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Abstract: Many recent papers have questioned Irving and Kirkwood-s atomistic expressionfor stress.
In Irving and Kirkwood-s approach both interatomic forces andatomic velocities contribute to stress.
It is the velocity-dependent part thathas been disputed.
To help clarify this situation we investigate 1 a fluid ina gravitational field and 2 a steadily rotating solid.
For both problems wechoose conditions where the two stress contributions, potential and kinetic,are significant.
The analytic force-balance solutions of both these problemsagree very well with a smooth-particle interpretation of the atomisticIrving-Kirkwood stress tensor.



Autor: Wm.
G.
Hoover, Carol G.
Hoover, James F.
Lutsko


Fuente: https://arxiv.org/



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