剪应变 Shearing (physics)

（重定向自Shear centre）

剪应变（shear strain）是材料力学中的名词，定义为一微小材料元素承受剪应力时所产生的角变形量。因此是一个无量纲(dimensionless)的物理量。公式记为

\gamma_{yx} = \lim_{y \to 0} \frac {\Delta x} {y}

其中 $\gamma_{yx}$ 是剪应变， $y$ 是材料元素的高度，， ${\Delta x}$ 是承受剪应力的变形量。

单词	Shear centre
释义	Shear centre 中文百科剪应变 Shearing (physics) （重定向自Shear centre）剪应变（shear strain）是材料力学中的名词，定义为一微小材料元素承受剪应力时所产生的角变形量。因此是一个无量纲(dimensionless)的物理量。公式记为 $\gamma_{yx} = \lim_{y \to 0} \frac {\Delta x} {y}$ 其中 $\gamma_{yx}$ 是剪应变， $y$ 是材料元素的高度，， ${\Delta x}$ 是承受剪应力的变形量。英语百科 Shearing (physics) 剪应变（重定向自Shear centre） Shearing in continuum mechanics refers to the occurrence of a shear strain, which is a deformation of a material substance in which parallel internal surfaces slide past one another. It is induced by a shear stress in the material. Shear strain is distinguished from volumetric strain, the change in a material's volume in response to stress.
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Shear centre