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
2022-01-01
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
