Stress 12
Stress 12 : Force, resolved into normal and tangential components, exerted per unit area on an infinitesimal surface. A complete description of stress (i.e., the stress tensor) at a point in a three dimensional reference frame requires the specification of the three components of stress on each of three surface elements orthogonal to one of the reference axes. Hence there are nine components of stress. However, in a homogeneous, isotropic medium (i.e., classical continua, consisting of point masses), the balance of torque implies the symmetry of the stress tensor and therefore reduces the stress description to six independent components: three normal components and three shear components. In micropolar theory, stresses may be nonsymmetric. In contrast, traction is a force vector defined for a particular surface. See IS 3.1 in this Manual as well as Ruff (2002), Zoback and Zoback (2002), Johnston and Linde (2002), and Figure 1 in Ben-Zion (2003)
No records Found