Reduction of Accelerations and Forces
Optimized turnout geometrie
Rail vehicles consist of various masses ("bodies"), which are linked by joints of different degrees of freedom and influenced by springs and dampers. When vehicles are in motion, these masses are interactive, a phenomenon known as multi-body dynamics.
voetalpine VAE use a multi-body simulation programme which calculates the passage over turnouts of complete rail vehicles taking into account all influencing factors like vehicle data, speed, line layout, different wheel profiles and varying rail sections in the switchblade area. Every movement sequence can be calculated and the effect on the track (wheel/rail) can be determined.
Thus arising forces, accelerations, displacements and other values can be calculated in advance.
The results of these calculations are checked and validated in experiments (field tests and measured runs).
By varying the turnout parameter optimized geometries with asymmetrical clothoids were developed and patented.
Long testing cycles can be minimized by this process.
the ideal turnout can be designed with an optimization process developed by voestalpine VAE. The variation of turnout parameter results in the use of asymmetrical clothoids.
With KGO (kinematic gauge optimization), defined gauge adjustments in the switch area stabilize the natural sine run of the wheel set and thus reduce wear.
In particular, voestlpine VAE's high-speed turnouts have, therefore, an optimized geometry and optimum wheel/rail transition conditions.
Delta Kappa Procedure: special geometrical form of the rail head, adjusted to the wheel profile. Constant curvature difference at different wheel positions as a function of the component width.
