Optimization of Noise Transfer Path Based on the Composite Panel Acoustic and Modal Contribution Analysis

Figure 3

The structural modal of an enclosed cab. (a) 25.7 Hz: 1^st structural modal. (b) 32.8 Hz: 2^nd structural modal. (c) 44.9 Hz: 3^rd structural modal. (d) 46.8 Hz: 4^th structural modal.

(a)

(b)

(c)

(d)