Numerical investigation of open-hole damaged Nomex™ honeycomb panel under three-point bending load

Author:

Djemaoune Younes,Krstić Branimir,Radulović Daniel,Rašić Stefan,Dodić Marjan

Abstract

In the present study, a numerical investigation of three-point bending test of the open-hole damaged sandwich structures with Nomex TM honeycomb core and aluminium alloy skins is carried out. In order to evaluate the degradation of the mechanical properties of these damaged structures, a finite element model is realized and tested using Abaqus/Explicit. To validate the accuracy of the numerical model, the obtained numerical results of the intact panels are calibrated with the experimental results. The load-displacement curves of the damaged structures showed a significant decrease of the peak force and the flexural elastic modulus compared to the intact ones. The study indicated that the degradation level of these mechanical parameters is in a direct relationship with the damage size. In addition, the energy absorption of the damaged panels is calculated and compared to the intact one.

Publisher

Centre for Evaluation in Education and Science (CEON/CEES)

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