Experimental Analysis of the Crushing of Honeycomb Cores Under Compression

This paper presents an experimental study of the compressive response of hexagonal honeycomb core from the initial elastic regime to a fully crushed state. To understand the crushing mechanism, aluminum honeycomb core was compressed quasi-statically between rigid platens under displacement control....

Full description

Saved in:
Bibliographic Details
Published inJournal of materials engineering and performance Vol. 28; no. 3; pp. 1628 - 1638
Main Authors Mertani, Boubekeur Mohammed Bilel, Keskes, Boualem, Tarfaoui, Mostapha
Format Journal Article
LanguageEnglish
Published New York Springer US 15.03.2019
Springer Verlag/ASM International
Subjects
ALUMINIUM ALLOYS
BUCKLING
Characterization and Evaluation of Materials
Chemistry and Materials Science
COMPRESSION
Corrosion and Coatings
CRUSHING
ENERGY ABSORPTION
ENGINEERING
Engineering Design
Engineering Sciences
MATERIALS SCIENCE
Mechanics
Mechanics of materials
PEAK LOAD
Quality Control
Reliability
Safety and Risk
Tribology
crushing
energy absorption
compression load
buckling
aluminum honeycomb core
Elastic moduli
Compression
Crushing
Aluminum alloys
Honeycomb structures
Buckling
Energy absorption
Online AccessGet full text

Cover

More Information
Summary:This paper presents an experimental study of the compressive response of hexagonal honeycomb core from the initial elastic regime to a fully crushed state. To understand the crushing mechanism, aluminum honeycomb core was compressed quasi-statically between rigid platens under displacement control. Honeycomb test specimens made of aluminum alloy with different configurations such as cell size, cell number, core density, and specimen size have been tested. During the crushing, the cells buckle elastically and collapse at a higher stress due to inelastic action, after the cells crush by progressive formation of folds on cell walls. The response densifies when folds consume the whole panel height. The peak load recorded during tests corresponded to the buckling of honeycomb cells. The different specimens showed similar load/displacement curves, and the differences observed were only due to the influence of the core density, number of cells, and specimens size on mechanical behavior of hexagonal honeycomb core which has a very important role in the energy absorption capacity. In addition, this study allowed us to build a database of experimental tests for various configurations and allowed us to know the precise energy absorption capacity.
ISSN:1059-9495
1544-1024
DOI:10.1007/s11665-018-3852-2