The sweat pours down like rain even when you're just standing still. You chug down ice water, but it's not enough to cool you down. Ah, what you desperately need is a bowl of Pyeongyang naengmyeon ...
Principal stresses are defined as the maximum and minimum normal stresses in a plane. Principal stresses are perpendicular to each other and oriented such that shear stresses are zero. For 3D stress ...