Two-stage high-energy-efficiency ship type optimization design method

Abstract

The invention provides a two-stage high-energy-efficiency ship type optimization design method, which is based on a simulated ship type optimization design mode, based on an uncertainty idea, deeply considers the influence of perturbation of design parameters on the high-energy-efficiency ship type optimization design, and improves the reliability and immunocompetence of the design result on the uncertainty of the design parameters. The method includes: aiming at perturbation design parameters with non-probability information, constructing a complete ship type expression method with high adaptability, and constructing a deterministic ship type optimization model by combining constraint conditions to obtain a deterministic ship type scheme; carrying out sensitivity analysis on the design parameters and the optimization target, extracting the design parameters with important influence values, and taking the design parameters into account to obtain a related analysis map of the design parameters and the optimization target; considering the perturbation influence of parameters, introducing the reliability optimization concept, carrying out ship type parameter reliability analysis and optimization design, and obtaining a high-reliability ship type optimization scheme through multiple calculation methods. Theoretical basis and technical support are provided for development of ship type design in the direction of datamation and reliability.

Description

technical field [0001] The present invention relates to the technical field of ship design, in particular to a two-stage energy-efficient ship type optimization design method. Background technique [0002] Ship shape optimization design is the core link of ship overall design. In recent years, a knowledge-oriented and intelligent ship shape design model——Simulation Based Design (SBD) technology has quietly emerged. The forward design mode of "doing evaluation" has been transformed into a new reverse design mode of "design goal-driven plan generation", which has greatly improved the ship's intelligent design capability. [0003] Reliability refers to the ability or possibility of the system to perform specified functions without failure within a certain period of time and under certain conditions. The reliability of the system can be evaluated by reliability, failure rate, mean interval between failures, etc. In practical problems, parameter perturbations in the external env...

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Problems solved by technology

[0004] The traditional ship type SBD optimization mode is generally based on the determined system parameters and solution model, and is calculated by means of a deterministic optimization method, which ignores the influence of parameter uncertainty and reduces the robustness of the results

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