The Effect of Geometrical Parameters on Resonance Characteristics of Acoustic Metamaterials with Negative Effective Modulus

Figure 7

The relation curves present the relationship between the inner radius and related parameters ( = 9.0 mm, = 0.5 mm). (a) The resonance frequency of SHS. (b) The transmission coefficient. (c) The effective modulus.

(a)

(b)

(c)