Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
EVALUATION OF STATISTICAL ENERGY ANALYSIS PARAMETERS THROUGH FINITE ELEMENT METHOD APPLIED TO STRUCTURES EMPLOYED IN NAVAL APPLICATIONS
Submission Author:
José Guimarães , SC , Brazil
Co-Authors:
Gabriel quixaba, Newton Soeiro, Leopoldo Bastos, José Guimarães
Presenter: José Guimarães
doi://10.26678/ABCM.COBEM2017.COB17-2033
Abstract
When dealing with vibrational problems at high frequencies or structures with high modal density such as those composed of plates, deterministic approaches such as Finite Element Method (MEF) or Boundary Elements Method (BEM) become impracticable due to computational requirements related to model discretization and error propagation issues. Such problems are of major importance in various fields of engineering within applications in the aerospace, aeronautical, and naval industries. In this context, it is important to use alternative approaches in order to overcome the difficulties presented by traditional methods. Statistical Energy Analysis (SEA) uses statistical methods, which allow the calculation of parameters, such as the coupling loss factor. This parameter is very useful for design of structures in which it is desirable to reduce vibration transmission. Therefore, the present work aims on the numerical analysis of the coupling loss factor for several plate arrangements. To achieve this, MEF and SEA approaches are used. Such analyzes were carried out with the purpose of identifying the arrangements that reduce the vibrational energy transmission between interest components. Those configurations are present in naval applications, such as in engine supports and brackets used in boats.
Keywords
finite elements method, Statistical Energy Analysis
