Principal Stress
Definition
The maximum and minimum normal stresses that occur on planes where shear stress is zero. These are eigenvalues of the stress tensor and represent the extreme values of normal stress at a point.
Practical Note
Principal stresses (σ₁, σ₂, σ₃) are used in failure theories like Von Mises and Tresca. The maximum principal stress often governs brittle material failure.
Related Calculators
⭕Mohr's Circle Calculator
Calculate principal stresses, maximum shear stress, and stress transformation angles using Mohr's Circle for plane stress analysis.
📐Beam Deflection Calculator
Calculate maximum deflection, bending moment, and stress for simply supported and cantilever beams. Includes 3D visualization.