Non-linear effective properties for web-core steel sandwich panels in tension

摘要: Abstract All-metal sandwich panels with a low weight-to-stiffness ratio provide the means to develop cost and energy efficient large-scale thin-walled structures such as ships. However, modeling computational effort for three-dimensional (3-D) may be significant especially in limit state analysis of ship structures. This can become drawback conceptual design stage. To this end, we determine load–displacement curves until tensile instability orthotropic web-core under multi-axial tension loading. Load–displacement are determined by dividing panel into discrete members analyzing each constituents separately. Combined response is obtained rule mixtures. Tensile assessed using analytical necking criteria. Validity analytically established comparing them those 3-D Finite Element Modeling (FEM) unit cell. Analyses cells show that while stiffness strongly direction dependent, independent governed faceplates. The then implemented ABAQUS UGENS subroutine describe non-linear mechanical shell section behavior framework Equivalent Single Layer (ESL) theory. was used simulate idealized accommodation deck, without cut-out, passenger ship. Good agreement found between FEM ESL.