NONLINEAR STABILITY THEORY OF FLOATING BODIES ON VISCOUS LIQUID

The problem of nonlinear stability of equilibrium floating bodies on viscous liquid is discussed by using the stability theory of continuous system. The nonlinear disturbances being considered involve the orientation angles of the floating bodies, location of the centre of mass and the velocity of fluid. The criteria for nonlinear stability, asymptotical stability and instability with respect to various kinds of distance are given.