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

<div>Vibrating deformations of the considered DAH sandwich models: (a) model 3 and (b) model 6 at 500, 1000, and 1400 Hz, where <i>δ</i><sub>m</sub> denotes the displacement magnitude of the middle bottom face sheet.</div>

Shock and Vibration

fig9

Figure 9

Figure 9: Vibration and Sound Transmission Performance of Sandwich Panels with Uniform and Gradient Auxetic Double Arrowhead Honeycomb Cores 