The Effects on Acoustic Characteristics of Aircraft with Constrained Layer Damping
Abstract— The constrained layer damping(CLD) could suppress vibration and sound radiation of thinwalled
structure like aircraft fuselage. By calculating the sound transmission loss of panel with CLD based
on finite element analysis method and sound pressure level of aircraft with CLD based on statistical energy
analysis method, and compared with experimental results from standing wave tube and reverberationanechoic
chamber, the acoustic characteristics of aircraft and panel with CLD and the effect of CLD's
parameters such as density and coverage have been investigated. The experimental and simulation results
show good consistency and trend.
Index Terms— acoustic, constrained layer damping, aircraft.
Zixin Feng, Feng Han, Junwei Xu
Shanghai Aircraft Design and Research Institute of COMAC, CHINA
Cite: Zixin Feng, Feng Han, Junwei Xu, "The Effects on Acoustic Characteristics of Aircraft with Constrained Layer Damping," Proceedings of 2019 the 9th International Workshop on Computer Science and Engineering, pp. 1002-1009, Hong Kong, 15-17 June, 2019.