By F. Margiocchi, F. Poisson (auth.), Tatsuo Maeda, Pierre-Etienne Gautier, Carl E. Hanson, Brian Hemsworth, James Tuman Nelson, Burkhard Schulte-Werning, David Thompson, Paul de Vos (eds.)
This quantity comprises the contributions to the tenth overseas Workshop on Railway Noise, held October 18–22, 2010, in Nagahama, Japan, prepared by means of the Railway Technical learn Institute (RTRI), Japan. With eleven classes and three poster classes, the workshop featured shows through foreign leaders within the box of railway noise and vibration. All matters with regards to 1. customers, criminal legislation, and conception; 2. wheel and rail noise; three. structure-borne noise and squeal noise; four. ground-borne vibration; five. aerodynamic noise and micro-pressure waves from tunnel portals; 6. inside noise and sound boundaries; and seven. prediction, measurements, and tracking are addressed the following. This ebook is an invaluable “state-of-the-art” reference for scientists and engineers curious about fixing environmental difficulties of railways.
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Extra info for Noise and Vibration Mitigation for Rail Transportation Systems: Proceedings of the 10th International Workshop on RailwayNoise, Nagahama, Japan, 18–22 October 2010
G. FASTSIM). This paper investigates more sophisticated friction laws in non-Hertzian models of wheel-rail rolling contact, using a variational method, which incorporates full linear elastic theory and non-local interactions. The effect of falling friction on tangential stress distribution is examined, for different relationships between friction and slip velocity. Results are presented from two independently programmed models based on Kalker’s rolling contact theory : a specially modified version of CONTACT  and the time-stepping model of Croft .
5 M,HA based on mean . 35 Probability of Annoyance M,HA based on mean+2σ FTA Residential Sound Pressure Level Limit . 05 0 20 25 30 35 40 45 50 55 60 65 70 Passby Maximum A-weighted RMS Vibration Velocity Level (dB) . Fig. 2. Prob. 1 Duration of Residency in the Community At the time of interviewing, more than 95% of the D-12 respondents had lived in their homes for longer than a year. Hence, their opinions regarding annoyance reflect their long-term familiarity with the exposure conditions, rather than transient reactions to a novel exposure.
A detailed description is found in . The wheelset is assigned two coordinate systems: one inertial coordinate system (XYZ) and one floating coordinate system ( XY Z ) that rotates with the wheelset at a constant angular velocity Ω, see Fig. 1(b). Using time-variant Lagrangian modal coordinates p(t), the location of grid point p in Fig. 1) where A(θ) is the transformation matrix from the floating coordinate system to the inertial coordinate system, u p0 and u pf are the undeformed location vector and the deformation vector of grid point p with respect to the floating coordinate system and Φ (u p0 ) is the partition of the mass-normalised eigenmode matrix associated with grid point p in the floating coordinate system.
Noise and Vibration Mitigation for Rail Transportation Systems: Proceedings of the 10th International Workshop on RailwayNoise, Nagahama, Japan, 18–22 October 2010 by F. Margiocchi, F. Poisson (auth.), Tatsuo Maeda, Pierre-Etienne Gautier, Carl E. Hanson, Brian Hemsworth, James Tuman Nelson, Burkhard Schulte-Werning, David Thompson, Paul de Vos (eds.)