Hunting is a potentially dangerous phenomenon related to the lateral oscillation of wheels that impacts rails and causes wear infrastructure’s components. Therefore, analysis timely detection hunting can lead application corrective maintenance tasks, reducing damages, costs even derailments as result. In this work, vibration response finite element model rail with hunting-induced loads by singl...

Gear’s normal contact stiffness played an important role in the mechanical equipment. In this paper, the M-B fractal model is modified and the contact surface coefficient is put forward to set up the fractal model, considering the influence of friction, which could be used to calculate accurately the involute arc cylindrical gears’ normal contact stiffness based on the fractal theory and Hertz ...


 The purpose of this article is to demonstrate how the Wittgenstein Tractatus deals with themes related laws nature, as well metatheoretical principles science. More specifically, our intention expose notions scientific representation linked such those causality and induction. As a starting point, we propose that notion non-precedence one theory over another Hertzian inspiration, which ar...

Slewing bearings are critical components of rotating equipment. Large structure sizes and heavy working load conditions require an extremely high load-bearing capacity reliability. Overall local contact finite element models slewing verified by the empirical formula Hertz theory. Validated used to analyse influence elastic material (E 1) elastoplastic parameters (EP 1, EP 2 3) on carrying capac...

Perturbation theory of rotating black holes is usually described in terms of Weyl scalars c4 and c0, which each satisfy Teukolsky’s complex master wave equation and respectively represent outgoing and ingoing radiation. On the other hand metric perturbations of a Kerr hole can be described in terms of ~Hertz-like! potentials C in outgoing or ingoing radiation gauges. In this paper we relate the...