Academic Journal
Curvature–Interference Coupling Effect on Interlaminar Stress and Delamination Tendency in Riveted CFRP Laminates.
| Title: | Curvature–Interference Coupling Effect on Interlaminar Stress and Delamination Tendency in Riveted CFRP Laminates. |
|---|---|
| Authors: | Wang, Tai, Zheng, Weiling, Lu, Konghan, Li, Yang, Qian, Chunhua, Li, Jianfeng, Zhang, Zhongchao, Xu, Huibin, Wang, Guangqiu |
| Source: | Polymers (20734360); Sep2026, Vol. 18 Issue 17, p2075, 21p |
| Subject Terms: | Curvature, Riveted joints, Shearing force, Laminated materials, Fracture mechanics, Airframes, Finite element method, Composite materials |
| Abstract: | Carbon fiber-reinforced polymer (CFRP) composites are widely used in curved aerospace structures, where riveting-induced interlaminar damage is a critical concern. Most existing studies have focused on flat laminates, while the influence of structural curvature on rivet load transfer and delamination tendency remains insufficiently understood. This study develops a three-dimensional finite element model in ANSYS Workbench to investigate the curvature–interference coupling effect on CFRP/Al single-lap riveted joints. Four curvature configurations with identical arc lengths (C0, C45, C90, and C180) are established, and riveting is simulated with upsetting displacements of 1.5–3.0 mm. Results show that curvature shifts the contact pressure from an axisymmetric pattern to a localized distribution on the convex side, while the deformation mode transitions from isotropic expansion to hoop-dominated behavior. The equivalent interlaminar shear stress increases nonlinearly with curvature and displacement. At 3.0 mm, the peak stress in C180 reaches 415.9 MPa, 1.86 times that of the flat laminate. Further analysis reveals that curvature induces membrane-bending coupling, which amplifies ply deformation incompatibility and increases delamination tendency. These findings indicate that riveting parameters developed for flat laminates cannot be directly transferred to curved structures, and curvature–interference coupling should be considered in damage-tolerant design. [ABSTRACT FROM AUTHOR] |
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| Database: | Complementary Index |
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| Header | DbId: edb DbLabel: Complementary Index An: 197043950 RelevancyScore: 1082 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 1082.42749023438 |
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| Items | – Name: Title Label: Title Group: Ti Data: Curvature–Interference Coupling Effect on Interlaminar Stress and Delamination Tendency in Riveted CFRP Laminates. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Wang%2C+Tai%22">Wang, Tai</searchLink><br /><searchLink fieldCode="AR" term="%22Zheng%2C+Weiling%22">Zheng, Weiling</searchLink><br /><searchLink fieldCode="AR" term="%22Lu%2C+Konghan%22">Lu, Konghan</searchLink><br /><searchLink fieldCode="AR" term="%22Li%2C+Yang%22">Li, Yang</searchLink><br /><searchLink fieldCode="AR" term="%22Qian%2C+Chunhua%22">Qian, Chunhua</searchLink><br /><searchLink fieldCode="AR" term="%22Li%2C+Jianfeng%22">Li, Jianfeng</searchLink><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Zhongchao%22">Zhang, Zhongchao</searchLink><br /><searchLink fieldCode="AR" term="%22Xu%2C+Huibin%22">Xu, Huibin</searchLink><br /><searchLink fieldCode="AR" term="%22Wang%2C+Guangqiu%22">Wang, Guangqiu</searchLink> – Name: TitleSource Label: Source Group: Src Data: Polymers (20734360); Sep2026, Vol. 18 Issue 17, p2075, 21p – Name: Subject Label: Subject Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Curvature%22">Curvature</searchLink><br /><searchLink fieldCode="DE" term="%22Riveted+joints%22">Riveted joints</searchLink><br /><searchLink fieldCode="DE" term="%22Shearing+force%22">Shearing force</searchLink><br /><searchLink fieldCode="DE" term="%22Laminated+materials%22">Laminated materials</searchLink><br /><searchLink fieldCode="DE" term="%22Fracture+mechanics%22">Fracture mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Airframes%22">Airframes</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+materials%22">Composite materials</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Carbon fiber-reinforced polymer (CFRP) composites are widely used in curved aerospace structures, where riveting-induced interlaminar damage is a critical concern. Most existing studies have focused on flat laminates, while the influence of structural curvature on rivet load transfer and delamination tendency remains insufficiently understood. This study develops a three-dimensional finite element model in ANSYS Workbench to investigate the curvature–interference coupling effect on CFRP/Al single-lap riveted joints. Four curvature configurations with identical arc lengths (C0, C45, C90, and C180) are established, and riveting is simulated with upsetting displacements of 1.5–3.0 mm. Results show that curvature shifts the contact pressure from an axisymmetric pattern to a localized distribution on the convex side, while the deformation mode transitions from isotropic expansion to hoop-dominated behavior. The equivalent interlaminar shear stress increases nonlinearly with curvature and displacement. At 3.0 mm, the peak stress in C180 reaches 415.9 MPa, 1.86 times that of the flat laminate. Further analysis reveals that curvature induces membrane-bending coupling, which amplifies ply deformation incompatibility and increases delamination tendency. These findings indicate that riveting parameters developed for flat laminates cannot be directly transferred to curved structures, and curvature–interference coupling should be considered in damage-tolerant design. [ABSTRACT FROM AUTHOR] – Name: Abstract Label: Group: Ab Data: <i>Copyright of Polymers (20734360) is the property of MDPI 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.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/polym18172075 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 21 StartPage: 2075 Subjects: – SubjectFull: Curvature Type: general – SubjectFull: Riveted joints Type: general – SubjectFull: Shearing force Type: general – SubjectFull: Laminated materials Type: general – SubjectFull: Fracture mechanics Type: general – SubjectFull: Airframes Type: general – SubjectFull: Finite element method Type: general – SubjectFull: Composite materials Type: general Titles: – TitleFull: Curvature–Interference Coupling Effect on Interlaminar Stress and Delamination Tendency in Riveted CFRP Laminates. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Wang, Tai – PersonEntity: Name: NameFull: Zheng, Weiling – PersonEntity: Name: NameFull: Lu, Konghan – PersonEntity: Name: NameFull: Li, Yang – PersonEntity: Name: NameFull: Qian, Chunhua – PersonEntity: Name: NameFull: Li, Jianfeng – PersonEntity: Name: NameFull: Zhang, Zhongchao – PersonEntity: Name: NameFull: Xu, Huibin – PersonEntity: Name: NameFull: Wang, Guangqiu IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: Sep2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 20734360 Numbering: – Type: volume Value: 18 – Type: issue Value: 17 Titles: – TitleFull: Polymers (20734360) Type: main |
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