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A Coupled Viscoelastic and Damage Ap...

Londono Lozano, Juan Guillermo.

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A Coupled Viscoelastic and Damage Approach for Solids with Applications to Ice and Asphalt.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	A Coupled Viscoelastic and Damage Approach for Solids with Applications to Ice and Asphalt./
作者:	Londono Lozano, Juan Guillermo.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
面頁冊數:	166 p.
附註:	Source: Dissertation Abstracts International, Volume: 79-02(E), Section: B.
Contained By:	Dissertation Abstracts International79-02B(E).
標題:	Civil engineering. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10636622
ISBN:	9780355375602

A Coupled Viscoelastic and Damage Approach for Solids with Applications to Ice and Asphalt.
Londono Lozano, Juan Guillermo.

A Coupled Viscoelastic and Damage Approach for Solids with Applications to Ice and Asphalt. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 166 p.

Source: Dissertation Abstracts International, Volume: 79-02(E), Section: B.

Thesis (Ph.D.)--Columbia University, 2017.

As new materials are developed and further concerns on green alternatives and serviceability arise, understanding material behavior during the entire span of their lifetime becomes crucial to engineering applications. Moreover, many problems display a significant dependence to time and loading effects which, by varying across multiple time scales, require material models that incorporate these effects into any valid characterization and prediction. This dissertation aims at proposing a new approach to analyze and predict viscoelastic materials that deteriorate during multiple loading conditions. The model is constructed from mechanical and mathematical basis while satisfying physical laws.

ISBN: 9780355375602Subjects--Topical Terms:

860360
Civil engineering.

A Coupled Viscoelastic and Damage Approach for Solids with Applications to Ice and Asphalt.
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245 1 2 $a A Coupled Viscoelastic and Damage Approach for Solids with Applications to Ice and Asphalt.
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300 $a 166 p.
500 $a Source: Dissertation Abstracts International, Volume: 79-02(E), Section: B.
500 $a Adviser: Haim Waisman.
502 $a Thesis (Ph.D.)--Columbia University, 2017.
520 $a As new materials are developed and further concerns on green alternatives and serviceability arise, understanding material behavior during the entire span of their lifetime becomes crucial to engineering applications. Moreover, many problems display a significant dependence to time and loading effects which, by varying across multiple time scales, require material models that incorporate these effects into any valid characterization and prediction. This dissertation aims at proposing a new approach to analyze and predict viscoelastic materials that deteriorate during multiple loading conditions. The model is constructed from mechanical and mathematical basis while satisfying physical laws.
520 $a In this work, the proposed constitutive law is used for the analysis of the mechanical properties of ice. The mechanical behavior, biaxial envelop and multiple loading types demonstrate the validity of the model when compared to experimental results and other ice models available in the literature. A rigorous calibration scheme for the viscoelastic and damage parameters is also presented.
520 $a Moreover, as material deterioration or damage is modeled in standard Finite Elements software, it is commonly known that computational results can be dependent on the spatial discretization or mesh. That is, damage zone and energy dissipation are dependent on the selection of the mesh yielding a disappearing damage zone and energy dissipation upon refinement. This non-physical behavior is corrected by the novel regularization approach proposed in this document, which introduces a length scale of the material and produces results that are no longer sensitive to the mesh selection.
520 $a The nonlocal damage model is finally used in the analysis of asphalt concrete viscoelastic behavior and cracking prediction. As presented in the ice case, a rigorous calibration approach is presented first followed by the validation to experimental data available in the literature under different loading conditions.
520 $a The coupled viscoelastic and damage model is compared to other model and their Finite Elements implementations are highlighted in terms of computational efficiency. A nonlinear coupled system for solving this problem is programmed as a User Element in a commercial Finite Element analysis software.
590 $a School code: 0054.
650 4 $a Civil engineering. $3 860360
650 4 $a Mechanics. $3 525881
650 4 $a Applied mathematics. $3 2122814
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