Slope stability analysis considering tangential resistance of reinforcement;

The factors affecting tangential resistance between coal and working parts,such as water content of coal and normal pressure,are analyzed.

A study on anti blending surface for decreasing viscosity resistance;

Comparing with hydrodynamics and based on the second Newton s law,traffic pressure,viscosity factor and viscosity resistance which could be easily to calculate were proposed.

Comparing with hydrodynamics and the second Newton s law, traffic pressure, viscosity factor and viscosity resistance are proposed which can be easily to calculate.

Based on the computational methods of wave statistic characteristics in the long-term distribution,viscous resistance in waves for hull,and Green function in the frequency for motion and loads a procedure to select sea-state,to determine the transition drag of hull,and to predict motion and wave loads for FPSO transition is developed and used to a FPSO transit work.

In addition to the well-known viscous damping force, the proposed force model includes the Coulomb damping force which accounts for the effect of water soakage on materials of cable surface.