TRANSIT aims at realizing a break-through in virtual testing and virtual certification by developing validated source characterization, exterior noise simulation models, and measurement-based separation techniques.
Topic
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Advances in TRANSIT
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Exterior noise simulation model that includes validated integration effects and uncertainties
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- Installation effects and refraction in the transmission paths
- Estimation of uncertainty on predicted noise levels
- Validated exterior noise simulation tool
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Validated and robust source characterization methods that provide sound power and directivity
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- Definition of strength and directivity of sources
- Equivalent source models to represent strength and directivity
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Pass-by noise source separation techniques that allow for accurate quantification of sound power
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- Improved pass-by source separation including source strength and directivity
- Validation and uncertainty assessment
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Vehicle/track separation techniques that establish the independent contributions of track and vehicle, including the possibility of transposition from one track to another
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- Enhancement and simplification of separation methods
- Separation of wheel and rail roughness
- Separation of vertical and lateral rail vibration contributions
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Tailored light-weight materials designed for targeted frequency bands that allow for optimized interior noise
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- Feasibility study of innovative solutions
- New designs for improved interior noise comfort
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