A numerical model to predict train induced vibration is presented. The dynamic computation considers mutual interactions invehicle/track coupled systems by means of a finite and discrete elements method. The rail defects and the case of out-of-roundwheels are considered. The dynamic interaction between the wheel-sets and the rail is accomplished by using the non-linearHertzian theory. The strong point of this study consists in the model used to simulate the behaviour of pads. The rail-sleepercontact is assumed extended to an area defined such a contact-zone, rather than a single point assumption which fits better realcase studies. Experimental and numerical validations show how prediction fits well experimental data.

Numerical Modelling of Train Induced Vibrations

LEONARDI, Giovanni
;
2012

Abstract

A numerical model to predict train induced vibration is presented. The dynamic computation considers mutual interactions invehicle/track coupled systems by means of a finite and discrete elements method. The rail defects and the case of out-of-roundwheels are considered. The dynamic interaction between the wheel-sets and the rail is accomplished by using the non-linearHertzian theory. The strong point of this study consists in the model used to simulate the behaviour of pads. The rail-sleepercontact is assumed extended to an area defined such a contact-zone, rather than a single point assumption which fits better realcase studies. Experimental and numerical validations show how prediction fits well experimental data.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12318/4825
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