Skip navigation


  • DSpace logo
  • Home
  • Collections
  • Researcher Profile
  • Explore by
    • Researcher Profile
  • VGU library
  • Help
  • User Guide
  • Sign on to:
    • My DSpace
    • Receive email
      updates
    • Edit Account details

VGU RESEARCH REPOSITORY


Please use this identifier to cite or link to this item: https://epub.vgu.edu.vn/handle/dlibvgu/2185
DC FieldValueLanguage
dc.contributor.authorLe Thi Hoaen_US
dc.date.accessioned2026-03-25T06:51:00Z-
dc.date.available2026-03-25T06:51:00Z-
dc.date.issued2020-
dc.identifier.urihttps://epub.vgu.edu.vn/handle/dlibvgu/2185-
dc.description.abstractThe objective of this thesis is to develop a thermodynamic dislocation theory (TDT) for polycrystals during uniform plastic deformation under tension. Starting from the assumption that all possible grain orientations are equally probable, the mean resolved shear stress and strain in polycrystalline bars subjected to axially symmetric tension or compression are calculated using an averaging method.This mean plastic resolved shear strain is then integrated with the kinetics of thermally activated dislocation depinning to derive the equations of motion for stress. These derivations demonstrate that the geometric factor is $2(1 + \nu)$, where $\nu$ represents Poisson’s ratio.In the subsequent scope of work, a large-scale least-squares analysis will be performed to identify the physics-based parameters of this theory. The study aims to demonstrate that the theoretical stress-strain curves for copper, iron, and steel agree well with the experimental data established by Johnson and Cook (1985)en_US
dc.language.isoenen_US
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectPolycrystalline plasticityen_US
dc.subjectThermally activated mechanismsen_US
dc.subjectDislocation dynamicsen_US
dc.titleNumerical simulation of tension test within the thermodynamic dislocation theoryen_US
dc.typeThesisen_US
item.fulltextWith Fulltext-
item.grantfulltextrestricted-
item.languageiso639-1other-
Appears in Collections:Computational Engineering (CompEng)
Files in This Item:
File Description SizeFormat Existing users please Login
Numerical simulation of tension test within.pdf984.18 kBAdobe PDF
Show simple item record

Google ScholarTM

Check


This item is licensed under a Creative Commons License Creative Commons

© Copyright 2020 by Vietnamese - German University Library.
Add: Ring road 4, Quarter 4, Thoi Hoa Ward, Ben Cat City, Binh Duong Province
Tel.:(0274) 222 0990. Ext.: 70206