Study on Bending Properties of Double Layer Aluminum Honeycomb Core Sandwich Panels

The dynamic responses of honeycomb sandwich panels (HSPs) subjected to in-plane projectile impact were studied by means of explicit nonlinear finite element simulations using LS-DYNA. The HSPs consisted of two identical aluminum alloy face-sheets and an aluminum honeycomb core featuring three types of unit cell configurations (regular, rectangular-shaped, and reentrant hexagons). The ballistic resistances of HSPs with the three core configurations were first analyzed. It was found that the HSP with the reentrant auxetic honeycomb core has the best ballistic resistance, due to the negative Poisson’s ratio effect of the core. Parametric studies were then carried out to clarify the influences of both macroscopic (face-sheet and core thicknesses, core relative density) and mesoscopic (unit cell angle and size) parameters on the ballistic responses of the auxetic HSPs. Numerical results show that the perforation resistant capabilities of the auxetic HSPs increase as the values of the macroscopic parameters increase. However, the mesoscopic parameters show nonmonotonic effects on the panels' ballistic capacities. The empirical equations for projectile residual velocities were formulated in terms of impact velocity and the structural parameters. It was also found that the blunter projectiles result in higher ballistic limits of the auxetic HSPs.

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Drop Weight Impact Properties of Double Layer Honeycomb Core Sandwich Panels

The Proceedings of Mechanical Engineering Congress Japan ◽

10.1299/jsmemecj.2017.g0300602 ◽

2017 ◽

Vol 2017 (0) ◽

pp. G0300602

Author(s):

Hiroki AKAISHI ◽

Yoshinao KISHIMOTO ◽

Yukiyoshi KOBAYASHI ◽

Toshihisa OHTSUKA

Keyword(s):

Double Layer ◽

Sandwich Panels ◽

Honeycomb Core ◽

Impact Properties ◽

Drop Weight ◽

Weight Impact

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616 Lamination Effect on Drop Weight Impact Properties of Double Layer Honeycomb Core Sandwich Panels

The Proceedings of the Materials and processing conference ◽

10.1299/jsmemp.2010.18._616-1_ ◽

2010 ◽

Vol 2010.18 (0) ◽

pp. _616-1_-_616-4_

Author(s):

Naoyuki ONODERA ◽

Toshihisa OHTSUKA ◽

Yukiyoshi KOBAYASHI ◽

Yoshinao KISHIMOTO

Keyword(s):

Double Layer ◽

Sandwich Panels ◽

Honeycomb Core ◽

Impact Properties ◽

Drop Weight ◽

Weight Impact

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Effect of Core Height Ratio on Drop Weight Impact Properties of Double Layer Honeycomb Core Sandwich Panels

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A ◽

10.1299/kikaia.78.311 ◽

2012 ◽

Vol 78 (787) ◽

pp. 311-323 ◽

Cited By ~ 1

Author(s):

Yoshinao KISHIMOTO ◽

Toshihisa OHTSUKA ◽

Yukiyoshi KOBAYASHI ◽

Naoyuki ONODERA

Keyword(s):

Double Layer ◽

Sandwich Panels ◽

Honeycomb Core ◽

Height Ratio ◽

Impact Properties ◽

Drop Weight ◽

Weight Impact ◽

Core Height

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Analysis of Physical and Mechanical Properties of A3003 Aluminum Honeycomb Core Sandwich Panels

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.867.245 ◽

2017 ◽

Vol 867 ◽

pp. 245-253 ◽

Cited By ~ 4

Author(s):

S. Rajkumar ◽

B. Arulmurugan ◽

M. Manikandan ◽

R. Karthick ◽

S. Kaviprasath

Keyword(s):

Mechanical Properties ◽

Sandwich Panels ◽

Physical And Mechanical Properties ◽

Honeycomb Core ◽

Shear Moduli ◽

The Core ◽

Industrial Sectors ◽

Aluminum Honeycomb ◽

Strength And Stiffness ◽

Core Materials

The demand for lightweight structures made of sandwich panels is ever increasing in many Industrial sectors. Numerous research efforts have been taken by various researchers in this area in terms of weight and cost reduction. Sandwich panel is a composite structure and it is an excellent alternative material in place of weight reduction without sacrificing its strength and stiffness characteristics. The geometrical characteristics of honeycomb core sandwich panels as well as their physical and mechanical properties such as compressive strength, flexural stiffness, core shear moduli, shear strength and stiffness are analyzed. The sandwich panels are available in various shapes and sizes to the service requirement. The commercially available sandwich panels have different core materials such as foams, FRPs and metallic and non metallic materials. The structure of the core typically varies as truss type and honeycomb. The face sheets and the core materials are bonded using thermo-set resins.

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Compression Behavior of Adhesive Butt Joints of Aluminum Hexagonal Core Sandwich Panels with Different Edging Configurations

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.488-489.737 ◽

2012 ◽

Vol 488-489 ◽

pp. 737-741 ◽

Cited By ~ 3

Author(s):

S. Rajkumar ◽

D. Ravindran ◽

P.K. Arul Raj ◽

V. Hariprasath

Keyword(s):

Sandwich Panels ◽

Weight Ratio ◽

Fire Retardant ◽

High Strength ◽

Butt Joint ◽

Honeycomb Core ◽

Butt Joints ◽

Compression Behavior ◽

Complex Shapes ◽

Aluminum Honeycomb

Aluminum honeycomb core sandwich panels are now commercially available and are widely used as light weight materials in aircraft, naval and other applications because of their high strength to weight ratio, high bending stiffness, fire retardant resistance, insulation properties and sound attenuation properties. In all these applications extensive joining is encountered in fabricating the panels to complex shapes. This paper has investigated various edging and configuration details to secure butt joints with adequate soundness through adhesive joining methods. The compression strength of the joints has been assessed experimentally. The configuration of each butt joint is discussed and best combinations of edging and configuration are recommended for successful fabrication of complex assembles with aluminum honey core sandwich panels.

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