Energy absorbing aluminum honeycomb core
Energy absorbing aluminum honeycomb core
Energy absorbing aluminum honeycomb core
Energy absorbing honeycomb refers to a type of functional structural material with hexagonal or similar porous structures as geometric features, specifically designed to efficiently absorb and dissipate kinetic energy through its own large deformation when impacted.
The material of the energy absorbing honeycomb can be made of thick aluminum or carbon steel, stainless steel, titanium alloy, etc; It is usually formed by stamping thick wall panels and then brazing, laser welding, or special bonding. High strength energy absorbing honeycomb made by molding method, with a density of over 150kg/m3.
Energy absorbing aluminum honeycomb core is made of 3003/5052aluminum alloy. A predictable load that can be modified by the use of various alloys, foil thickness, cellsizes, and cell configurations.
| Sample specification and testing result | ||||
| Aluminum alloy | Cellsize | Foil thickness | Compressive strength | Crush strength |
| 5052H18 | 1/16" | 0.04mm | 6.38Mpa | 3.92Mpa |
| 5052H18 | 1/10" | 0.06mm | 9.98Mpa | 4.82Mpa |
| 5052H18 | 1/8" | 0.06mm | 5.48Mpa | 3.25Mpa |
| 3003H1 | 1/10" | 0.06mm | 9.04Mpa | 3.95Mpa |
Parameters of aluminum honeycomb energy absorption performance
1、 Foil thickness
This is the most influential factor. Increasing wall thickness will significantly enhance energy absorption capacity. Studies have shown that simply increasing wall thickness can increase specific energy absorption (SEA) by up to 203.57%. When the energy absorption volume remains constant, increasing the wall thickness results in twice the energy absorption rate as the mass increase rate.
Conventional energy absorbing aluminum honeycomb foil thickness: 0.06mm~0.20mm.
2、 Cellsize
The smaller the cellsize, the finer the pore grid, and the better the energy absorption effect.
3、 Honeycomb core height
Directly determining the effective energy absorption stroke: the higher the height, the longer the collapsible compression distance, and the more total impact energy can be absorbed. The impact on the stiffness and low-speed impact resistance of the structure is relatively small, and it is an auxiliary parameter for adjusting the total energy absorption.
4、 Honeycomb Density
High density honeycomb: high platform force, high specific energy absorption, heavy load, high-speed impact protection;
Low density honeycomb: soft force value, low-speed buffering, mainly for shock absorption and noise reduction.
