Thermal and mechanical stresses in transversely isotropic coatings

Three-dimensional sliding contact and thermal contact stress analysis of tr ansversely isotropic coatings on isotropic or transversely isotropic substr ate is presented. Fourier transforms are used to obtain solutions for tempe rature rise and stresses. The solutions are illustrated with temperature ri se and stresses in a single layered half-space induced by moving Hertz pres sure. The effects of coating thickness, friction coefficient and Peclet num ber (dimensionless heat source velocity) on temperature rise and stresses i n coated bodies are discussed. It is found that the effect of the isotropy parameter of coating (ratio of lateral thermal conductivity to normal therm al conductivity) on dimensionless surface temperature rise is not significa nt at higher Peclet numbers. It is also found that frictional heating can l ower the maximum surface tensile stress. In low friction contacts, the ther mal effects on Von Mises stress in the coating and the substrate are not pa rticularly significant. (C) 2001 Published by Elsevier Science B.V. All rig hts reserved.