Reduction of noise from Swedish railway traffic
|CHALMERS TEKNISKA HÖGSKOLA AKTIEBOLAG - Kompetenscentrum i järnvägsmekanik
|Funding from Vinnova
|SEK 4 000 000
|January 2006 - December 2012
Purpose and goal
The aim is to create a model for prediction of rail corrugation growth in curves. This will be accomplished by developing the computer code DIFF3D, which admits simulation of simultaneous excitation from low frequency vehicle dynamics in curves and from high frequencies induced by irregularities with short wavelengths on the rail head. Further, an improved prediction model for noise generation induced by interaction between wheels and rails will be developed. Both rolling noise and squeal noise that occurs at curve negotiation will be treated.
Results and expected effects
A measurable result of the project will be optimized noise reduction methods accomplished by the validated theoretical, numerical and experimental methods that are developed in the project.
Approach and implementation
The project will be part of the activities in the Competence Centre CHARMEC, and it is carried out in cooperation between the Division of Dynamics (at the Department of Applied Mechanics) and the Division of Applied Acoustics (at the Department of Civil and Environmental Engineering) through two PhD projects within the two main areas corrugation growth in curves and noise generation from the wheel-rail contact.