Dynamic Analysis And Parametric Design Of Air-operated Dry-dock Falling Gate

During the past 30 years, especially in recent 10 years, the repair-manufacture ship industry in our country has a rapid development, and the repair-manufacture ship ability has been improved tremendously, in which the quantity of the large-size shipyard has increased continuously. Furthermore, a lot of large-size shipyards will be constructed in the coming years. The dry-dock falling gate is the key equipment of the large-size shipyard, which influences the total performance of the entire shipyard if it is designed improperly. In order to improve the dry-dock falling gate's design level, the paper studies dynamic characteristics parametric modeling of the dry-dock falling gate.There are four key segments in the design of the dry-dock falling gate, which have been studied in this paper: the research on the dry-dock falling gate's structure design; the research on the dynamic characteristics about the dry-dock falling gate; the research on the parametric modeling of the dry-dock falling gate; the research on special simulative system of the dry-dock falling gate.(1) The design of the dry-dock falling gate's structure is researched, and integrates the disquisitions and analysis on the dynamic characteristics about dock gate, in order to make the cabin design more visualizing.(2) The emphasis of this paper is the influence of the water hole and gas hole in the tidal cabin and the influence of the drain of the air-operated cabin.(3) In this paper, the building method of the dry-dock falling gate's parametric model is studied and the dynamic analysis is accomplished in ADAMS, furthermore, the rising-and-falling angle curve is drawn while the dry dock gate is rising and falling.(4) The paper is based on the apprehension of the past theories and researches about air-operated dry-dock falling gate, and is explicated by hydraulic rationales and rising-and-falling mechanical principles. This software is developed by inner programming language in ADAMS and VC. This design could shorten design cycle. It indicates the credibility of the system through the concrete instances .