yield stress

Differential stress value, above which a material starts to deform permanently. Below the yield stress deformation is elastic. Since stress and elasticity are tensors, the yield stress is not a single number in most materials

Related terms:

• specific yield
• deviatoric stress
• Triaxial state of stress
• ambient stress field
• sediment yield
• principal stress axes
• differential stress
• principal stress values
• shear stress
• mean stress