A new dynamic friction model for modeling of elliptical vibration assisted turning (EVAT) was developed in this research. The periodic change of the friction force direction is known to be one of the most important causes of this phenomenon. In modeling of machining processes (including the EVAT process), static Coulomb friction model was employed by most of the researchers. Because of the peri...

We investigate the color-Coulomb confinement scenario using a SU(3) lattice gauge simulation. It is shown that the color-Coulomb heavy-quark potential, defined from the instantaneous part of the gluon propagator in Coulomb gauge, behaves as a linearly rising potential at large distances, and the resulting Coulomb string tension is greater than the Wilson-loop string tension. We study also the b...

quadratic stark constants of neutral copper spectral lines for all s,p, and d levels are calculated using the coulomb approximation. these results are compared with existing data and, generally, good agreement is observed

A finite element program based on elastic –plastic model of Mohr-Coulomb criterion was used to evaluate the bearing capacity coefficients of soil under shallow strip flexible footing . The results were compared with others’ analytical results and it was found that the present study could offer quite consistent and rather precise values for the bearing capacity coefficients . &#10&#10The effect ...

In this paper, using Monte Carlo Fortran code, we have obtained the binding energies for three different systems of diquark–antidiquark in distances from 0.01 to 15 nm. In [0.1 - 15] nm interval, we made use of Coulomb potential because in this interval, strong interaction is negligible. We have compared the binding energies of the systems with one another. The results of these comparisons...