QuieterRail

Within the overall project, existing models for rolling noise, curve squeal and flange noise as well as ground‑borne vibrations will be extended so that both main lines and urban track sections can be represented realistically. In addition, virtual testing procedures will accelerate and simplify the approval of new vehicles. All results will feed into improved noise and vibration predictions, enabling operators to detect affected sections more quickly and to select appropriate mitigation strategies. An additional focus is on assessing the effectiveness and cost‑efficiency of measures over the entire asset and vehicle life cycle.

Wölfel Engineering is developing the central cloud‑based application that consolidates models and data for vibration forecasts. Where possible and available, the software automatically imports track, ground and building information from geo‑referenced (external) databases, performs hybrid calculations (with input data determined numerically, experimentally or as a combination) and provides the results as level maps and tables. Specific functions for tight curves, switches and crossings enable a detailed analysis of urban sections. A Track‑Independent Vehicle Indicator integrated into the system separates vehicle‑ and track‑related contributions to the vibration levels, enabling manufacturers and operators to clearly demonstrate their respective responsibilities. Finally, the application compares different mitigation options with regard to the expected level reduction, transparently indicating uncertainties. Measurements on reference lines in several countries are used for validation and are incorporated into calibration.