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ID 41267
file
creator
Daifuku, Masafumi
Nakano, Youhei
Nakagawa, Kohya
Yamamoto, Takashi
subject
Damping material
Optimal design
Topology optimization
Sensitivity analysis
Finite element method
NDC
Technology. Engineering
abstract
In this research, we propose a new objective function for optimizing damping materials to reduce the resonance peak response in the frequency response problem, which cannot be achieved using existing criteria. The dynamic compliance in the frequency response problem is formulated as the scalar product of the conjugate transpose of the amplitude vector and the force vector of the loading nodes. The proposed objective function methodology is implemented using the common solid isotropic material with penalization (SIMP) method for topology optimization. The optimization problem is formulated as maximizing the complex part of the proposed complex dynamic compliance under a volume constraint. 2D and 3D numerical examples of optimizing the distribution of the damping material on the host structure are provided to illustrate the validity and utility of the proposed methodology. In these numerical studies, the proposed objective function worked well for reducing the response peak in both lower and upper excitation frequencies around the resonance. By adjusting the excitation frequency, multi-resonance peak reduction may be achieved with a single frequency excitation optimization.
description
This research was partially supported by JSPS KAKENHI Grant Numbers 25820422 and 25630436.
journal title
Journal of Sound and Vibration
volume
Volume 365
start page
230
end page
243
date of issued
2016-03-17
issn
0022-460X
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
Copyright (c) 2015 ElsevierLtd. All rights reserved.
relation url
department
Graduate School of Engineering