Experiment in the thermodynamics of the nonequilibrium state: Mechanical system with friction

Conclusions

The thermodynamics of the nonequilibrium state permit description of the substantially nonequilibrium process of mechanical motion with friction, that is of known difficulty for classical mechanics and thermodynamic analysis.

Experimental data on the dynamics of rotor deceleration are qualitatively and quantitatively in agreement with the conceptions and relationships of the thermodynamics of the non-equilibrium state, confirm the physical reliability of the new thermodynamic functions A, Φ, τ and indicate the usefulness of the obtained formulas in practical engineering computations associated with the determination of energetic losses by friction in machine and mechanism components, and with the determination of the deceleration path of transport facilities, etc. For instance, compared with empirical fourth-degree power-law equations, (8) has the advantage that it reduces the number of coefficients to be determined.