Analytical and finite element solution for continuous contact problem of two functionally graded layers


Üstün A., Çömez İ., Özşahin T. Ş.

ZAMM ZEITSCHRIFT FÜR ANGEWANDTE MATHEMATIK UND MECHANIK, cilt.105, sa.12, ss.1-25, 2025 (SCI-Expanded, Scopus)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 105 Sayı: 12
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1002/zamm.70295
  • Dergi Adı: ZAMM ZEITSCHRIFT FÜR ANGEWANDTE MATHEMATIK UND MECHANIK
  • Derginin Tarandığı İndeksler: Scopus, Science Citation Index Expanded (SCI-EXPANDED), Compendex, INSPEC, MathSciNet, zbMATH
  • Sayfa Sayıları: ss.1-25
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

In this study, the contact problem of a functionally graded bilayer loaded by two rigid flat blocks has been investigated according to the theory of elasticity. Concentrated loads are transferred to the layers via rigid blocks. Body forces are taken into account and all surfaces are assumed to be frictionless. Stress and displacement expressions of the FG layers have been obtained with the Fourier integral transforms. When boundary conditions are applied for the continuous contact problem, the problem reduces to a system of two singular integral equations where the contact stresses are unknown. The numerical solution of the integral equations has been made by the Gauss-Chebyshev integration method and the unknown contact stresses have been obtained. The effect of the material properties and geometrical parameters on the contact stress under the blocks, the initial separation load and initial separation distances have been obtained. The results obtained from the analytical solution have been compared with a study in the literature. In addition, the numerical solution of the problem is carried out with the help of ANSYS program based on the finite element method and compared with the analytical results.