Modeling and lofting method for ship fairing

Abstract

The invention discloses a modeling and lofting method for a ship fairing, which comprises the following steps of: according to upper end sample line data and lower end sample line data provided in a molded line graph of the fairing, performing interpolation processing on the fairing, acquiring molded value data at each gear of rib position, and performing optimization processing on an area which is not smooth enough; importing the data into curved surface modeling software, and establishing an upper end sample line stretching curved surface and a lower end sample line stretching curved surface of the fairing; intersecting the upper end sample line stretching curved surface of the fairing with the outer plate surface of the ship body of the ship to obtain the upper end boundary of the curved surface of the fairing; intersecting the lower end sample line stretching curved surface of the fairing with the lower end sealing plate surface of the fairing to obtain the lower end boundary of the fairing curved surface; and establishing the curved surface of the air guide sleeve, and completing modeling and lofting of the curved surface of the air guide sleeve. The method solves the problem of inaccurate modeling and lofting in the design and production of the fairing, improves the production efficiency of the design and production of the fairing, and belongs to the technical field of shipbuilding production design.

Description

technical field [0001] The invention relates to the technical field of shipbuilding production design, in particular to a modeling and lofting method for a ship fairing. Background technique [0002] In recent years, since the azimuth propeller has the characteristics of 360° rotation of the propeller around the vertical axis and has better propulsion and maneuvering functions, the number of electrically driven ships using azimuth propellers has gradually increased. Small and medium-sized engineering ships generally adopt double full-turn propellers, which are usually arranged symmetrically on the left and right at the stern of the hull. In order to ensure better hydrodynamic performance and higher propulsion efficiency of the dual azimuth propellers during layout, the axes of the double azimuth propellers should be as close to vertical as possible to the line shape of the outer shell of the hull, so that the propellers face the direction of the incoming water flow, so as to...

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Problems solved by technology

[0003] Aiming at the technical problems existing in the prior art, the purpose of the present invention is to: provide a method for modeling and setting out of a ship's windshield, the invention solves the problem of inaccurate modeling and setting out in the design and production of the windshield, and improves Efficiency of design and production of shroud production

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