A crystal plasticity model for sliding frictional thermal contact of gradient nanostructures.
Saved in:
| Title: | A crystal plasticity model for sliding frictional thermal contact of gradient nanostructures. |
|---|---|
| Authors: | Zhou, Jia-Lin1 (AUTHOR), Shen, Fei1,2,3 (AUTHOR) shenfei@tju.edu.cn, Zhang, Zheng1 (AUTHOR), Huang, Gan-Yun1 (AUTHOR), El-Borgi, Sami4 (AUTHOR), Ke, Liao-Liang1,3 (AUTHOR) llke@tju.edu.cn |
| Source: | Acta Mechanica. May2026, Vol. 237 Issue 5, p2259-2286. 28p. |
| Subjects: | Dislocation density, Nanostructures, Sliding friction, Heat conduction, Computer simulation, Grain size, Mechanical loads |
| Abstract: | The objective of this work is to investigate the thermomechanical response of gradient nanostructures (GNS) under sliding frictional contact using a crystal plasticity model incorporating dislocation density evolution. The variation in grain size along the depth direction of GNS is considered, and its effect on the mechanical response is assessed. The influence of frictional heat-induced temperature rise on the dislocation density and critical resolved shear stress is included in the formulation. A homogenization approach is adopted to link the microscale characteristics of the structure to the macroscopic response during contact. Material parameters are calibrated using uniaxial tensile and nanoindentation experimental data. Comparative simulations are performed for homogeneous grain structures (HGS) and GNS, and the influences of grain size gradient, heat generation, gradient form, and friction coefficient on the thermomechanical fields are analyzed. The results indicate that GNS exhibit lower contact tensile stress, reduced plastic strain accumulation, and a slower rate of dislocation density evolution compared to HGS. These findings support the effectiveness of GNS in enhancing surface performance and mitigating contact-induced damage. [ABSTRACT FROM AUTHOR] |
| Copyright of Acta Mechanica is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 193713631 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: A crystal plasticity model for sliding frictional thermal contact of gradient nanostructures. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zhou%2C+Jia-Lin%22">Zhou, Jia-Lin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shen%2C+Fei%22">Shen, Fei</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> shenfei@tju.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Zheng%22">Zhang, Zheng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Huang%2C+Gan-Yun%22">Huang, Gan-Yun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22El-Borgi%2C+Sami%22">El-Borgi, Sami</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ke%2C+Liao-Liang%22">Ke, Liao-Liang</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> llke@tju.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Acta+Mechanica%22">Acta Mechanica</searchLink>. May2026, Vol. 237 Issue 5, p2259-2286. 28p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Dislocation+density%22">Dislocation density</searchLink><br /><searchLink fieldCode="DE" term="%22Nanostructures%22">Nanostructures</searchLink><br /><searchLink fieldCode="DE" term="%22Sliding+friction%22">Sliding friction</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+conduction%22">Heat conduction</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br /><searchLink fieldCode="DE" term="%22Grain+size%22">Grain size</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+loads%22">Mechanical loads</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The objective of this work is to investigate the thermomechanical response of gradient nanostructures (GNS) under sliding frictional contact using a crystal plasticity model incorporating dislocation density evolution. The variation in grain size along the depth direction of GNS is considered, and its effect on the mechanical response is assessed. The influence of frictional heat-induced temperature rise on the dislocation density and critical resolved shear stress is included in the formulation. A homogenization approach is adopted to link the microscale characteristics of the structure to the macroscopic response during contact. Material parameters are calibrated using uniaxial tensile and nanoindentation experimental data. Comparative simulations are performed for homogeneous grain structures (HGS) and GNS, and the influences of grain size gradient, heat generation, gradient form, and friction coefficient on the thermomechanical fields are analyzed. The results indicate that GNS exhibit lower contact tensile stress, reduced plastic strain accumulation, and a slower rate of dislocation density evolution compared to HGS. These findings support the effectiveness of GNS in enhancing surface performance and mitigating contact-induced damage. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Acta Mechanica is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=193713631 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s00707-025-04599-w Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 28 StartPage: 2259 Subjects: – SubjectFull: Dislocation density Type: general – SubjectFull: Nanostructures Type: general – SubjectFull: Sliding friction Type: general – SubjectFull: Heat conduction Type: general – SubjectFull: Computer simulation Type: general – SubjectFull: Grain size Type: general – SubjectFull: Mechanical loads Type: general Titles: – TitleFull: A crystal plasticity model for sliding frictional thermal contact of gradient nanostructures. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zhou, Jia-Lin – PersonEntity: Name: NameFull: Shen, Fei – PersonEntity: Name: NameFull: Zhang, Zheng – PersonEntity: Name: NameFull: Huang, Gan-Yun – PersonEntity: Name: NameFull: El-Borgi, Sami – PersonEntity: Name: NameFull: Ke, Liao-Liang IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 00015970 Numbering: – Type: volume Value: 237 – Type: issue Value: 5 Titles: – TitleFull: Acta Mechanica Type: main |
| ResultId | 1 |
