Design of mooring system

The main research of this paper is that the optimal scheme for the design of a mooring system in a different state is to balance the whole system.In order to accurately describe the relevant position, length, shape and tilt Angle of the object, this article is based on the minimalist principles, in order to anchor point position as the origin, the direction of the sea level for the x axis is parallel, perpendicular to the direction for the y axis is, sea level at anchor in the plane rectangular coordinate system is established.In order to solve the problem, first, the overall force of the system is analyzed, and for the sake of simplicity, all the links of the anchor chain are separated from the bottom of the sea.The external force by the system for the whole system, is under the condition of static water only from wind, support and resistance of the bottom, all the objects in the sea of gravity and buoyancy and buoy gravity and buoyancy.According to the principle of force equilibrium, to orthogonal decomposition of the force, it is concluded that in equilibrium the x, y direction of the force, further analysis for the whole system by the wind and the sea of equal resistance.Due to buoy the stressed area of wind and buoyancy drainage volume and water depth, so the anchor force analysis, get two groups about draft depth equation, and then work out when the wind speed of 12 m/s, draft a depth of 0. 8661 meters, wind and buoyancy is respectively 204 N and 27891 N; When the wind speed was 24m/s, the depth of the draft was 0.8347 meters, and the wind and buoyancy were 839N and 26880N respectively.Then the curve equation of the anchor chain shape was determined by the suspension chain method [1] Buoy floating range is 16 meters radius of circular surface, steel drum and vertical direction Angle is 3.01 °, at last, according to the result of solving the chain when wind speed of 12 m/s was not fully prove the hypothesis of raised.