential Quadrature (GDQ) method to solve the vibration problem for structural members with a lattice microarchitecture, with a reduced computational effort. The proposed numerical strategy results to be reliable and efficient as verified through a comparative investigation between our 2D differential quadrature solutions and those ones obtained using a commercial Finite Element (FE) software, for different geometric and stiffness parameters.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11587/469605
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