Tresca criterion

The Tresca criterion is a principle used in material science and engineering to predict when a material will yield, or permanently deform, under stress. It states that a material will fail if the maximum difference between its shear stresses exceeds a certain limit. Essentially, it helps engineers determine the safety and durability of materials under various loading conditions by focusing on the shear stress, which is the force that tends to cause layers within a material to slide past one another. This approach is particularly useful for ductile materials like metals.