Numerical modelling of sandwich panels with a non-continuous soft core

Abstract

Abstract. The paper presents the problem of static analysis of sandwich structures with a non-continuous soft core. In the numerical 3D FE models, the core is divided into separated parts. The contact between these parts has the form of unilateral constraints. The model also allows for local debonding of the facing and local imperfections of sandwich panel geometry. Particular attention is paid to the problem of local instability of the facing that is compressed during bending. The phenomenon of progressive damage and the influence of non-continuity of the core on the structural behavior of the sandwich panel is also discussed.

Numerical modeling of the casting solidification process in a mold taking into account the influence of an air gap with variable width

“…Numerical modeling with the use of FEM and computer simulations of various physical processes play a crucial role in a wide variety of industrial branches. Theoretical investigations into temperature, displacements, or stress distribution in manufactured elements and tools are an essential part of numerical modeling of various processes and physical phenomena, such as the drawing of wires [1], structural behavior of sandwich panels [2,3] or metal casting. The casting solidification process is a complex phenomenon that involves heat transfer, fluid flow and phase change of liquid metal.…”

Numerical solution of the heat advection equation in a two-dimensional domain using the discontinuous Galerkin method

“…This is an advantage in problems with high gradients or solution jumps. For this reason, the DGM approach is potentially interesting for solving problems in various fields of mechanics where large inhomogeneities or material discontinuities occur [7,8]. DGM involves approximating the solution using basis functions in each element and applying inter-element boundary conditions based on the Riemann or Lax-Friedrichs method.…”

Estudio experimental y simulación del comportamiento inelástico de paneles compuestos usando redes neuronales artificiales

“…El avance tecnológico computacional ha permitido desarrollar algunos modelos numéricos para el análisis de estas estructuras sándwich (10). En el comportamiento de las estructuras sándwich se reflejan varios mecanismos de fallas, los cuales son analizados y explicados experimental y numéricamente en varios artículos de investigación (11).…”