Retaining walls in axi-symmetric conditions and plane strains have been widely treated the literature using different approaches (limit equilibrium, limit analysis, slip line, numerical techniques by finite elements or differences). The element difference method provides more accurate solutions to problem than equilibrium method. In this paper, a new model of retaining wall axi-symmetry under o...

The initial equations for solving the axisymmetric problem are given and consideredboundary conditions on end surfaces average section of design element. As a result, we get system partial differential that can be solved by numerical-analytical (modified) method straight lines. transformation reduced equilibrium in parts, as well models boundary section, shown. value ordinary derivatives writte...

Recent results show that a nonsmooth time invariant feedback control law can be used to stabi lize an axi symmetric rigid body using only two con trol torques to the zero equilibrium This method however may require a signi cant amount of con trol e ort especially for initial conditions close to an equilibrium manifold In this paper we propose a control law which reduces the control e ort re qui...