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STRESS COMPONENTS

STRESS COMPONENTS
saurabhjain
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The stress at a given point is mathematically defined by nine values:

- Three to specify the normal components.
- Six to specify the shear components, relatively to three mutually perpendicular reference axes.

Stress is a tensor of second rank. The forces area thought to act on every one of the infinitesimal elements of area with different orientation, which can be imagined at one point. Only such forces are considered, which are locally in equilibrium with equal and opposite forces: Tensor is symmetrical. The stress across a plane through any given point located at the surface or inside of a rock can be resolved into two components:

a) Normal stress, symbolized by Greek letter SSigma.jpg, acting normal to the plane.
B) Shearing stress, or tangential stress, symbolized by Greek letter t, acting along the plane, perpendicular to the normal stress.

Shearing or Tangential stresses can be:

a) Dextral or Clockwise

B) Sinistral or Counterclockwise

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