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Study on effect of strain rate on 3D surface asperity flattening in uniaxial planar compression by crystal plasticity finite element modelling

Journal Article


Abstract


  • As an important parameter of surface quality for metal manufacturing products, surface roughness is

    affected by the following parameters: original roughness, friction, grain size, grain orientation, stress–

    strain state, and work hardening. Previously, effects of friction and gauged reduction and wavelength

    on surface roughness have already been studied by a 2D surface asperity model in uniaxial planar

    compression. On the basis of previous results, a 3D surface asperity model is developed by employing

    rate-dependent crystal plasticity constitutive model in finite element software ABAQUS. Results from

    electron back scatter diffraction(EBSD) and atomic force microscope(AFM) experiments have also been

    input into the 3D model. Influences of strain rate and texture have been discussed in this paper. The

    calculated results show a good agreement with experimental results. With an increase of reduction, the

    surface asperity flattening under a lower strain rate tends to accelerate; grain size and roughness

    decrease while hardness and stress increase. Under the same reduction, surface roughness with higher

    strain rate 0.01 s1 has a larger flattening rate (lower roughness Ra) than that of surface roughness with

    lower strain rate 0.001 s1. In this study, increased strain rate has no obvious effect on texture.

UOW Authors


Publication Date


  • 2013

Published In


Citation


  • Li, H. J., Jiang, Z. Y. & Wei, D. B. (2013). Study on effect of strain rate on 3D surface asperity flattening in uniaxial planar compression by crystal plasticity finite element modelling. Wear, 301 (1-2), 11-18.

Scopus Eid


  • 2-s2.0-84879143858

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1064/

Number Of Pages


  • 7

Start Page


  • 11

End Page


  • 18

Volume


  • 301

Issue


  • 1-2

Abstract


  • As an important parameter of surface quality for metal manufacturing products, surface roughness is

    affected by the following parameters: original roughness, friction, grain size, grain orientation, stress–

    strain state, and work hardening. Previously, effects of friction and gauged reduction and wavelength

    on surface roughness have already been studied by a 2D surface asperity model in uniaxial planar

    compression. On the basis of previous results, a 3D surface asperity model is developed by employing

    rate-dependent crystal plasticity constitutive model in finite element software ABAQUS. Results from

    electron back scatter diffraction(EBSD) and atomic force microscope(AFM) experiments have also been

    input into the 3D model. Influences of strain rate and texture have been discussed in this paper. The

    calculated results show a good agreement with experimental results. With an increase of reduction, the

    surface asperity flattening under a lower strain rate tends to accelerate; grain size and roughness

    decrease while hardness and stress increase. Under the same reduction, surface roughness with higher

    strain rate 0.01 s1 has a larger flattening rate (lower roughness Ra) than that of surface roughness with

    lower strain rate 0.001 s1. In this study, increased strain rate has no obvious effect on texture.

UOW Authors


Publication Date


  • 2013

Published In


Citation


  • Li, H. J., Jiang, Z. Y. & Wei, D. B. (2013). Study on effect of strain rate on 3D surface asperity flattening in uniaxial planar compression by crystal plasticity finite element modelling. Wear, 301 (1-2), 11-18.

Scopus Eid


  • 2-s2.0-84879143858

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1064/

Number Of Pages


  • 7

Start Page


  • 11

End Page


  • 18

Volume


  • 301

Issue


  • 1-2