Large deformation analysis of sandwich beams using compound $$C^1$$ continuous finite element approximation
Year: 2025
Type: article
Abstract: A novel computational framework for the geometrically nonlinear elastic response of sandwich rods, plates and shells is proposed and investigated in the context of statics of a straight sandwich beam. Particular attention is paid to the local effects associated with thickness deformation. Modeling the face sheets as geometrically exact 1D rods with bending and tension/compression, and the soft core as a 2D continuum at plane stress, is efficient with the $$C^1$$ C 1 continuous approximation of displacements using the corresponding bonding conditions. The benchmark problems include bending of the sandwich beam under distributed loading and under the action of a concentrated force, buckling under compression, and local wrinkling analysis at force bending. The mesh convergence of the numerical model is established, and the solutions are validated for a wide range of core stiffness against other reference results obtained with commercial finite element software as well as against analytical results available in the literature.
Source: Acta Mechanica
Authors: Yury Vetyukov, Ali Razgordanisharahi
Institution: TU Wien
Language: English
Subfield: Mechanics of Materials
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,490
OpenAlex ID: W4407860227