Lumped element modeling of operational structures by inverting the mobility models


Autoria(s): Kim, Sang-Myeong
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

18/03/2015

18/03/2015

20/12/2014

Resumo

This paper is concerned with what a source precisely sees when it drives a receiver such as a continuous structural object. An equivalent lumped element system consisting of masses, springs and dampers is developed to visually represent the operational structural dynamics of a single-input structure at the driving point. The development is solely based on the mobility model of the driving point response. The mobility model is mathematically inverted to give the impedance model that is suitable for lumped element modeling. The two types of structures studied are unconstrained inertial objects and constrained resilient objects. The lumped element systems presented suggest a new view to dynamics that a single-input flexible structure in operation can be decomposed into the two subsystems: a base system of single degree of freedom (or of a mass for an inertial object) whose mass is in contact with the source and an appendage system consisting of a series of oscillators each of which is attached to the base mass. The driving point response is a result of the coupling between the two subsystems. (C) 2014 Elsevier Ltd. All rights reserved.

Formato

106-117

Identificador

http://dx.doi.org/10.1016/j.ymssp.2014.04.001

Mechanical Systems And Signal Processing. London: Academic Press Ltd- Elsevier Science Ltd, v. 49, n. 1-2, p. 106-117, 2014.

0888-3270

http://hdl.handle.net/11449/116803

10.1016/j.ymssp.2014.04.001

WOS:000338809100010

Idioma(s)

eng

Publicador

Elsevier B.V.

Relação

Mechanical Systems And Signal Processing

Direitos

closedAccess

Palavras-Chave #Modal analysis #Impedance method #Lumped element modeling #Operational structural dynamics
Tipo

info:eu-repo/semantics/article