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A study of grain rotations and void ...

Priddy, Matthew William.

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A study of grain rotations and void nucleation in aluminum triple junctions using molecular dynamics and crystal plasticity.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	A study of grain rotations and void nucleation in aluminum triple junctions using molecular dynamics and crystal plasticity./
作者:	Priddy, Matthew William.
面頁冊數:	129 p.
附註:	Source: Masters Abstracts International, Volume: 48-06, page: 3770.
Contained By:	Masters Abstracts International48-06.
標題:	Applied Mechanics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1479239
ISBN:	9781124116518

A study of grain rotations and void nucleation in aluminum triple junctions using molecular dynamics and crystal plasticity.
Priddy, Matthew William.

A study of grain rotations and void nucleation in aluminum triple junctions using molecular dynamics and crystal plasticity. - 129 p.

Source: Masters Abstracts International, Volume: 48-06, page: 3770.

Thesis (M.S.)--Mississippi State University, 2010.

This study focuses on molecular dynamics (MD) simulations, coupled with a discrete mathematical framework, and crystal plasticity (CP) simulations to investigate micro void nucleation and the plastic spin. The origin and historical use of the plastic spin are discussed with particular attention to quantifying the plastic spin at the atomistic scale. Two types of MD simulations are employed: (a) aluminum single crystals undergoing simple shear; and (b) aluminum triple junctions (TJ) with varying grain orientations and textures undergoing uniaxial tension. The high-angle grain boundary simulations nucleate micro voids at or around the TJ and the determinant of the deformation gradient shows the ability to predict such events. Crystal plasticity simulations are used to explore the stress-state of the aluminum TJ from uniaxial tension at a higher length scale with results indicating a direct correlation between CP stress-states and the location of micro void nucleation in the MD simulations.

ISBN: 9781124116518Subjects--Topical Terms:

1018410
Applied Mechanics.

A study of grain rotations and void nucleation in aluminum triple junctions using molecular dynamics and crystal plasticity.
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245 1 2 $a A study of grain rotations and void nucleation in aluminum triple junctions using molecular dynamics and crystal plasticity.
300 $a 129 p.
500 $a Source: Masters Abstracts International, Volume: 48-06, page: 3770.
500 $a Adviser: Philip M. Gullett.
502 $a Thesis (M.S.)--Mississippi State University, 2010.
520 $a This study focuses on molecular dynamics (MD) simulations, coupled with a discrete mathematical framework, and crystal plasticity (CP) simulations to investigate micro void nucleation and the plastic spin. The origin and historical use of the plastic spin are discussed with particular attention to quantifying the plastic spin at the atomistic scale. Two types of MD simulations are employed: (a) aluminum single crystals undergoing simple shear; and (b) aluminum triple junctions (TJ) with varying grain orientations and textures undergoing uniaxial tension. The high-angle grain boundary simulations nucleate micro voids at or around the TJ and the determinant of the deformation gradient shows the ability to predict such events. Crystal plasticity simulations are used to explore the stress-state of the aluminum TJ from uniaxial tension at a higher length scale with results indicating a direct correlation between CP stress-states and the location of micro void nucleation in the MD simulations.
520 $a Key words: molecular dynamics, crystal plasticity, plastic spin, continuum theory, multiscale modeling, constitutive modeling
590 $a School code: 0132.
650 4 $a Applied Mechanics. $3 1018410
650 4 $a Engineering, Civil. $3 783781
650 4 $a Engineering, Mechanical. $3 783786
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710 2 $a Mississippi State University. $b Civil and Environmental Engineering. $3 1682491
773 0 $t Masters Abstracts International $g 48-06.
790 1 0 $a Gullett, Philip M., $e advisor
790 1 0 $a Horstemeyer, Mark F. $e committee member
790 1 0 $a Marin, Esteban B. $e committee member
790 $a 0132
791 $a M.S.
792 $a 2010
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