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

<div>Optimal design at 1400 Hz: (a) STLs of the baseline and optimized models; (b) iteration steps; (c) configurations of the optimized gradient NPR models; (d) mechanical properties of the DAHs in the optimized gradient NPR models.</div>

Shock and Vibration

fig14

Figure 14

Figure 14: Vibration and Sound Transmission Performance of Sandwich Panels with Uniform and Gradient Auxetic Double Arrowhead Honeycomb Cores 