To understand the bending stress in an arbitrary loaded beam, consider a small element cut from the beam as shown in the diagram at the left. The beam type or actual loads does not effect the derivation of bending strain equation. Recall, the basic definition of normal strain is.implifying and rearranging gives, This equation gives the bending normal stress, and is also commonly called the flexure formula. The y term is the distance from the neutral axis (up is positive). The I term is the moment of inertia about the neutral axis.
John Paul Jones was a hero of the colonial navy during the American Revolution. He defeated a British ship in one of the most famous sea battles in history. (1747-92). The first great American naval hero was Captain John Paul Jones.
For other ships with the same name, see USS John Paul Jones. USS John Paul Jones (DDG-53) is the third Arleigh Burke-class guided missile destroyer and the first ship of the class homeported on the west coast. She is named after American Revolutionary War naval captain John Paul Jones. She was built at Bath Iron Works in Bath, Maine.