Design Of Feeding System And Mechanism Research Based On Biological Wriggle Characteristics

Ammunition feeding system is very vital in the ship borne weapon system.In order to equip the naval gun with the capabilities of high speed,long range,rapid mobility and elongated warfare,feeding system is required with an ammunition delivery arrangement meeting all of the mentioned requirements.Therefore,keeping in view of the current problems of the ammunition feeding system having low stability,slow operational speed,low turning and switching stability,less reliability and oversimplification,etc.,this paper has presented a novel biomimetic ammunition feeding system based on the experimental researches on the biological prototype.This system has important consequences to achieve the objectives of large-caliber shipborne gun with large ammunition-reserve cardinal,continuous,rapid and stable delivery,high turning and switching stability,high reliability and generality etc.Firstly,in view of the characteristics of large-caliber Gatling gun with large mass ammunition,high feeding speed,high continuity and good stability etc.,this paper,through experiments on swiftly moving bionic creatures reveals the structure characteristics and motion mechanism of link-type wriggle creatures.It also analyzed the turning and switching stability,motion stability,position retainability and anti-overturning stability,etc.in the rigid-rigid environment.Through the bionic analogy to find common point biological wriggle and ammunition feeding system.Based on the principle of functional bionics,a biomimetic ring structure with wriggle characteristic is proposed;the kinematics and mechanics equations of the biomimetic structure and the evaluation mathematical model of the wriggle transport are built.Additionally,the influences of excitation amplitude,frequency and contact coefficient of materials on the wriggle process of bionic structure are analyzed.Secondly,using the method of the double helical structure of symmetry,a wriggle spiral interlocked ammunition feeding system is proposed.The parameters of the spiral structure are calculated to verify the wriggle delivery function.Moreover,the multi-body dynamic equations of the system and the rigid-rigid and rigid-flexible contact environment equations of the wriggle structures are established by applying Lagrange method and the coupling deformation method.Finally,using the rigid-flexible coupling dynamic numerical method,the dynamics simulation method of wriggle ammunition feeding system is established.Carrying out mechanism simulation for feeding system,which verify the ability of chronology and wriggle of ammunition feed.Subsequently,the performance of the typical chain,drum and wriggle ammunition feeding system are compared selecting a specific type of large-caliber ammunition with the similar working condition.The advantages of switching stability,impact resistance and interface performance of the wriggle biomimetic feeding system are analyzed,providing support for the physical prototype.