Experimental and numerical analysis of springback and bending behavior of a composite sandwich metal-polymer material

Miranda, Sara S.; Santos, Abel D.; Amaral, Rui; Malheiro, L. T.

doi:10.1063/1.5112525

Cited by 2 publications

(1 citation statement)

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“…In this regard, it is crucial to investigate the mechanical properties and suitability of multi-layer metal sheets in forming processes involving large plastic deformations. A number of studies on the forming and mechanical behaviour of multi-layer sheets can be found in the literature, which include extensive investigation on the behaviour of metal-polymer-metal sandwich sheets under stretching, bending and deep-drawing loading conditions [5][6][7][8][9][10]. However, these studies, being mainly experimental, need to be complemented by in-depth stress analysis, which can be performed numerically, to better understand the forming behaviour of multilayer sheets.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Forming Behaviour of Multilayer Sheets

Marques

Prates

Pereira

et al. 2020

Metals

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Nowadays, composite materials are playing an increasingly important role in material forming processes because they can combine remarkable physical and mechanical properties with relatively low weight. The main objective of this work is to study the forming behaviour of multi-layer sheets by finite element analysis. The possibility of replacing the composite by a single equivalent material, with a plastic behaviour similar to that of the composite, was also numerically analysed. This study focuses on two three-layer sheets, each composed of two metallic outer layers and a core of polymeric material; on one of the sheets, the outer layers are steel and, on the other, aluminium. Numerical simulations of the bulge test and of the deep drawing of a U-channel profile and a square cup were used to evaluate the behaviour of the multi-layer sheets and their equivalent materials. The influences of the difference of the mechanical properties of the constituent materials and some geometrical parameters of the deep-drawing process on the plastic behaviour, namely the curves of force vs. displacement of the punch and the strain and stress distributions, were evaluated. The possibility of using the bulge test to characterize the behaviour of the composite was also analysed.

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