deviatoric stress

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A stress component in a system which consists of unequal principal stresses. There are three deviatoric stresses, obtained by subtracting the mean (or hydrostatic) stress (σ-) from each principal stress (i.e. σ1 – σ-, σ2 – σ-, and σ3 – σ-). Deviatoric stresses control the degree of body distortion.

Subjects: Earth Sciences and Geography.

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