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Master's Dissertation
DOI
10.11606/D.18.2012.tde-13032012-085537
Document
Author
Full name
Alexsander Cantalogo
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2011
Supervisor
Committee
Nicoletti, Rodrigo (President)
Alves, Paulo Sérgio Lima
Costa Neto, Alvaro
Title in Portuguese
Modelagem de 'Deadeners' usando NASTRAN e correlação experimental
Keywords in Portuguese
Deadener
Elementos finitos
NVH
Ruído
Vibração
Abstract in Portuguese
Este trabalho visa o desenvolvimento de um modelo em elementos finitos de elementos de dissipação vibratória de base betuminosa, chamados comumente de deadeners. O modelo baseia-se no algoritmo comercial MSC/NASTRAN e é correlacionado e verificado com base em dados experimentais de laboratório. O resultado final deste projeto é um modelo para os deadeners que pode ser utilizado em modelos de elementos finitos de veículos completos, facilitando assim a definição da melhor localização dos mesmos no veículo bem como a otimização de seu uso. O modelo tem melhor resultado em termos de amplitude para frequências abaixo de 200Hz, porém apresenta tendências de superestimar o efeito do amortecimento nos picos de ressonância
Title in English
Modeling "Deadeners" using NASTRAN and experimental correlation
Keywords in English
Deadener
Finite elements
Noise
NVH
Vibration
Abstract in English
This project aims the development of a finite element model of vibration dissipating elements of bituminous base, commonly called "deadeners. The proposed model is based on the finite element commercial algorithm MSC/NASTRAN and is correlated and verified on experimental data from laboratory. The end result of this project is a model for "deadeners" which can be used in finite element models of complete vehicles, thus facilitating better definition of their location in the vehicle as well as the optimization of its use. The model has a better result in terms of amplitude for frequencies below 200 Hz, but shows a tendency to overestimate the effects of damping at the resonance peaks
 
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Publishing Date
2012-03-21
 
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