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.
John Paul Jones. Introduction. Famed naval officer John Paul Jones was born in Scotland in 1742. His career at sea began at age 13, and by 21 he was the captain of a ship sailing between the West Indies and British ports. Jones joined the Continental navy during the American Revolution, enjoying his greatest successes in international waters.