Updated About encyclopedia.com content Print Article
deviatoric stress 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.