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Large scale dislocation dynamics sim...

Wang, Zhiqiang.

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Large scale dislocation dynamics simulation of bulk deformation.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Large scale dislocation dynamics simulation of bulk deformation./
Author:	Wang, Zhiqiang.
Description:	115 p.
Notes:	Source: Dissertation Abstracts International, Volume: 66-02, Section: B, page: 1141.
Contained By:	Dissertation Abstracts International66-02B.
Subject:	Engineering, Mechanical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3164298
ISBN:	9780496991204

Large scale dislocation dynamics simulation of bulk deformation.
Wang, Zhiqiang.

Large scale dislocation dynamics simulation of bulk deformation. - 115 p.

Source: Dissertation Abstracts International, Volume: 66-02, Section: B, page: 1141.

Thesis (Ph.D.)--University of California, Los Angeles, 2004.

In this work, the method of Parametric Dislocation Dynamics (PDD) is utilized to develop new computational methods for the simulation of crystal plasticity at the microscale. A vector form of the elastic field is developed and utilized within the PDD framework. A new theoretical treatment for the elastic field of dislocation ensembles has resulted in a multipole expansion, which is shown to be convergent for distance greater than the size of the cell containing the dislocation ensemble. The method is shown to be very efficient for calculations of the long-range elastic field.

ISBN: 9780496991204Subjects--Topical Terms:

783786
Engineering, Mechanical.

Large scale dislocation dynamics simulation of bulk deformation.
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035 $a (UnM)AAI3164298
035 $a AAI3164298
040 $a UnM $c UnM
100 1 $a Wang, Zhiqiang. $3 1913521
245 1 0 $a Large scale dislocation dynamics simulation of bulk deformation.
300 $a 115 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-02, Section: B, page: 1141.
500 $a Chair: Nasr M. Ghoniem.
502 $a Thesis (Ph.D.)--University of California, Los Angeles, 2004.
520 $a In this work, the method of Parametric Dislocation Dynamics (PDD) is utilized to develop new computational methods for the simulation of crystal plasticity at the microscale. A vector form of the elastic field is developed and utilized within the PDD framework. A new theoretical treatment for the elastic field of dislocation ensembles has resulted in a multipole expansion, which is shown to be convergent for distance greater than the size of the cell containing the dislocation ensemble. The method is shown to be very efficient for calculations of the long-range elastic field.
520 $a A parallel computer code for the simulation of single crystal plasticity is developed. Some of the fundamental concerns involved in dislocation interactions have been calibrated by direct comparison with in-situ experiments on thin film copper foils. Simulations of the elasto-plastic deformation of 5 and 10 micron size single copper crystals are performed. Predictions of the work hardening and microstructure are shown to be consistent with experiments.
590 $a School code: 0031.
650 4 $a Engineering, Mechanical. $3 783786
690 $a 0548
710 2 0 $a University of California, Los Angeles. $3 626622
773 0 $t Dissertation Abstracts International $g 66-02B.
790 1 0 $a Ghoniem, Nasr M., $e advisor
790 $a 0031
791 $a Ph.D.
792 $a 2004
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3164298