Experimental and Numerical Analysis of AA3003 Honeycomb Sandwich Panel with Different Configurations

摘要

Honeycomb sandwich structures are increasing being used to replace traditional materials in highly load applications. In the present work two cases are studied one with face sheets (skin) of 0.5mm thickness and the other with 0.9mm of the aluminum (AA3003) hexagonal honeycomb. The numerical investigation to the different core angles (60°, 90°, 120°) of hexagonal honeycomb are made and submitted to free vibration by ANSYS. It is clear that angle 120° gives a higher natural frequencies than other core angles. Designing and manufacturing the die and punch of the hexagonal honeycomb panel with core angle 120° is made. An experimental and numerical works of the three point bending test is used to evaluate the stiffness of the honeycomb panel. Two punch velocities are used (0.1mm/sec and 0.01 mm/sec) it is concluded that the stiffness of honeycomb panel increased with increasing the thickness of the face sheets with ratio 30% where punch velocity 0.1mm/sec and 81.78% with 0.01mm/sec. A comparison of the results are made and a good agreement is evident.