救助训练模拟舱结构设计及动力特性分析

发布时间：2018-01-13 02:26

本文关键词：救助训练模拟舱结构设计及动力特性分析　出处：《大连海事大学》2015年硕士论文　论文类型：学位论文

【摘要】：本文设计的救援训练模拟器用于在陆上实验室中模拟训练救生人员在恶劣海况条件下进行的直升机悬停救助任务。相对于实际训练,它具有安全高效,节省成本等优点,必将成为救援训练的重要方式之一。目前,我国救助训练主要还是在实际环境中的训练,为保证安全,还难以开展恶劣海况下的训练,大连海事大学根据恶劣海况下直升机悬停救助的特点,提出建立由天车平移系统、电动六自由度平台、机舱-绞车、模拟海上救助环境等构成的直升机悬停救助模拟系统,可以代替恶劣海况下直升机悬停救助的绝大部分任务。本论文着重针对直升机救援训练模拟舱的结构设计与动力学分析进行研究,根据总体要求设计出模拟舱的结构并进行校核,通过模拟真实救援动作进行动力学分析,寻找出极限工况并对其进一步做有限元分析,从而确保模拟舱在运动中的安全性。首先,现场采集直升机在救援训练时的位姿数据,通过反解数据等方法获得模拟舱的运动位移。根据救生员训练大纲及实际情况提出了模拟舱结构设计的特点与品质要求。最终确定了模拟舱结构设计的总体要求及参数。其次,根据所提出的要求进行设计。根据设计的总体要求与实际情况,设计了模拟舱骨架及模拟舱地板、蒙皮、连接横梁、绞车连接臂等附件。在满载荷的情况下,对所设计的部件进行了有限元分析,从而确定了模拟舱结构的材料,保证了舱体的稳定性与安全性。最后,进行动力学分析及极限工况的有限元分析。建立了动力学仿真模型及有限元仿真模型。通过输入直升机真实救援时动作位姿数据,获得了模拟舱的实时受力。在舱体受到最大受力及加速度的情况下,进行有限元仿真与分析。分析结果表明：本文简化后建立的模型与实际结构基本相符,所做的仿真分析真实的反映了救助直升机训练模拟舱机械系统的特性,验证了救助模拟舱满足静态与动态救援训练的强度要求和安全性要求。
[Abstract]:The rescue training simulator designed in this paper is used to simulate the rescue mission of helicopter hovering under the bad sea condition in the land laboratory. Compared with the actual training, it is safe and efficient. Cost saving and other advantages will become one of the important ways of rescue training. At present, rescue training in China is mainly in the actual environment training, in order to ensure safety, it is difficult to carry out training in bad sea conditions. According to the characteristics of helicopter hovering and rescue in bad sea conditions, Dalian Maritime University puts forward the establishment of crane translation system, electric six degrees of freedom platform and cabin winch. The helicopter hovering rescue simulation system which simulates the sea rescue environment and so on. This paper focuses on the structural design and dynamic analysis of helicopter rescue training simulation module. According to the overall requirements, the structure of the simulation module is designed and checked. By simulating the real rescue operation, the dynamic analysis is carried out to find out the limit conditions and do the finite element analysis. In order to ensure the safety of the simulation module in the movement. Firstly, the position and posture data of the helicopter in rescue training are collected on the spot. The movement displacement of the simulated cabin is obtained by inverse solution data. According to the training outline and the actual situation of the lifeguard, the characteristics and quality requirements of the structural design of the simulated cabin are put forward. Finally, the overall requirements of the structural design of the simulated cabin are determined. And parameters. Second. According to the requirements of the design, according to the overall requirements and the actual situation of the design, design the simulated cabin skeleton and the simulated cabin floor, skin, connecting beam, winch connection arm and other accessories. Under the full load condition. The finite element analysis of the designed components is carried out to determine the material of the simulated cabin structure and to ensure the stability and safety of the cabin. Finally. The dynamic analysis and finite element analysis of the limit condition are carried out. The dynamic simulation model and the finite element simulation model are established. In the case of the maximum force and acceleration of the cabin, the finite element simulation and analysis are carried out. The analysis results show that the simplified model is basically consistent with the actual structure. The simulation results reflect the characteristics of the mechanical system of the rescue helicopter training simulation module, and verify that the rescue simulation module meets the strength and safety requirements of the static and dynamic rescue training.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U676.8;V216.8

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