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Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 39, Issue 1, January 2017

Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 38

Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 37

Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 36

Journal of the Brazilian Society of Mechanical Sciences and Engineering : Volume 35

An FEM-based method to evaluate and optimize vibration power flow through a beam-to-plate connection

Content Provider	Springer Nature Link
Author	Jordan, Roberto Silva, Olavo M. Neves, Miguel M. Lenzi, Arcanjo
Copyright Year	2015
Abstract	Power flow is an important measure in vibratory energy propagation path analysis. For one-dimensional structural elements, i.e., bars or beams, power flow is obtained using a relationship involving degrees of freedom (DOF) of interest, and the respective internal forces. Several published works on vibration analysis involving the finite element method (FEM) and its optimization describe measures of interest only in terms of DOF (such as displacement and mean square velocity). However, in scenarios involving the coupling of different structures, these measures are inadequate. For example, minimizing only dynamical displacements at specific points in a structure could result in the internal forces at those points becoming unacceptably large. In such cases, minimizing power flow is preferable over minimizing displacements. In this manuscript, using FEM and a gradient-based optimization method, the authors propose a technique to evaluate and optimize vibratory power flow specifically in cases involving beam–plate coupling. The total power flow at the connection point is defined as a function of the global displacement vector, and it is evaluated for a given frequency by harmonic analysis; the relevant sensitivities are obtained using elementary matrices and the adjoint method. Geometrical parameters of the beam are used as design variables. A description of the methodology and two examples of its application to beam–plate structures are presented.
Starting Page	413
Ending Page	426
Page Count	14
File Format	PDF
ISSN	16785878
Journal	Journal of the Brazilian Society of Mechanical Sciences and Engineering
Volume Number	39
Issue Number	2
e-ISSN	18063691
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-05-03
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Frequency domain Sensitivities Mechanical Engineering Vibration power flow Beam–plate structures Optimization Finite element
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Industrial and Manufacturing Engineering Automotive Engineering Mechanical Engineering Aerospace Engineering

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