Brief Description of Failure Mode of Aluminum Honeycomb Panel Sandwich Structure

aluminum honeycomb panel是由上下两块薄的外层表板(铝板)和充填其中用以保证与两块表板砌合在一起共同工作的，软而轻的中间层(铝蜂窝芯) 所组成。夹层板的设计思想与工字梁相似，即主要承载的表板起着翼板的作用，而充填在中间的夹心主要承受剪应力，起着暖板的作用。由于其主要受力的两外层表板的结构高度大，故有较大的剖面惯性短，所以它具有重量轻、强度高和剐度大的特点，另外若适当选择表板与夹心，还可以获得良好的抗震、隔热、隔音等性能，由于以上优点，在航空、字航部门首先应用。

aluminum honeycomb panelThe basic requirement of structural design is: must be able to resist the following various modes of damage. In the actual structural design, the various failure modes that may occur should be checked.

1.Overall instability: The bending rigidity of the sandwich structure is not enough.

2.Core shear wrinkle: The core shear modulus is too small, and the adhesive shear strength is too low, resulting in final failure after deflection.

3.Instability of the panel between the honeycomb holes(wrinkling): the panel is too thin honeycomb hole is too large, this phenomenon in the panel honeycomb hole development may cause damage. This results in wrinkling of the panel.

4.Panel cracking: The thickness of the whole board is not enough, the thickness of the panel is not enough, and the strength of the panel is not enough.

5.core shear failure: Core shear strength is not enough. The thickness of the whole plate is not enough.

6.Core Deflection Collapse: Core plane compression strength is not enough. The deflection is too large.

7.Core local pressure loss: The core compression strength is too small.

8.Panel separated from core: Insufficient bonding strength between panel and core.

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