Dynamics of dry friction: A numerical investigation

Dynamics of dry friction: A numerical investigation

We perform extended numerical simulation of the dynamics of dry friction, based on a model derived from the phenomenological description proposed by Baumberger et al. @Nature ~London! 367, 544 ~1994!# and Heslot et al. @Phys. Rev. E 49, 4973 ~1994!#. Under a quasistationary approximation, the model is related to the Dieterich-Ruina aging ~or slowness! law, which was introduced by Dieterich @Pur...

Numerical and Experimental Investigation of Yielding for Cohesive Dry Powder

We study the effect of particle cohesion on the steady state shear strength of a granular material. For cohesive powders, the steady state shear loci (termination loci) from DEM simulations are nonlinear with a peculiar pressure dependence due to the non-linear increase of contact adhesion with pressure in the contact model. Physical experiments are carried out on fine limestone powder in the d...

Identification of a system with dry friction

Symbolic-Numerical Investigation of Gyrostat Satellite Dynamics

Dynamics of gyrostat satellite moving along a circular orbit in the central Newtonian gravitational field is studied. A symbolicnumerical method for determination of all equilibrium orientations of gyrostat satellite in the orbital coordinate system with given gyrostatic torque and given principal central moments of inertia is proposed. A computer algebra method based on the algorithm for the c...

Analytical investigation of periodic solutions for a coupled oscillator with dry friction

In this paper, we present an analytical method to investigate the behavior of a two degrees of freedom oscillator excited by dry friction. The system consists of two masses connected by linear springs. These two masses are in contact with a driving belt moving at a constant velocity. The contact forces between the masses and the belt are obtained from Coulomb’s friction laws. A set of periodic ...