When a railway vehicle moves on curved rail, sliding contact between the rail head side and wheel flange causes wear flange. Traditionally, with thinned is machined to get minimum thickness specified for structural safety. This operation reduces rim shortens life of wheel. In present study, flanges were hard-faced by submerged arc welding. A welding wire, which has good weldability base materia...

Investigation of vertical vibrations of a railway turnout is important in designing track components under moving loads of trains. In this paper, the turnout is simulated by a linear finite element model with modal damping. A section of the turnout has a length of 36 sleeper spans surrounding the crossing. Rails and sleepers are modeled with uniform Rayleigh-&#10Timoshenko beam elements. The ra...

Abstract The research examines the sources of rail transport noise. Noise depends on type locomotives, warning signals, maintenance, and construction equipment. wheel–to–rail contact rolling stock locomotives’ propulsion systems are noise sources. Static dynamic loads have intensities that depend masses speeds trainsets. In addition, static, stock, thermal loads, action rainwater stress ballast...

A description of a new design vibrating machine for strengthening the surface plastic deformation cylindrical long parts, in particular stabilizers wheeled carriages railway cars, is given. The main and technological parameters process vibration – centrifugal these parts are outlined. influence this hardening on such basic indicator processing as depth experimentally investigated samples from 4...

To assess the wear of hot stamping tool, a model punch deformation under influence thermal and mechanical loads was developed. The shape relative position die were designed to localize maximum contact at predetermined location. It assumed that is caused by removal surface metal layer, due decreasing its strength during plastic deformation. Simulation performed finite element method in Deform so...

Cycimns were originally defined as proteins which are synthesized in each cell cycle and destroyed at every mitosis. Cyclins were discovered by T. Hunt and students at the Marine Biological Laboratory, Woods Hole, MA, duningthe 1982 Physiology Course (1). They labeled eggs ofthe sea urchin Arbacia punctulata with [35S]methionine after fertilization and analyzed the temporal pattern of protein s...

Construction projects become complicated and fragmented so that many specialty contractors are involved. In such changed environments, a general contractor’s overhead costs are increasing comparable to direct costs. In addition to an increase of volume, activities consisting of overhead costs play an important role in coordinating different participants who include different specialty contracto...