新型家用救生舱的结构设计与分析研究

发布时间：2018-08-06 09:20

【摘要】：本文在现有矿用救生舱的研究基础上,借鉴矿用救生舱的设计思路,从耐压性、自振性、抗震性、抗爆性以及热防护性等方面对家用救生舱的舱体结构进行设计,同时对舱门进行整体的结构设计。通过AWE中各模块以及ABAQUS对舱体结构进行了动力学仿真,验证所设计的新型舱体和舱门结构的合理性及可靠性。本文主要从以下方面进行了研究:首先,对新型家用救生舱的整体结构进行设计,依据矿用救生舱的设计思路与总结的相关经验,考虑家用救生舱所处的居民住宅楼的室内环境因素,提出了一种新型家用救生舱结构,即类三角形舱体结构;在现有的锁紧机构的基础上对舱门进行创新性设计,设计出一种带有新型锁紧机构的舱门。其次,对新型家用救生舱的舱体和舱门进行静力学分析,将新型舱体结构(即类三角形舱体结构)以及拱形舱体结构分别导入到ANSYS Workbench中,施加0.3MPa载荷作用,得到两种舱体结构的等效应力云图和总变形云图;由于家用救生舱整体结构必须保证良好的气密性,因此单独对所设计的新型舱门进行计算和校核,通过分析找到变形量最大的位置,通过校核验证设计的可靠性。进而,通过Creo中对类三角形舱体的参数化建模以及在静力学仿真的基础上对类三角形舱体的等效应力、总变形以及质量进行了多目标优化设计。通过设计变量与目标函数的关系曲线,确定影响舱体等效应力、总变形及质量的主要因素是加强筋的长度与宽度及舱体厚度,通过DOE寻优方式找出类三角形舱体结构的最优解。再次,对类三角形舱体结构进行结构抗震分析,对优化后的类三角形舱体施加地震加速度谱载荷,模拟某一地震工况,进行瞬态动力学分析。通过总加速度图、应力图以及总变形图分析得出舱体结构的加速度、变形及应力均不大,表明优化后的类三角形舱体结构满足抗震使用要求。然后,利用AUTODYNA与ABAQUS软件联合仿真对优化后的类三角形舱体结构进行抗爆炸分析。将类三角形舱体结构放置于模拟的居民楼内,利用TNT进行爆炸试验模拟,得出爆炸期间房间内的压力云图以及单室内各处压力在各时刻的变化曲线。采用压力曲线对家用救生舱进行抗爆分析,得到新型舱体结构的应力与变形云图,从而验证新型家用救生舱满足抗爆性能。最后,对类三角形舱体结构进行热防护性能分析,采用室内升温曲线,分别对舱体的外层、隔热层以及内层进行瞬态热分析,得到各层的温度变化曲线与云图,结合隔热层的结构分析,得出新型隔热结构满足隔热效果的需求。本文对新型家用救生舱从耐压性、自振性、抗震性、抗爆性以及热防护性等方面进行了分析研究,得出家用救生舱在遇到不同突发(如地震、火灾等)状况时舱体的等效应力云图及总变形云图等,验证设计的新型家用救生舱结构的可靠性,对家用救生舱的设计及制造提供理论参考和技术支持,具有较强的科学理论意义。
[Abstract]:On the basis of the study of the existing mine lifesaving cabin and the design idea of the mine lifesaving cabin, the cabin structure of the household lifesaving cabin is designed from the aspects of pressure resistance, self vibration, anti-seismic, anti explosion and thermal protection. At the same time, the whole structure of the hatch is designed. Through the modules of AWE and the structure of the cabin, the structure of the cabin is carried out by ABAQUS. The dynamics simulation is used to verify the rationality and reliability of the new type of hatch and door structure designed. This paper mainly studies the following aspects: first, the whole structure of the new household lifesaving cabin is designed. According to the design idea and summary experience of the mine lifesaving cabin, the residential building of the household lifesaving cabin is considered. A new type of household lifesaving cabin structure, that is, the structure of a new type of family life lifesaving cabin, is put forward, and a new type of hatch with a new locking mechanism is designed on the basis of the existing locking mechanism. Secondly, the statics analysis is carried out on the hatch and the hatch of the new type of household lifesaving cabin, and the new type of hatch is formed. The equivalent stress cloud and total deformation cloud of two kinds of hatch structures are obtained by introducing 0.3MPa load into the ANSYS Workbench, and the structure of the arched hatch structure is introduced into the structure of the arched hatch. Check to find the largest position of the deformation and verify the reliability of the design by checking. Then, through the parameterized modeling of the triangle class and the static simulation, the equivalent stress, the total deformation and the mass of the triangle class are optimized by the Creo. The design variables and the targets are designed. The relationship curve of the function determines the main factors affecting the equivalent stress of the cabin, the main factor of the total deformation and the mass is the length and width of the reinforcement and the thickness of the cabin, and the optimal solution of the structure of the class triangle is found through the DOE optimization method. The acceleration spectrum of a certain earthquake is simulated by the acceleration spectrum load, and the acceleration of the structure is obtained through the total acceleration diagram, the stress and the total deformation diagram, and the deformation and stress are not large. It shows that the optimized structure of the triangle class cabin satisfies the requirements of the earthquake resistance. Then, the AUTODYNA and the ABAQUS software are used to imitate the model. The anti explosion analysis of the optimized triangle hatch structure is carried out. The structure of the class triangle hatch is placed in the simulated residential building, and the explosion test simulation is carried out by TNT to get the pressure cloud in the room and the change curve of the pressure in the single room at all times during the explosion. The stress and deformation cloud chart of the new type of hatch structure are obtained by blasting analysis, and the new type of household lifesaving cabin can be verified to meet the anti explosion performance. Finally, the thermal protection performance of the structure of the class triangle hatch is analyzed. The temperature curve of the indoor temperature is used for the transient thermal analysis of the outer layer, the insulation layer and the inner layer of the hatch, and the temperature change curves of each layer are obtained. In this paper, the new type of household lifesaving cabin is analyzed from the aspects of pressure resistance, self vibration, earthquake resistance, anti explosion and thermal protection, and the cabin of the household lifesaving capsule in the case of different burst (such as earthquake, fire and so on) is obtained. The effect force cloud map and the total deformation cloud chart verify the reliability of the new type of household lifesaving cabin structure designed and provide theoretical reference and technical support for the design and manufacture of the household life lifesaving cabin, which has strong scientific theoretical significance.
【学位授予单位】：青岛科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TB472;X956

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