FEM ANALYSES OF LOW VELOCITY IMPACT BEHAVIOUR OF SANDWICH PANELS WITH EPS FOAM CORE

Year 2017, Volume: 3 Issue: 6 - Special Issue 6: Istanbul International Conference on Progress Applied Science (ICPAS2017), 1544 - 1552, 04.10.2017

Umut Çalışkan

https://doi.org/10.18186/journal-of-thermal-engineering.353703

Cited By: 2

Abstract

This study presents a numerical
investigation on low velocity impact response of sandwich panels with EPS foam
core. The face-sheets and foam core are made of aluminum 6061-T6 and expanded
polystyrene foam (EPS). The effect of foam core density was investigated on the
impact energy absorption of the panel. The dynamic response of the panels was
predicted using the finite element analysis package ABAQUS/Explicit. The
material and geometrical nonlinearities were considered and the foam material
was modeled as a crushable foam material. The cohesive response of the adhesive
interface was modeled using the cohesive zone model. The temporal variations of
contact force, kinetic energy histories and central permanent deflections were
compared for different foam core densities and impact energies. The peak
contact force levels and central permanent deflections are increased with
increasing the impact energies. As the foam core density is increased, the
capability of energy absorbing is increased.

Keywords

Impact, Sandwich Panel, Foam, Non-Linear Finite Element Analysis, Cohesive Zone Model

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