基于有限元仿真的高海拔低压实验舱强度分析研究  

Strength Analysis and Improvement of the High Altitude Hypobaric Experimental Cabin Based on Finite Element Simulation

作　　者：白伟 王敬意 刘焕领 宋文倩 BAI Wei;WANG Jingyi;LIU Huanling;SONG Wenqian(Tianjin Internal Combustion Engine Research Institute(Tianjin Motorcycle Technical Center),Tianjin,300072,China;Tianjin University)

机构地区：[1]天津内燃机研究所(天津摩托车技术中心),天津300072 [2]天津大学

出　　处：《小型内燃机与车辆技术》2024年第5期44-48,共5页Small Internal Combustion Engine and Vehicle Technique

基　　金：国家重点研发计划(2020YFC1512301)。

摘　　要：低压实验舱在进行模拟高海拔等极端条件下的实验时需要承受较大的外部气压和内部气体负荷,因此其结构设计与强度校核至关重要。按照需求对舱体结构尺寸进行了设计,运用有限元方法建立舱内低压环境的数学模型,校核实验舱在内外压差情况下的强度性能,在此基础上对实验舱结构进行改进优化,进一步进行强度分析,验证其改进效果。结果表明,设计改进后的实验舱结构应力均小于材料的屈服极限,满足强度要求。The hypobaric experimental cabin needs to withstand significant external pressure and internal gas loads when simulating extreme conditions such as high altitude,so its structural design and strength verification are crucial.In this paper,the structural dimension of the cabin is designed according to the requirements.The mathematical model of the hypobaric environment in the cabin is established by the finite element analysis method,and the strength analysis of the experimental cabin under the condition of internal and external pressure difference.On this basis,the structure of the experimental cabin is improved,and further strength analysis is carried out to verify the improvement effect,so that the strength can meet the safety requirements.

关 键 词：低压实验舱 结构设计 有限元仿真 强度分析 结构改进 

分 类 号：TK417.5[动力工程及工程热物理—动力机械及工程]