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Author:

Ma, L. H. (Ma, L. H..) | Yang, Q. S. (Yang, Q. S..) (Scholars:杨庆生)

Indexed by:

CPCI-S EI Scopus

Abstract:

Most hydrogels exhibit coupled chemo-mechanical behaviors when in an aqueous environment with changing salt concentrations. This work presents a theoretical framework and a numerical procedure to describe the coupled mechanical deformation and solvent diffusion of such ion-sensitive hydrogels. A new variational formulation for the coupled governing equations is formulated by implementing the coupled formulations in a finite element procedure in Eulerian frame and further the time-dependent concurrent process of mechanical deformation and solvent diffusion is numerically investigated. The proposed numerical method is demonstrated by analyzing several chemo-mechanical coupling phenomena of initially-swollen hydrogels, such as transient free-swelling and indentation with a spherical punch. The results show that the present model is capable of simulating transient free-swelling and solvent migration in such smart materials subjected to externally-applied mechanical forces.

Keyword:

diffusion variational formulation large deformation Hydrogels chemo-mechanical coupling

Author Community:

  • [ 1 ] [Ma, L. H.]Beijing Univ Technol, Dept Engn Mech, Beijing 100124, Peoples R China
  • [ 2 ] [Yang, Q. S.]Beijing Univ Technol, Dept Engn Mech, Beijing 100124, Peoples R China

Reprint Author's Address:

  • [Ma, L. H.]Beijing Univ Technol, Dept Engn Mech, Beijing 100124, Peoples R China

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Source :

THIRD INTERNATIONAL CONFERENCE ON SMART MATERIALS AND NANOTECHNOLOGY IN ENGINEERING

ISSN: 0277-786X

Year: 2012

Volume: 8409

Language: English

Cited Count:

WoS CC Cited Count: 1

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

Online/Total:336/5462013
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