US 12,444,395 B1
Composite damping lightweight sound insulation wall
Longxiang Xie, Jiangsu (CN); Xingfang Qian, Jiangsu (CN); Guangzhi Chen, Jiangsu (CN); Lingling Zhang, Jiangsu (CN); and Zhida Han, Jiangsu (CN)
Assigned to Suzhou University of Technology, Jiangsu (CN)
Filed by Suzhou University of Technology, Jiangsu (CN)
Filed on Feb. 26, 2025, as Appl. No. 19/064,573.
Application 19/064,573 is a continuation of application No. PCT/CN2024/116534, filed on Sep. 3, 2024.
Claims priority of application No. 202410898562.6 (CN), filed on Jul. 5, 2024.
Int. Cl. G10K 11/168 (2006.01); G10K 11/172 (2006.01)
CPC G10K 11/168 (2013.01) [G10K 11/172 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A composite damping lightweight sound insulation wall, comprising lightweight sound insulation layers, composite damping layers, and a sound absorption matching layer, wherein the composite damping layers are positioned on both sides of the sound absorption matching layer to form a sandwich structure; and the lightweight sound insulation layers are positioned on outer surfaces of the composite damping layers; each of the composite damping layers comprises damping layers, shear columns, and an air layer, the damping layers are respectively arranged on both ends of the shear columns, the shear columns are periodically distributed along the damping layers, and the air layer is located between the adjacent damping layers; and the sound absorption matching layer consists of porous sound-absorbing material, Helmholtz resonant cavities, and light steel furring, the light steel furring are respectively snap-fitted on both sides of the porous sound-absorbing material, and the Helmholtz resonant cavities are tilted and embedded inside the porous sound-absorbing material,
wherein each of the shear columns is an elastic double C-shaped truncated cone structure, with an upper base radius of 0.5-3 mm, a lower base radius of 1-5 mm, and a height of 3-8 mm; and the shear columns are made of silicone rubber, nitrile rubber, or styrene butadiene rubber.