“Poisson’s ratio”的概念、定义、翻译、参考文献-科学参考

Poisson’s ratio

Physics

The ratio of the lateral strain to the longitudinal strain in a stretched rod. If the original diameter of the rod is d and the contraction of the diameter under stress is Δ‎d, the lateral strain Δ‎d/d=s_d; if the original length is l and the extension under stress Δ‎l, the longitudinal strain is Δ‎l/l=s_l. Poisson’s ratio is then s_d/s_l. For steels the value is between 0.28 and 0.30 and for aluminium alloys it is about 0.33. It was first introduced by Siméon-Denis Poisson (1781–1840).

Chemical Engineering

The ratio of the lateral strain to the longitudinal strain in a material held under tension. When a sample of material is stretched (or squeezed), there is a contraction (or extension) in the direction perpendicular to the applied load. Poisson’s ratio is the ratio between these two quantities. The value lies between −1.0 and 0.5. It was introduced by French mathematician and physicist Siméon-Denis Poisson (1781–1840).

Geology and Earth Sciences

The ratio of latitudinal to longitudinal strain, which describes the extent to which a material is distorted in a direction perpendicular to an applied stress:
$Y = e_{(normal to σ 1)} / e_{(parallel to σ 1)},$
where Y is Poisson’s ratio, e the strain, and σ‎1 is the maximum principal stress. It is named after Simeon Poisson (1781–1840).

单词	Poisson’s ratio
释义	Poisson’s ratio Physics The ratio of the lateral strain to the longitudinal strain in a stretched rod. If the original diameter of the rod is d and the contraction of the diameter under stress is Δ‎d, the lateral strain Δ‎d/d=s_d; if the original length is l and the extension under stress Δ‎l, the longitudinal strain is Δ‎l/l=s_l. Poisson’s ratio is then s_d/s_l. For steels the value is between 0.28 and 0.30 and for aluminium alloys it is about 0.33. It was first introduced by Siméon-Denis Poisson (1781–1840). Chemical Engineering The ratio of the lateral strain to the longitudinal strain in a material held under tension. When a sample of material is stretched (or squeezed), there is a contraction (or extension) in the direction perpendicular to the applied load. Poisson’s ratio is the ratio between these two quantities. The value lies between −1.0 and 0.5. It was introduced by French mathematician and physicist Siméon-Denis Poisson (1781–1840). Geology and Earth Sciences The ratio of latitudinal to longitudinal strain, which describes the extent to which a material is distorted in a direction perpendicular to an applied stress: $Y = e_{(normal to σ 1)} / e_{(parallel to σ 1)},$ where Y is Poisson’s ratio, e the strain, and σ‎1 is the maximum principal stress. It is named after Simeon Poisson (1781–1840).
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