Acoustic performance of rubber baffle with cylindrical duct

In this paper, rubber in the form of cylindrical duct is used as underwater acoustic reflection baffle, its mechanism is described. The formula for calculating the main acoustic performances of baffle are derived by static approximation. The elementary material of baffle are tested, indicating the dynamic mechanical performances. For an immersed baffle model, theoretical calculation and analysis have been carried out at different frequencies, giving baffle performance variation with loss factor, shear modulus as well as thickness of this kind of material.