The original formulas for cantilever beam calculations were created by Ken-ichi Anjyo around 1992, and were later used in calculating software by M. Sheridan in 1994. Beams that are held up or braced only at one end are called cantilever, and these beams can be found in common structures such as balconies, bridges, roofs, and in airplane wings. Distorting occurs on cantilever beams with bending
. caused by gravity and force along the beam. Equations are determined by and may change based on the constants, dimensions, and loads in relation to the beam. You can find more information here: http://www.engineeringcalculator.net/beam_calculator.html