Sound Insulation of Multilayer Glazing in Separate Covers

An engineering method for calculating the sound insulation of multilayer glazing with up to 5 glasses is presented. The calculation is based on analytical expressions for determining the coefficients of resonant and non-resonant sound transmission. The calculations take into account resonant frequencies of the “mass-elasticity-mass” type, calculated for systems with up to 4 degrees of freedom. Total losses in the material, radiation and outflow into adjacent structures were also taken into account. The results of measurements of sound insulation of 4–5 complex glazing, the corresponding design of noise-proof windows in separate covers and an assessment of the convergence of the results of calculations of sound insulation and experiment are shown. The results of measurements of multilayer glazing in combination with the KIV-125 air exchange device, as well as the results of measurements of noise-proof windows in separate covers with a special air exchange device are also presented.

S.N. OVSYANNIKOV^1,2, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
A.S. SAMOKHVALOV^1,2, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.);
I.L. SHUBIN², Doctor of Sciences (Engineering), (This email address is being protected from spambots. You need JavaScript enabled to view it.)

¹ Tomsk State University of Architecture and Building (TSUAB) (2, Solyanaya Square, Tomsk, 634003, Russian Federation)
² Research Institute of building physics (NIISF) (21, Locomotive tr., 127238, Russian Federation)

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