Study of micro flexible rolling based on grained inhomogeneity. (April 2017)
- Record Type:
- Journal Article
- Title:
- Study of micro flexible rolling based on grained inhomogeneity. (April 2017)
- Main Title:
- Study of micro flexible rolling based on grained inhomogeneity
- Authors:
- Qu, Feijun
Jiang, Zhengyi
Wei, Dongbin
Chen, Qingqiang
Lu, Haina - Abstract:
- Abstract: This paper shows an analytical, numerical and experimental investigation to comprehend the role of grained inhomogeneity which plays in micro flexible rolling in terms of the average rolling force and the thickness directional springback of the workpiece after it exits the roll bite zone. Miniature tensile tests and micro hardness tests are accomplished to identify the scattered stress-strain curves for 500 μm thick aluminium alloy 1060 samples with grain size of approximately 23-71 µm and to determine the weighted heterogeneity coefficient for each sample separately, according to which the theoretical calculations and numerical simulations based upon 3D Voronoi tessellation technique have been performed under actual experimental conditions where reductions of 25 to 50 % are selected. The scattering effect associated with the anisotropic nature of single grains has been perceived in the micro flexible rolling process and both the analytical and finite element models developed have been validated via experimental data to hold promise for predicting the rolling force and the thickness directional springback of the workpiece, as well as boosting the thickness profile control performance of the micro flexible rolling mill. Graphical abstract: Highlights: 2D models are created for flexible rolling of submillimeter thick strips. Scatter effect of flow stresses of the materials is identified and expounded. 3D Voronoi tessellation is used to mimic the crystalline structureAbstract: This paper shows an analytical, numerical and experimental investigation to comprehend the role of grained inhomogeneity which plays in micro flexible rolling in terms of the average rolling force and the thickness directional springback of the workpiece after it exits the roll bite zone. Miniature tensile tests and micro hardness tests are accomplished to identify the scattered stress-strain curves for 500 μm thick aluminium alloy 1060 samples with grain size of approximately 23-71 µm and to determine the weighted heterogeneity coefficient for each sample separately, according to which the theoretical calculations and numerical simulations based upon 3D Voronoi tessellation technique have been performed under actual experimental conditions where reductions of 25 to 50 % are selected. The scattering effect associated with the anisotropic nature of single grains has been perceived in the micro flexible rolling process and both the analytical and finite element models developed have been validated via experimental data to hold promise for predicting the rolling force and the thickness directional springback of the workpiece, as well as boosting the thickness profile control performance of the micro flexible rolling mill. Graphical abstract: Highlights: 2D models are created for flexible rolling of submillimeter thick strips. Scatter effect of flow stresses of the materials is identified and expounded. 3D Voronoi tessellation is used to mimic the crystalline structure of materials. The grained heterogeneity is revealed both numerically and experimentally. The developed numerical and analytical models are validated with measured data. … (more)
- Is Part Of:
- International journal of mechanical sciences. Volume 123(2017)
- Journal:
- International journal of mechanical sciences
- Issue:
- Volume 123(2017)
- Issue Display:
- Volume 123, Issue 2017 (2017)
- Year:
- 2017
- Volume:
- 123
- Issue:
- 2017
- Issue Sort Value:
- 2017-0123-2017-0000
- Page Start:
- 324
- Page End:
- 339
- Publication Date:
- 2017-04
- Subjects:
- Micro flexible rolling -- Grained inhomogeneity -- Rolling force -- Thickness directional springback -- Weighted heterogeneity coefficient -- 3D Voronoi tessellation
Mechanical engineering -- Periodicals
Génie mécanique -- Périodiques
Mechanical engineering
Maschinenbau
Mechanik
Zeitschrift
Periodicals
621.05 - Journal URLs:
- http://www.sciencedirect.com/science/journal/00207403 ↗
http://www.elsevier.com/journals ↗ - DOI:
- 10.1016/j.ijmecsci.2017.02.009 ↗
- Languages:
- English
- ISSNs:
- 0020-7403
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 4542.344000
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 10724.xml