The free vortex aerodynamics window is used to be the window of high power laser beam, which takes advantage of the centripetal force of the free vortex motion of fluid.
According to principle of bridge vibration, this paper lead through boundary condition of freebeam and deduce vibrational equation of freebeam to solve rigidity and model of vibration.
The dynamic response of a freefreebeam with uniform rectangular cross section subjected to impact by a mass at both free end is analyzed theoretically.