Moving Contact Problem of an Unbonded Layer in the Presence of Body Force

ÇÖMEZ İ.

IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY-TRANSACTIONS OF MECHANICAL ENGINEERING, cilt.46, sa.4, ss.927-942, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 46 Sayı: 4
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1007/s40997-021-00464-y
  • Dergi Adı: IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY-TRANSACTIONS OF MECHANICAL ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, ABI/INFORM, Aerospace Database, INSPEC, Metadex
  • Sayfa Sayıları: ss.927-942
  • Anahtar Kelimeler: Contact problem, Continuous contact, Discontinuous contact, Body force, Separation, Singular integral equation, Fourier transforms, FUNCTIONALLY GRADED LAYER, AXISYMMETRICAL FRICTIONLESS CONTACT, RECEDING CONTACT, ELASTIC LAYER, PLANE PROBLEM, RIGID PUNCH, SUBSTRATE, MECHANICS, BEHAVIOR, STAMP
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

In this study, moving continuous and discontinuous contact problems of a layer were examined in the presence of body force. The unbonded layer was pressed to a rigid foundation by a rigid cylindrical punch that moved over the layer steadily. In the presence of body force, for the moving contact problem, the general stress and displacement expressions were derived using the theory of elasticity and Fourier integral transforms, without using the superposition technique. Through applying the boundary conditions of the problem, the singular integral equations in which the contact stresses and contact areas were unknown were obtained for both the continuous and discontinuous contact cases. The singular integral equations were solved numerically using the Gauss-Chebyshev integration formula. Numerical results for critical load, initial separation distance, the separation region, contact stress distributions under the punch and between the layer, and foundation were given for various dimensionless quantities.