Design of two-dimensionally curved panels for sandwich cores

Alternatives to honeycomb and corrugated core sandwich designs are explored to provide inexpensive and comparable performing sub-laminates that can be easily manufactured into more complex shapes. The core designs utilize two-dimensionally curved(1) panels that can be manufactured using common manufacturing methods such as rolling, thermoforming, and stamping. The panels are designed using mathematical formulas and algorithms to provide quasi-isotropic behavior in bending. Experimental results indicate that these designs can provide comparable performance to honeycomb core laminates.