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dc.contributor.author | Hama, Takayuki | en |
dc.contributor.author | Yagi, Shogo | en |
dc.contributor.author | Tatsukawa, Koji | en |
dc.contributor.author | Maeda, Yasuhiro | en |
dc.contributor.author | Maeda, Yasushi | en |
dc.contributor.author | Takuda, Hirohiko | en |
dc.contributor.alternative | 濵, 孝之 | ja |
dc.contributor.alternative | 宅田, 裕彦 | ja |
dc.date.accessioned | 2021-09-15T07:00:27Z | - |
dc.date.available | 2021-09-15T07:00:27Z | - |
dc.date.issued | 2021-02 | - |
dc.identifier.uri | http://hdl.handle.net/2433/265266 | - |
dc.description.abstract | The plastic deformation behavior under various strain-path changes in an A6022-T4 Al alloy sheet was studied, focusing on the evolution of the direction of the plastic strain rate θ and the stress ratio φ after abrupt strain-path changes. A cruciform specimen was used to measure the evolution of the plastic deformation behavior after abrupt strain-path change experimentally. Before the strain-path change, the deformation was represented well by the associated flow rule with the Yld2000-2d yield function and isotropic hardening assumption. After the abrupt-path change, the deformation temporarily deviated from the associated flow rule, and it could be represented again by the associated flow rule after the plastic work increased roughly 4.0 MJ⋅m−3, which corresponded to the strain increment of approximately 0.024 under uniaxial tension in the rolling direction. The transitions of θ and φ as a function of plastic work showed that both θ and φ tend to converge to certain values regardless of the strain path if the final strain-path angles are identical. It was also found that the relationships between φ and θ temporarily deviate from the associated flow rule immediately after the abrupt-path changes because φ cannot follow the rapid change of θ. Crystal plasticity finite-element simulations reproduced the qualitative tendencies observed in the experiments, but the deviations from the associated flow rule were much more pronounced. Parametric studies showed that φ tends to converge to different values depending on the strain rate sensitivity, whereas θ tends to converge to a same value irrespective of the rate sensitivity exponent. The rate sensitivity exponent m = 0.044 gave the best fits with the experimental results in terms of the evolution of both θ and φ under an abrupt-change path, although the rate sensitivity exponent determined from macroscopic strass-strain curves were m = 0.002. | en |
dc.language.iso | eng | - |
dc.publisher | Elsevier BV | en |
dc.rights | © 2021. This manuscript version is made available under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 license | en |
dc.rights | The full-text file will be made open to the public on 1 February 2023 in accordance with publisher's 'Terms and Conditions for Self-Archiving' | en |
dc.rights | This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 | en |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | - |
dc.subject | Al alloy sheet | en |
dc.subject | Crystal plasticity finite-element method | en |
dc.subject | Biaxial tension | en |
dc.subject | Strain-path change | en |
dc.subject | Plastic flow | en |
dc.subject | Strain rate sensitivity | en |
dc.title | Evolution of plastic deformation behavior upon strain-path changes in an A6022-T4 Al alloy sheet | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.jtitle | International Journal of Plasticity | en |
dc.identifier.volume | 137 | - |
dc.relation.doi | 10.1016/j.ijplas.2020.102913 | - |
dc.textversion | author | - |
dc.identifier.artnum | 102913 | - |
dcterms.accessRights | open access | - |
datacite.date.available | 2023-02-01 | - |
datacite.awardNumber | 20H02480 | - |
datacite.awardNumber.uri | https://kaken.nii.ac.jp/ja/grant/KAKENHI-PROJECT-20H02480/ | - |
dc.identifier.pissn | 0749-6419 | - |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.awardTitle | 粗大結晶粒金属材と機械学習を用いた新規アプローチ法による結晶塑性解析の高精度化 | ja |
出現コレクション: | 学術雑誌掲載論文等 |
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