The present research deals with the prediction of the friction coefficient value of a rubber compound sliding on a hard rough surface. It is well known that the coefficient value is a function of the working conditions, i.e. of the sliding speed, of the normal contact pressure, of the rubber bulk and surface temperature and of the surface roughness. The proposed predictive model, based on a very detailed FE schématisation of a rubber tread element, assumes that the adhesive energy (that will be called from now on local friction) between the contacting bodies constant, i.e. independent of the above listed parameters. It will be shown that the non-linear behaviour of the friction coefficient at a macroscopic scale is due to the hyper-elastic and visco-elastic properties of rubber.
A predictive friction law for rubber compounds based on FE analysis
BRAGHIN, FRANCESCO
2005-01-01
Abstract
The present research deals with the prediction of the friction coefficient value of a rubber compound sliding on a hard rough surface. It is well known that the coefficient value is a function of the working conditions, i.e. of the sliding speed, of the normal contact pressure, of the rubber bulk and surface temperature and of the surface roughness. The proposed predictive model, based on a very detailed FE schématisation of a rubber tread element, assumes that the adhesive energy (that will be called from now on local friction) between the contacting bodies constant, i.e. independent of the above listed parameters. It will be shown that the non-linear behaviour of the friction coefficient at a macroscopic scale is due to the hyper-elastic and visco-elastic properties of rubber.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
