RESEARCH ON CRYSTAL PLASTICITY CONSTITUTIVE MODEL CONSIDERING THE STRAIN SOFTENING EFFECT OF ULTRA-FINE GRAIN METAL MATERIALS
In order to study the strain softening phenomenon of ultra-fine grain (UFG) metal materials under uniaxial tensile loading, a modified model considering the effect of residual internal stress was proposed based on the classical crystal plasticity constitutive model, and the specific form of residual...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2025-08-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2025.08.013 |
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| _version_ | 1849227152970481664 |
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| author | ZHENG Zhanguang FAN Jianan SUN Teng XIE Changji HUANG Zeng |
| author_facet | ZHENG Zhanguang FAN Jianan SUN Teng XIE Changji HUANG Zeng |
| author_sort | ZHENG Zhanguang |
| collection | DOAJ |
| description | In order to study the strain softening phenomenon of ultra-fine grain (UFG) metal materials under uniaxial tensile loading, a modified model considering the effect of residual internal stress was proposed based on the classical crystal plasticity constitutive model, and the specific form of residual internal stress and its evolution were programmed into the user subroutine. The uniaxial tensile test data were fitted to verify the validity of the model, and the finite element simulation results of crystal plasticity were compared with and without the residual internal stress. The results show that the simulation results obtained by using the modified crystal plasticity constitutive model are in good agreement with the experimental results, indicating that the modified crystal plasticity constitutive model can effectively capture the strain-softening phenomenon of UFG metal materials, and the simulation results show different properties under the two conditions whether the residual internal stress is taken into account. It is reasonable to explain the strain softening phenomenon of UFG metal materials from the perspective of the formation and action of residual internal stress. |
| format | Article |
| id | doaj-art-60e8993824944806be2962dc82daeceb |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2025-08-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-60e8993824944806be2962dc82daeceb2025-08-23T19:00:18ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692025-08-0147108114122985147RESEARCH ON CRYSTAL PLASTICITY CONSTITUTIVE MODEL CONSIDERING THE STRAIN SOFTENING EFFECT OF ULTRA-FINE GRAIN METAL MATERIALSZHENG ZhanguangFAN JiananSUN TengXIE ChangjiHUANG ZengIn order to study the strain softening phenomenon of ultra-fine grain (UFG) metal materials under uniaxial tensile loading, a modified model considering the effect of residual internal stress was proposed based on the classical crystal plasticity constitutive model, and the specific form of residual internal stress and its evolution were programmed into the user subroutine. The uniaxial tensile test data were fitted to verify the validity of the model, and the finite element simulation results of crystal plasticity were compared with and without the residual internal stress. The results show that the simulation results obtained by using the modified crystal plasticity constitutive model are in good agreement with the experimental results, indicating that the modified crystal plasticity constitutive model can effectively capture the strain-softening phenomenon of UFG metal materials, and the simulation results show different properties under the two conditions whether the residual internal stress is taken into account. It is reasonable to explain the strain softening phenomenon of UFG metal materials from the perspective of the formation and action of residual internal stress.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2025.08.013Ultra-fine grain metal materialsCrystal plasticity constitutive modelUniaxial tensionStrain softening effectResidual internal stress |
| spellingShingle | ZHENG Zhanguang FAN Jianan SUN Teng XIE Changji HUANG Zeng RESEARCH ON CRYSTAL PLASTICITY CONSTITUTIVE MODEL CONSIDERING THE STRAIN SOFTENING EFFECT OF ULTRA-FINE GRAIN METAL MATERIALS Jixie qiangdu Ultra-fine grain metal materials Crystal plasticity constitutive model Uniaxial tension Strain softening effect Residual internal stress |
| title | RESEARCH ON CRYSTAL PLASTICITY CONSTITUTIVE MODEL CONSIDERING THE STRAIN SOFTENING EFFECT OF ULTRA-FINE GRAIN METAL MATERIALS |
| title_full | RESEARCH ON CRYSTAL PLASTICITY CONSTITUTIVE MODEL CONSIDERING THE STRAIN SOFTENING EFFECT OF ULTRA-FINE GRAIN METAL MATERIALS |
| title_fullStr | RESEARCH ON CRYSTAL PLASTICITY CONSTITUTIVE MODEL CONSIDERING THE STRAIN SOFTENING EFFECT OF ULTRA-FINE GRAIN METAL MATERIALS |
| title_full_unstemmed | RESEARCH ON CRYSTAL PLASTICITY CONSTITUTIVE MODEL CONSIDERING THE STRAIN SOFTENING EFFECT OF ULTRA-FINE GRAIN METAL MATERIALS |
| title_short | RESEARCH ON CRYSTAL PLASTICITY CONSTITUTIVE MODEL CONSIDERING THE STRAIN SOFTENING EFFECT OF ULTRA-FINE GRAIN METAL MATERIALS |
| title_sort | research on crystal plasticity constitutive model considering the strain softening effect of ultra fine grain metal materials |
| topic | Ultra-fine grain metal materials Crystal plasticity constitutive model Uniaxial tension Strain softening effect Residual internal stress |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2025.08.013 |
| work_keys_str_mv | AT zhengzhanguang researchoncrystalplasticityconstitutivemodelconsideringthestrainsofteningeffectofultrafinegrainmetalmaterials AT fanjianan researchoncrystalplasticityconstitutivemodelconsideringthestrainsofteningeffectofultrafinegrainmetalmaterials AT sunteng researchoncrystalplasticityconstitutivemodelconsideringthestrainsofteningeffectofultrafinegrainmetalmaterials AT xiechangji researchoncrystalplasticityconstitutivemodelconsideringthestrainsofteningeffectofultrafinegrainmetalmaterials AT huangzeng researchoncrystalplasticityconstitutivemodelconsideringthestrainsofteningeffectofultrafinegrainmetalmaterials |