國立虎尾科技大學 |

Mechanics of soft active materials.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Mechanics of soft active materials./
作者:	Zhao, Xuanhe.
面頁冊數:	1 online resource (108 pages)
附註:	Source: Dissertation Abstracts International, Volume: 70-11, Section: B, page: 6980.
Contained By:	Dissertation Abstracts International70-11B.
標題:	Mechanics. -
電子資源:	click for full text (PQDT)
ISBN:	9781109496529

Mechanics of soft active materials.
Zhao, Xuanhe.

Mechanics of soft active materials. - 1 online resource (108 pages)

Source: Dissertation Abstracts International, Volume: 70-11, Section: B, page: 6980.

Thesis (Ph.D.)

Includes bibliographical references

Soft active materials, mostly elastomers and polymeric gels, are being developed to mimic a salient feature of life: movement in response to stimuli. For example, when an electric voltage is applied across a layer of a dielectric elastomer, the layer reduces in thickness and expands in area, giving a strain greater than 100%. As another example, in response to a small change of pH or temperature, a hydrogel may absorb a large amount of water and increase its volume over 100 times. The mechanics involved in these processes is important, interesting, and not well understood. This thesis studies large deformations and instabilities in dielectric elastomers and polymeric gels.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781109496529Subjects--Topical Terms:

527684
Mechanics.
Index Terms--Genre/Form:

554714
Electronic books.

Mechanics of soft active materials.
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099 $a TUL $f hyy $c available through World Wide Web
100 1 $a Zhao, Xuanhe. $3 1180436
245 1 0 $a Mechanics of soft active materials.
264 0 $c 2009
300 $a 1 online resource (108 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertation Abstracts International, Volume: 70-11, Section: B, page: 6980.
500 $a Adviser: Zhigang Suo.
502 $a Thesis (Ph.D.) $c Harvard University $d 2009.
504 $a Includes bibliographical references
520 $a Soft active materials, mostly elastomers and polymeric gels, are being developed to mimic a salient feature of life: movement in response to stimuli. For example, when an electric voltage is applied across a layer of a dielectric elastomer, the layer reduces in thickness and expands in area, giving a strain greater than 100%. As another example, in response to a small change of pH or temperature, a hydrogel may absorb a large amount of water and increase its volume over 100 times. The mechanics involved in these processes is important, interesting, and not well understood. This thesis studies large deformations and instabilities in dielectric elastomers and polymeric gels.
520 $a The thesis first presents a nonlinear field theory for deformable dielectrics. The theory uses measurable quantities to define field variables. The definitions lead to decoupled field equations, and electromechanical coupling enters the theory through material laws. We use the theory to study electromechanical instability and coexistent states in dielectric elastomers. A computational method is also developed to analyze inhomogeneous deformations in complicated structures of dielectric elastomers.
520 $a The second part of the thesis discusses large deformation and mass transportation in polymeric gels. A gel can undergo large deformation of two modes: local rearrangement and long-range migration. We assume that the local rearrangement is instantaneous, and model the long-range migration by assuming that the solvent molecules diffuse inside the gel. We further study inhomogeneous and anisotropic deformations and instabilities in gels constrained by rigid materials.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Mechanics. $3 527684
650 4 $a Mechanical engineering. $3 557493
650 4 $a Materials science. $3 557839
655 7 $a Electronic books. $2 local $3 554714
690 $a 0346
690 $a 0548
690 $a 0794
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Harvard University. $3 1180437
773 0 $t Dissertation Abstracts International $g 70-11B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3385430 $z click for full text (PQDT)