| The aircraft carrier is a national comprehensive strength reflects which greatly improvesthe comprehensive combat capability of naval. Carrier aircraft is the main weapon; it alsomakes military combat capability of the aircraft carrier formation cover the whole world. Thesafely landing of the carrier aircraft on the deck with limited length is achieved by the brakeand deceleration of the carrier arresting system. The arresting system with good performanceis an important guarantee for the securities of the carrier aircraft pilots and the deck staffs.And carrier aircrafts with different speed or quality can be arrested in the same distancethrough arresting system, thus the comprehensive combat capability of aircraft carriers areimproved a lot. During the research of arresting system, most attention is usually focused onperformance analysis and modeling of the hydraulic system, but the dynamic responseanalysis for arresting system is very little.In this paper, the United Stated MK7.MOD3carrier aircraft arresting system is chosen tobe the research object. First the carrier-based aircraft landing procedures is explored; theworking principle and the basic structure of the arresting system are introduced. Then thetransverse stress wave formation on the first impact of the carrier-based aircraft, thepropagation of stress wave on the second impact of the carrier-based aircraft and therelaxation problem of the arresting cable are all studied in this paper.Then a method todetermine the arresting force variation is dicussed. The arresting force range is determinedunder the premise of maximum allowable tensile of the arrest cable and the maximumoverload of carrier-based aircraft. And then the differential equations between the arrestingforce and the displacement of the carrier aircraft are obtained through the stress analysis of thearresting cable and the main hydraulic cylinder.In order to obtain the complete mathematical model of the arresting system, the paperfirstly builds the kinematics and dynamics equations of the carrier aircraft on basis of theappropriate selections of the reference system and coordinate system and analyzes thesolution of some main loads (the air force, gravity and thrust of the carried-based aircraft andthe arrest force of the cable). And then the establishment of rope dynamic model is finishedon the basis of kinematical analysis of any point in the arresting cable.The mathematicalmodeling is done seperately to several major hydraulic subsystems (the arresting cable system,constant runout system,damper sheave system, cable anchor damper system,) which composeof the arresting system. Because the arresting system is a rigid-flexible multi-body dynamic system, in order tobetter simulate the cable flexible body this paper used the finite element analysis softwareANSYS/LS-DYNA to simulate the arresting system to make the simulation result more closeto the real system. First, the finite element modeling algorithm base of the finite elementmodeling is introduced, then the system geometry entity model is created according to themodel parameters of the arresting system.The finite model is obtained by using free mesh onthe entity model and the key file containing the information of the model is alsooutputted.Then the key file is modified in the post processing software. The main load curvesare added and the aircraft’s initial velocity is set and then the simulation analysis of the modelis finished by using the restart method. In the specific parameters, system can achieve verygood arresting indexes，which verifies the correctness of the simulation model. Simulationsare carried out under different initial parameters of the carrier aircraft, and the influences tothe performance of the arresting system are studied. In additions, the simulation researches ofthe effects of the damper sheave system are also carried out. Finally the connector betweenthe arresting and the transmission cable is selected to be the research object, and themovement of the arresting cable is analyzed. |
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