Mechanics of dynamic contact of coated substrate and rigid cylindrical ended punch

Balci M. N., DAĞ S.

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, cilt.33, sa.5, ss.2225-2240, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 33 Sayı: 5
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1007/s12206-019-0425-8
  • Dergi Adı: JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2225-2240
  • Anahtar Kelimeler: Dynamic contact mechanics, Isotropic elastic coating, Cylindrical ended punch, Singular integral equation, Contact stresses, FINITE-ELEMENT-ANALYSIS, COATING-SUBSTRATE, STRESS, INDENTATION, BEHAVIOR
  • Hacettepe Üniversitesi Adresli: Evet

Özet

The dynamic contact mechanics of isotropic elastic coating bonded to homogeneous substrate was examined. The coating is indented by a sliding rigid punch of a cylindrical profile. The rigid punch moves over the coating at a steady subsonic speed. To determine contact stresses, an analytical method based on the singular integral equation technique is put forward. Governing partial differential equations are derived considering general theory of elastodynamics. The influences of dimensionless punch speed, mass density ratio, shear modulus, coefficient of friction, relative coating thickness and Poisson's ratio on contact stresses and contact related parameters were found. Comparison of the contact stresses computed by elastodynamic and elastostatic theories clearly shows that the relative difference between these two results is quite remarkable. Hence, in sliding contact problems incorporating punches with relatively high speed, elastodynamic theory is required to find more realizable stress results.