Evolution of crystal stress distribution on elastoplastic deformation of polycrystalline solids

S. Y. Chung, T. S. Han

Research output: Contribution to conferencePaper

Abstract

Stress tensor of plastically deforming polycrystalline solids can be obtained from the development of synchrotron X-ray diffraction experiment techniques. The mechanism behind the stress tensor evolution of plastic deformation of polycrystalline solids is presented in this study. The elastoplastic behavior of polycrystals is investigated using a simulation model that is calibrated with the X-ray diffraction experiment results of a copper specimen under uniaxial tension. The preferred crystal stress direction and its evolution pattern are examined by identifying the angular distance between the crystal stress direction and the single crystal yield surface vertices as well as the applied loading direction. It is confirmed that crystal stress tends to move toward the closest vertex of the single crystal yield surface to the applied loading direction, as plasticity develops.

Original languageEnglish
Publication statusPublished - 2013 Jan 1
Event13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013 - Sapporo, Japan
Duration: 2013 Sep 112013 Sep 13

Other

Other13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013
CountryJapan
CitySapporo
Period13/9/1113/9/13

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Stress concentration
Crystals
Tensors
Single crystals
X ray diffraction
Polycrystals
Synchrotrons
Plasticity
Plastic deformation
Experiments
Copper

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction

Cite this

Chung, S. Y., & Han, T. S. (2013). Evolution of crystal stress distribution on elastoplastic deformation of polycrystalline solids. Paper presented at 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013, Sapporo, Japan.
Chung, S. Y. ; Han, T. S. / Evolution of crystal stress distribution on elastoplastic deformation of polycrystalline solids. Paper presented at 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013, Sapporo, Japan.
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Chung, SY & Han, TS 2013, 'Evolution of crystal stress distribution on elastoplastic deformation of polycrystalline solids' Paper presented at 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013, Sapporo, Japan, 13/9/11 - 13/9/13, .

Evolution of crystal stress distribution on elastoplastic deformation of polycrystalline solids. / Chung, S. Y.; Han, T. S.

2013. Paper presented at 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013, Sapporo, Japan.

Research output: Contribution to conferencePaper

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T1 - Evolution of crystal stress distribution on elastoplastic deformation of polycrystalline solids

AU - Chung, S. Y.

AU - Han, T. S.

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N2 - Stress tensor of plastically deforming polycrystalline solids can be obtained from the development of synchrotron X-ray diffraction experiment techniques. The mechanism behind the stress tensor evolution of plastic deformation of polycrystalline solids is presented in this study. The elastoplastic behavior of polycrystals is investigated using a simulation model that is calibrated with the X-ray diffraction experiment results of a copper specimen under uniaxial tension. The preferred crystal stress direction and its evolution pattern are examined by identifying the angular distance between the crystal stress direction and the single crystal yield surface vertices as well as the applied loading direction. It is confirmed that crystal stress tends to move toward the closest vertex of the single crystal yield surface to the applied loading direction, as plasticity develops.

AB - Stress tensor of plastically deforming polycrystalline solids can be obtained from the development of synchrotron X-ray diffraction experiment techniques. The mechanism behind the stress tensor evolution of plastic deformation of polycrystalline solids is presented in this study. The elastoplastic behavior of polycrystals is investigated using a simulation model that is calibrated with the X-ray diffraction experiment results of a copper specimen under uniaxial tension. The preferred crystal stress direction and its evolution pattern are examined by identifying the angular distance between the crystal stress direction and the single crystal yield surface vertices as well as the applied loading direction. It is confirmed that crystal stress tends to move toward the closest vertex of the single crystal yield surface to the applied loading direction, as plasticity develops.

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M3 - Paper

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Chung SY, Han TS. Evolution of crystal stress distribution on elastoplastic deformation of polycrystalline solids. 2013. Paper presented at 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013, Sapporo, Japan.