principal stress axes

Orthogonal axes normal to planes on which shear stress is zero. Along two of these axes normal stress is maximal and minimal. The third axis is called the intermediate principal stress axis

Related terms:

• principal strain axes
• principal stress values
• instantaneous stretching axes (ISA)
• principal stress
• X-, Y- and Z-axes
• principal strain
• foliation intersection/inflection axes (FIA)
• principal strain values
• hydrostatic state of stress
• principal stretches