Vibration and Sound Transmission Performance of Sandwich Panels with Uniform and Gradient Auxetic Double Arrowhead Honeycomb Cores

<div>Sandwich panels with DAH cores from models 1 to 7: (a) the uniform models; (b) the gradient DNPR models; (c) the gradient INPR models.</div>

Shock and Vibration

Figure 2: Vibration and Sound Transmission Performance of Sandwich Panels with Uniform and Gradient Auxetic Double Arrowhead Honeycomb Cores 