Study On The Mechanics Of Chamber And Slide System Of Vertical Slide Marine Emergency Evacuation System

At present,the emergency evacuation system has been upgraded aboard,and the relative research has also started gradually in China.The vertical slide marine emergency evacuation system is favored by people because of its fast evacuation speed,low wind load,high reliability and small space taken up in non-working state.In this paper,the personnel evacuation process of vertical slide marine emergency evacuation system and the stress of the system under different states were analyzed and studied.The overall scheme of the Marine emergency evacuation system with vertical slide was established.And verify the time domain and frequency domain responses of large and medium-sized cruise ships under high sea conditions.On this basis,the power system of the ejector was analyzed and calculated,and the total power of the ejector was determined.Besides,the dynamic mode of the launch system was established.The movement of the escaping personnel in the falling process has been analyzed in the third chapter,and the slide system has been divided into network-person model and load-bearing steel cable stress model.On this basis,the steel-flexible body contact model(the "ball-net" collision model)and the single-side fixed series multi-degree-of-freedom vibration model were established,the mathematical and simulation analysis were performed.In the process of analysis,the falling speed,angle and boundary conditions of simulation analysis were determined in turn,and the analysis result was the load of the top of the load-bearing steel cable.The simulation results were in line with the expected estimation.The results of slide dynamics analysis were optimized and then used as the input conditions of the dynamic analysis of the space steel frame to analyze the dynamic response of the space steel frame.Through this way,the dynamic response of the spatial steel frame was analyzed,and the results met the design requirements.The stress modes of the expansion device were analyzed under two extreme states,the expansion state and the storage state.In this paper,the magnitude,direction and operating point of the load on the telescopic device under two conditions were established.On this basis,the static analysis of the telescopic device was carried out to verify the rationality of the track part of the telescopic guide device.The inner contact part of the guide rail was modeled and calculated based on the Hertz contact theory,and the critical parameters in the wheel-rail contact mode were solved.The calculated data in the above two states were compared to verify the rationality of structural mechanical properties.In this paper,free mode analysis and constrained mode analysis were carried out on the space steel structure,which was used to search for the weak points and dangerous frequency of the structure.Then,they were compared with the frequency of external load to confirm that the structure can avoid resonance.The analysis of chute system and cabin system in this paper can effectively showed the rationality of structural parameters of vertical chute Marine emergency evacuation system.This paper had certain reference value for the research of vertical slide Marine emergency evacuation system.