ANALYSIS OF SOUND TRANSMISSION THROUGH PERIODICALLY STIFFENED PANELS BY SPACE-HARMONIC EXPANSION METHOD

✍ Scribed by J.-H. LEE; J. KIM

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 301 KB
• Volume: 251
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.2001.4008

✦ Synopsis

An analysis method is developed to study sound transmission characteristics of a thin plate sti!ened by equally spaced line sti!eners. The dynamic equation that describes the vibro-acoustic response of the system is derived by expanding the structural and acoustic responses in terms of the space harmonics and by using the virtual energy method. The series solution can be considered as the exact solution because the structural and acoustic}structural coupling e!ects in the system are fully considered and the solution converges. Parameter studies are conducted for major design parameters to understand the characteristics of the system.

2002 Elsevier Science Ltd.