principal strain axes

Orthogonal axes along which shear strain is zero. Along two of these axes, stretch values are maximal and minimal. The third axis is called the intermediate principal strain axis

Related terms:

• principal stress axes
• principal strain values
• instantaneous stretching axes (ISA)
• X-, Y- and Z-axes
• principal stretches
• principal strain
• flattening strain
• constrictional strain
• strain ellipsoid
• principal stress values