語系:
繁體中文
English
說明(常見問題)
回圖書館首頁
手機版館藏查詢
登入
回首頁
切換:
標籤
|
MARC模式
|
ISBD
Dispersion and Dissipation in Viscoe...
~
Bacquet, Clemence L.
FindBook
Google Book
Amazon
博客來
Dispersion and Dissipation in Viscoelastic Metamaterials: Theory, Experiments and Applications.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Dispersion and Dissipation in Viscoelastic Metamaterials: Theory, Experiments and Applications./
作者:
Bacquet, Clemence L.
出版者:
Ann Arbor : ProQuest Dissertations & Theses, : 2018,
面頁冊數:
111 p.
附註:
Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.
Contained By:
Dissertation Abstracts International79-10B(E).
標題:
Acoustics. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10792652
ISBN:
9780355966251
Dispersion and Dissipation in Viscoelastic Metamaterials: Theory, Experiments and Applications.
Bacquet, Clemence L.
Dispersion and Dissipation in Viscoelastic Metamaterials: Theory, Experiments and Applications.
- Ann Arbor : ProQuest Dissertations & Theses, 2018 - 111 p.
Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.
Thesis (Ph.D.)--University of Colorado at Boulder, 2018.
This item is not available from ProQuest Dissertations & Theses.
Phononic materials comprise microstructures engineered for unique, and often exotic, acoustic or elastic wave-propagation characteristics. For example, an elastic metamaterial, which is a type of phononic material, may be tuned to exhibit a band gap at frequencies corresponding to wavelengths much longer than the size of the microstructure. A common approach for realizing such extreme dynamical properties is to intrinsically distribute local resonators along the domain of the material. This concept has been extensively studied in the context of low-frequency vibration shielding, subwavelength focusing and imaging, and acoustic/elastic cloaking. However, despite the importance of dissipation in wave propagation, the effects of damping are often neglected in these applications, and in the elastodynamics literature in general. Incorporating damping in the treatment of metamaterials does not only provide a more realistic description of their dynamical behavior, but also allows one to understand and manipulate the complex interplay between dispersion, local resonances, and dissipation. The dispersion and resonance properties of a damped metamaterial may be controlled by changing the levels of dissipation, and, conversely, it is possible to enhance, or reduce, dissipation by engineering the dispersion properties.
ISBN: 9780355966251Subjects--Topical Terms:
879105
Acoustics.
Dispersion and Dissipation in Viscoelastic Metamaterials: Theory, Experiments and Applications.
LDR
:03637nmm a2200337 4500
001
2201981
005
20190503113354.5
008
201008s2018 ||||||||||||||||| ||eng d
020
$a
9780355966251
035
$a
(MiAaPQ)AAI10792652
035
$a
(MiAaPQ)colorado:15448
035
$a
AAI10792652
040
$a
MiAaPQ
$c
MiAaPQ
100
1
$a
Bacquet, Clemence L.
$0
(orcid)0000-0002-7577-0857
$3
3428734
245
1 0
$a
Dispersion and Dissipation in Viscoelastic Metamaterials: Theory, Experiments and Applications.
260
1
$a
Ann Arbor :
$b
ProQuest Dissertations & Theses,
$c
2018
300
$a
111 p.
500
$a
Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.
500
$a
Adviser: Mahmoud I. Hussein.
502
$a
Thesis (Ph.D.)--University of Colorado at Boulder, 2018.
506
$a
This item is not available from ProQuest Dissertations & Theses.
520
$a
Phononic materials comprise microstructures engineered for unique, and often exotic, acoustic or elastic wave-propagation characteristics. For example, an elastic metamaterial, which is a type of phononic material, may be tuned to exhibit a band gap at frequencies corresponding to wavelengths much longer than the size of the microstructure. A common approach for realizing such extreme dynamical properties is to intrinsically distribute local resonators along the domain of the material. This concept has been extensively studied in the context of low-frequency vibration shielding, subwavelength focusing and imaging, and acoustic/elastic cloaking. However, despite the importance of dissipation in wave propagation, the effects of damping are often neglected in these applications, and in the elastodynamics literature in general. Incorporating damping in the treatment of metamaterials does not only provide a more realistic description of their dynamical behavior, but also allows one to understand and manipulate the complex interplay between dispersion, local resonances, and dissipation. The dispersion and resonance properties of a damped metamaterial may be controlled by changing the levels of dissipation, and, conversely, it is possible to enhance, or reduce, dissipation by engineering the dispersion properties.
520
$a
The objective of this thesis is to advance the understanding of the connection between dispersion, local resonances, and dissipation in viscoelastically damped metamaterials and to develop a methodology for precise engineering of the dissipation. A viscoelastic damping model is fitted with experimental data for accurate prediction of dissipation within the dispersion and finite-structure analysis frameworks. An intriguing phenomenon that is investigated using this modeling framework is metadamping---a dissipation emergence phenomenon caused by the presence of local resonances. This concept is investigated in a real-world system, both numerically and experimentally. A methodology is developed to determine the levels of dissipation in a finite metamaterial pillared beam structure using only unit-cell analysis. With this information, guidelines are provided that enable engineering of the dissipation by varying the unit-cell dispersion properties. Results show that dissipation can either be enhanced, or reduced, within prescribed frequency ranges without sacrificing stiffness. This concept is first shown in the context of freely propagating waves and then extended to harmonically driven waves.
590
$a
School code: 0051.
650
4
$a
Acoustics.
$3
879105
650
4
$a
Aerospace engineering.
$3
1002622
650
4
$a
Physics.
$3
516296
690
$a
0986
690
$a
0538
690
$a
0605
710
2
$a
University of Colorado at Boulder.
$b
Aerospace Engineering.
$3
1030473
773
0
$t
Dissertation Abstracts International
$g
79-10B(E).
790
$a
0051
791
$a
Ph.D.
792
$a
2018
793
$a
English
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10792652
筆 0 讀者評論
館藏地:
全部
電子資源
出版年:
卷號:
館藏
1 筆 • 頁數 1 •
1
條碼號
典藏地名稱
館藏流通類別
資料類型
索書號
使用類型
借閱狀態
預約狀態
備註欄
附件
W9378530
電子資源
11.線上閱覽_V
電子書
EB
一般使用(Normal)
在架
0
1 筆 • 頁數 1 •
1
多媒體
評論
新增評論
分享你的心得
Export
取書館
處理中
...
變更密碼
登入