Date Available
7-15-2015
Year of Publication
2015
Degree Name
Master of Science in Mechanical Engineering (MSME)
Document Type
Master's Thesis
College
Engineering
Department/School/Program
Mechanical Engineering
First Advisor
Dr. David W. Herrin
Abstract
Frequency based substructuring (FBS) is routinely used to model structural dynamics. It provides a framework for connecting structural subsystems together, assessing path contributions, determining the effect of mount modification, and identifying inverse forces. In this work, FBS methods are extended to include acoustic subsystems and connecting pipes and ducts. Connecting pipes or ducts are modeled using the transfer matrix approach which is commonly used for modeling mufflers and silencers below the plane wave cutoff frequency. The suggested approach is validated using boundary element method (BEM) simulation. Applications of the procedure include determining airborne path contributions, the effect of treating ducts and apertures, and the effect of making lumped acoustic impedance modifications to a subsystem. The method can be simplified and used for determining the effect of design changes on the insertion loss of enclosures.
Recommended Citation
He, Rui, "AIRBORNE PATH FREQUENCY BASED SUBSTRUCTURING METHOD AND ITS APPLICATIONS" (2015). Theses and Dissertations--Mechanical Engineering. 62.
https://uknowledge.uky.edu/me_etds/62
Included in
Acoustics, Dynamics, and Controls Commons, Computer-Aided Engineering and Design Commons
