Railway systems require improvements of bogies performances, in terms of dynamics and comfort, while maintaining at reasonable low-level track forces, stresses and wear. These performances need to be granted with the mileage progressing. Wheel/rail geometry is the main parameter influencing track forces and vehicle's dynamics. The wear of railway wheel is then a topic of major interest to research community and industry. Currently there is no general method for predicting wear in railway wheels.
The development of a reliable predictive and modelling tool is a primary target. Focus of AWARE research is the evolution of wheel geometry, due to wear and material flow, which depends from creep coefficients and forces and from their distribution and occurrence as well as from material mechanics and microstructure in deformed condition.
AWARE main objective is to drastically improve the knowledge of wear prediction of wheel profiles through:
- Accurate dynamic simulation of contact geometry and friction phenomena
- Wear mechanisms of wheel profiles, on the basis of materials' structure
- Reconstruction of the evolution of wheel profiles
Further objective is to obtain an integrated approach for wheel design and maintenance so as to double the life of wheel profile including:
- Simple measuring devices
- Integrated wheel/rail re-profiling actions
- Optimal lubrication
The results of dynamic simulation and the evolution of wheel profile will be validated through dedicated test and measuring campaigns on representative railway's vehicles in representative mission profiles. AWARE objectives will be achieved through a programme of personnel exchange between Alstom Ferroviarria (Italy) as main Host Unit, and 3 complementary Universities in: Chalmers (Sweden), Sheffield (UK) and Zilina (Slovakia). AWARE will reinforce the industry / academy relationships on the long term by providing guidance for future research activity based on industrial vision.
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