Poisson's Ratio for Central-Force Polycrystals *
نویسنده
چکیده
The Poisson ratio v of a polycrystalline aggregate was calculated for both the face-centered cubic and the body-centered cubic cases. A general two-body central-force interatomatic potential was used. Deviations of v from 0.25 were verified. A lower value of v is predicted for the f.c.c. case than for the b.c.c. case. Observed values of v for twenty-three cubic elements are discussed in terms of the predicted values. Effects of including volume-dependent electron-energy terms in the interatomic potential are discussed.
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