The structural rigidity of aluminum ribs has an important impact on the safety of navigation. To improve the structural rigidity of a ship, the rib structure of an aluminum ship is taken as the research object, and its three-dimensional model and finite element model are established respectively. The thickness of the aluminum rib steel plate is optimized by the combination of neural network algorithm and structural stress calculation model. Through iterative calculation, the stiffness of the aluminum rib structure is stable and the stiffness value is significantly improved.
The use of small pieces of small solid wood panels for splicing greatly reduces the degree of waste, saves production costs, and is relatively easy to assemble. The bonding strength of the materials between the rib frames is greatly enhanced by cold lamination, and is carried out by a numerically controlled lathe. Cutting to ensure the accuracy of the ship's rib frame.
The main rib is also called a solid rib, and is a non-watertight rib that opens a manhole, a water hole, a vent hole and a through hole. A hole is formed in the main rib plate, and at the same time acts to reduce the hole to reduce the structural weight. The position of each rib opening should be arranged in a straight line in the direction of the ship. The height of the manhole should not be greater than half the height of the double bottom, otherwise it should be strengthened. The size of the relief hole that is not used as a manhole can be reduced. A semicircular or semi-long circular water hole is formed at the lower edge of the main rib. Ventilation holes should also be opened at the upper edge to allow air to circulate, so as to avoid the formation of air cushions and affect irrigation and oil filling. In order to ensure the rigidity of the aluminum ribs, the vertical reinforcement is used between the two manholes.