09 April 2020
- Last edited 09 April 2020
Those are the component of the tensor. Lets say a tensor T
What is the meaning of the component Tij of a stress tensor?
It is the j-th component of the force applied on an infinitesimal element, whose orientation is along the i-direction. Note that individual components of a tensor are not really relevant, on the same way as individual components of a velocity vector are not really more relevant either...
What is the meaning of T11, T12, T22, T33 in a 2D axisymmetric flow?
The reference frame is (r,z), both directions being referred to as 1 and 2. They are respectively the radial and axial directions. A third direction (theta or t), referred to as 3, is also considered : the hoop, azimuthal or circumferential direction. Hence, T11 refers to Trr, T22 refers to Tzz, T12 refers to Trz, and T33 refers to as Ttt.