Due to the large size and complicated features, brake discs of high-speed trains are difficult forge, so a reasonable design process die parameter prerequisites for successful forming. The flow stress 23CrNiMoV, forged-steel disc material trains, was investigated by uniaxial compression experiment on Gleeble 1500 test machine. Based obtained flow-stress data, series numerical simulation analyse...

Ventilated brake discs are used in high speed automobiles. The brake disc is an important component in the braking system which is expected to withstand and dissipate the heat generated during the braking event. In the present work, an attempt is made to study the effect of vane-shape rotor on the flow-field and heat transfer characteristics for different configurations of vanes for different r...

Safety aspect in automotive engineering has been considered as a number one priority in development of new vehicle. Each single system has been studied and developed in order to meet safety requirement. Instead of having air bag, good suspension systems, good handling and safe cornering, there is one most critical system in the vehicle which is brake systems. The objective of this work is to in...

Disc brakes wear during braking events and release airborne particulates. These particle emissions are currently one of the highest contributors to non-exhaust introduce health hazards as well environmental contamination. To reduce this problem, corrosion-resistant disc coatings have been implemented on grey cast iron brake rotors by using various deposition techniques such thermal spraying ove...

Abstract The application of electric vehicles leads to a change in the principle operation and functioning some systems vehicle, which also lead concept vehicle itself. One those that has new concept, differs from powered by IC engines, is braking system. previous function system was stop i.e. reduce speed safe way. In case vehicles, friction brakes were retained, with addition regenerative rol...

This paper deals with the interaction between a moving wheelset and a slab track due to the shortpitch corrugated rail. The wheelset is modeled using a free-free Timoshenko beam with attached rigid bodies as the axle boxes, wheels and brake discs. The slab track model consists of elastically supported double EulerBernoulli beams. In fact, both wheelset and slab track are symmetric structures an...

We construct models for the rotation rates of T Tauri stars whose spin is regulated by magnetic linkage between the star and a surrounding accretion disc. Our models utilise a time-dependent disc code to follow the accretion process and include the eeects of pre-main-sequence stellar evolution. We nd that the initial disc mass controls the evolution of the star-disc system. For suuciently massi...

Abstract Automotive brake rotors are commonly made from gray cast iron (GCI). During usage, gradually worn off and periodically replaced. Currently, replaced mostly remelted to produce brand-new products, resulting in a relatively high energy consumption carbon footprint into the environment. In addition, automotive brakes emit airborne particles. Some of emitted particles categorized as ultraf...