MODELLING LIQUID–STRUCTURE INTERACTIONS WITHIN THE FRAMEWORK OF STATISTICAL ENERGY ANALYSIS

✍ Scribed by M. LIU; A.J. KEANE; R. EATOCK TAYLOR

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 385 KB
• Volume: 238
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.1999.3132

✦ Synopsis

This paper presents some work undertaken as part of a managed programme in statistical energy analysis (SEA) and its application to problems with liquid loadings. A study of vibrations involving a coupled #uid}structural system has been carried out and the results from this used to examine aspects of statistical energy analysis modelling in this context. The study involved a series of numerical analyses undertaken using the "nite element method. In dealing with coupled systems consisting of #uids and structures two approaches were employed: direct FE models using elements formulated for acoustic and solid domains, and modal representation of the solids in the coupled models. Dynamic response analysis was then performed for the combined models. A wide spectrum of energy levels was obtained when the models were subjected to various types of loading. Based on these numerical analysis results a number of SEA models were established with di!erent topological interconnections. These were then used to make forced response predictions that could be compared with full "nite element calculations. Various test case results are presented and associated conclusions drawn from the study. It is shown that the more complex SEA models do not necessarily give improved accuracy.