Published January 1, 2019 | Version v1
Journal article Open

A modal impedance-based statistical energy analysis for vibro-acoustic analysis of complex systems having structural uncertainty

  • 1. Dokuz Eylul Univ, Dept Mech Engn, TR-35397 Izmir, Turkey

Description

A modal impedance-based statistical energy analysis for point, line, and area connected complex structural-acoustic systems is introduced. The proposed methodology is applied to perform mid- and high-frequency vibro-acoustic analysis of a cabinet model. The cabinet is composed of several composite plates with local mass variability simulating structural uncertainty, isotropic beams, and an acoustic enclosure. The method uses point mobilities, which are determined using modal parameters obtained by finite element method, to define line and area mobilities via dimension reducing principle. The methodology presented here is successfully verified by several numerical and experimental Monte Carlo computations. With this study, conventional statistical energy analysis is improved for mid-frequency vibro-acoustic analysis of complex systems.

Files

bib-ccb2669a-2cf9-4ff7-9cbf-658e6ff8b2d4.txt

Files (296 Bytes)

Name Size Download all
md5:4fe80aefab067fceebf17032501980a4
296 Bytes Preview Download