Paper Details: Vibro-Dynamic Approach Of The Platform And The Interface Of The Railways Ballast.
Volume 3 - Issue 9, September 2019 Edition
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G. Tchemou, P. W. Huisken Mejouyo
ballast; modelling; mechanics; moving material; railways.
This study highlights the importance of the geotechnical characteristics of the platform taking into consideration the vibratory combination of systems which tend to support the separation of the particles. Considering the diffusion of the pressure in the ballast, it has been divided into three zones: ballast without overcharging, ballast under the pressure of a crossbar and ballast under the pressure of two crossbars. At first, we have to study the behaviour of the ballast in the zone without overcharge and the studies of the two aforementioned zones will be presented in future. The most possible scheme for the calculations can be simplified thus; preamble platform like a vibrant plate, ballast like a ball and distances between the axles of the trains are equal between them. The analysis of the system drives us to two equations: differential equation (platform) and polynomial equation (ballast). It should be noted that this phase of movement is only observed when the ball detaches itself from the platform. So, when the strength of contact between the two bodies annuls itself to a certain moment. What corresponds to the case that the acceleration of the weight and the movement oscillating would be in the same way.
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