An analytical study of contact mechanics in layered orthotropic-isotropic media with functional grading

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dc.contributor.authorOner, Erdal
dc.contributor.authorArtar, Pinar Tugce
dc.date.accessioned2026-02-28T12:17:56Z
dc.date.available2026-02-28T12:17:56Z
dc.date.issued2025
dc.departmentBayburt Üniversitesi
dc.description.abstractContact mechanics has played a central role in engineering progressing from early practices in ancient civilizations to the pioneering experimental studies of early scientists and more recently to advanced computational approaches. In modern research, functionally graded materials have gained increasing attention as their continuously varying properties enable the tailoring of stress fields, improvement of resistance to thermal and mechanical loads, and enhancement of the performance and reliability of layered systems.This study addresses the continuous contact problem of a two-layered medium composed of a functionally graded orthotropic layer (FGOL) placed over a functionally graded isotropic layer (FGIL). A rigid cylindrical punch applies a static concentrated load on the FGOL, while the lower surface of the FGIL is bonded to a rigid foundation. The layers are assumed to be unbonded at their interface, and frictionless contact conditions are imposed. To capture the effect of anisotropy, actual orthotropic materials are employed in the FGOL. An exponential through-thickness variation is adopted for the FGOL stiffness coefficients and density, and for the FGIL shear modulus and density. Under plane strain conditions, the contact formulation is reduced to a singular integral equation by applying the relevant boundary conditions. The equation is solved numerically using Gauss-Chebyshev integration techniques. The results provide detailed evaluations of contact lengths, stress distributions, critical load factors, and initial separation points as functions of selected nondimensionalized parameters and different orthotropic material choices, thereby contributing to a deeper understanding of the mechanics of graded layered systems.
dc.identifier.doi10.1080/15397734.2025.2602670
dc.identifier.issn1539-7734
dc.identifier.issn1539-7742
dc.identifier.scopus2-s2.0-105025772341
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1080/15397734.2025.2602670
dc.identifier.urihttps://hdl.handle.net/20.500.12403/6039
dc.identifier.wosWOS:001645595900001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherTaylor & Francis Inc
dc.relation.ispartofMechanics Based Design of Structures And Machines
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20260218
dc.subjectContact mechanics analysis
dc.subjectGauss-Chebyshev integration
dc.subjectfunctionally graded materials (FGMs)
dc.subjectbody force effects
dc.subjectcritical load factor
dc.subjectinitial separation point
dc.titleAn analytical study of contact mechanics in layered orthotropic-isotropic media with functional grading
dc.typeArticle

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