-The problem of a thermally conducting cylinder sliding steadily over the surface of an elastic half-plane with different thermal properties was analyzed. Appropriate Green's functions are used to reduce the problem to an integral equation which is solved numerically. Thermoelastic distortion due to frictional heating causes the contact patch to be smaller than that predicted for isothermal (He...

ABSTRACT: In this paper, shakedown limits of non-homogeneous soils in a half-space under rolling and sliding surface loads are investigated. The inhomogeneity of the soil is described by a power law for the variation of Young’s modulus with the depth. Mohr-Coulomb criterion is employed to characterise the cohesive-frictional behaviour of the soil. Analytical solutions to the elastic stress fiel...

Breather propagation in a damped oscillatory chain with Hertzian nearest-neighbour coupling is investigated. The breather exhibits an unusual two-stage pattern. first stage characterized by power-law decay of the amplitude. This extends over finite number sites. Drastic drop amplitude towards end this fragment referred to as arrest. At second stage, very small amplitudes hyper-exponential decay...

A new concept of an impact actuated micro shift valve is presented. The impacts are transmitted to the interior of the valve through the casing. In order to predict the energy transmitted into the valve, the most important effects are discussed and two elastic multibody models using the Hertzian contact law are introduced and compared to a full finite element simulation. A simpler model with on...

We consider the effect of an elastic modulus that decreases with depth on the load-displacement relation for indentation of a graded half space by a rigid indenter. A closed-form approximation incorporating features of the plate on an elastic substrate and the Hertzian contact theory is compared with finite element results for the case of a uniform stiff layer on a homogeneous substrate. Some g...

A semianalytical model is introduced to assess rolling contact fatigue problems in railway applications. The constitutive law based on the nonlinear kinematic and isotropic hardening of Chaboche–Lemaitre, which allows cyclic elastoplastic strain under surface be evaluated. much higher computational effectiveness comparison with finite element (FE) analyses quantified. Dang Van multiaxial criter...

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