翻訳と辞書
Words near each other
・ Hydrosilylation
・ Hydrosis
・ Hydroskimming
・ HYDROSOL
・ Hydrospace
・ Hydrosphere
・ Hydrospring
・ Hydrostachys
・ Hydrostachys imbricata
・ Hydrostatic equilibrium
・ Hydrostatic head
・ Hydrostatic loop
・ Hydrostatic seal
・ Hydrostatic shock
・ Hydrostatic skeleton
Hydrostatic stress
・ Hydrostatic test
・ Hydrostatic weighing
・ Hydrostatics
・ Hydrosteer
・ Hydrotaea
・ Hydrotaea dentipes
・ Hydrotaea diabolus
・ Hydrotalcite
・ Hydrotarsus
・ Hydrotarsus compunctus
・ Hydrotarsus pilosus
・ Hydrothauma
・ Hydrotherapy
・ Hydrotherikornis


Dictionary Lists
翻訳と辞書 辞書検索 [ 開発暫定版 ]
スポンサード リンク

Hydrostatic stress : ウィキペディア英語版
Hydrostatic stress
In continuum mechanics, a hydrostatic stress is an isotropic stress that is given by the weight of water above a certain point. It is often used interchangeably with "pressure" and is also known as confining stress, particularly in the field of geomechanics. Its magnitude \sigma_h can be given by:
:\sigma_h = \displaystyle\sum_^n \rho_i g h_i
where i is an index denoting each distinct layer of material above the point of interest, \rho_i is the density of each layer, g is the gravitational acceleration (assumed constant here; this can be substituted with any acceleration that is important in defining weight), and h_i is the height (or thickness) of each given layer of material. For example, the magnitude of the hydrostatic stress felt at a point under ten meters of fresh water would be
:\sigma_ = \rho_w g h_w =1000 \,\text^3 \cdot 9.8 \,\text^2 \cdot 10 \,\text =9.8 \cdot =9.8 \cdot 10^4
where the index w indicates "water".
Because the hydrostatic stress is isotropic, it acts equally in all directions. In tensor form, the hydrostatic stress is equal to
:\sigma_h \cdot I_3 =
\left(\begin
\sigma_h & 0 & 0 \\
0 & \sigma_h & 0 \\
0 & 0 & \sigma_h \end \right
)

where I_3 is the 3-by-3 identity matrix.


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Hydrostatic stress」の詳細全文を読む



スポンサード リンク
翻訳と辞書 : 翻訳のためのインターネットリソース

Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.