Finite-element analysis of the fundamental frequency of a sandwich plate with pyramidal lattice truss core: Comparison of the discrete and continuous core models

Alexander V. Lopatin, Sergey A. Pikulin, Elijah A. Lopatin, Laboratory of Computational Mechanics and Risk Analysis, Federal Research Center for Information and Computational Technologies, Department of Computer Modelling, Siberian State University of Science and Technology, Department of Complex Analysis, Steklov Mathematical Institute of Russian Academy of Sciences

Journal of Sandwich Structures & Materials

Published online on June 26, 2026

Abstract

Journal of Sandwich Structures & Materials, Ahead of Print.
This paper presents a comparative analysis of discrete and continuous models for the pyramidal lattice truss core in sandwich plates. The study focuses on determining the fundamental vibration frequency as the basis for model comparison. The finite ...