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A methodology to optimize damping pad application on a complex structure using finite element models

Title	A methodology to optimize damping pad application on a complex structure using finite element models
Author	Şendur, Polat, Gülşen, D., Erman, C., Tinar, E.
Publication Date:	2018
Publication Place	- International Institute of Acoustics and Vibration, IIAV
Subject	Damping, Damping loss factor, Frequency response, Modal analysis, Optimization
Type	Document
Language	English
Digital	Yes
Manuscript	No
Library:	Özyeğin University
Library Asset ID	978-151086845-8
Record ID	04f8612d-a984-48a5-ab6c-5936f0d8112a
Library Location	Mechanical Engineering
Date	2018
Sample Text	Passive constrained layer damping patches have been extensively used for vibration and acoustics applications due to their capability to dissipate vibrational energy into heat. In this study, we perform an optimization study of damping pads on a real 3D structure. For this purpose, finite element models (FEM) of the sheet metal structure and damping pads are created. Correlation of the finite element model with experimental data is performed both on modal analysis and frequency response functions. In order to determine the optimum locations of the damping pads, the body panel is divided into nine regions. Damping pad is applied on each region one by one and the frequency response functions are compared with the panel without any damping pad. Root Mean Square (RMS) based damping index is calculated between these configurations and bare panel, and each region is ranked from highest to lowest based on the damping index. Two optimum configurations are evaluated and resulting frequency response functions are also compared with the full damping pad. Finally, the thickness of the damping pad is varied to see its effect on the frequency response functions.
Cilt	8

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Özyeğin University

A methodology to optimize damping pad application on a complex structure using finite element models

Author Şendur, Polat, Gülşen, D., Erman, C., Tinar, E.

Publication Date 2018

Publication Place - International Institute of Acoustics and Vibration, IIAV

Subject Damping, Damping loss factor, Frequency response, Modal analysis, Optimization

Type Document

Language English

Digital Yes

Manuscript No

Library Özyeğin University

Library Asset ID 978-151086845-8

Record ID 04f8612d-a984-48a5-ab6c-5936f0d8112a

Library Location Mechanical Engineering

Date 2018

Sample Text Passive constrained layer damping patches have been extensively used for vibration and acoustics applications due to their capability to dissipate vibrational energy into heat. In this study, we perform an optimization study of damping pads on a real 3D structure. For this purpose, finite element models (FEM) of the sheet metal structure and damping pads are created. Correlation of the finite element model with experimental data is performed both on modal analysis and frequency response functions. In order to determine the optimum locations of the damping pads, the body panel is divided into nine regions. Damping pad is applied on each region one by one and the frequency response functions are compared with the panel without any damping pad. Root Mean Square (RMS) based damping index is calculated between these configurations and bare panel, and each region is ranked from highest to lowest based on the damping index. Two optimum configurations are evaluated and resulting frequency response functions are also compared with the full damping pad. Finally, the thickness of the damping pad is varied to see its effect on the frequency response functions.

Cilt 8