基于等强度设计原则的车载氧舱加强筋合理化设计  

Rational Design of Reinforcement Ribs for Vehicle-mounted Oxygen Cabin Based on the Principle of Equal-strength Design

作　　者：王若芊 李慧芳[1] 钱才富[1] Wang Ruoqian;Li Huifang;Qian Caifu(College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学机电工程学院,北京100029

出　　处：《化工设备与管道》2023年第5期17-21,共5页Process Equipment & Piping

摘　　要：对方形车载氧舱的加强筋合理设计问题进行研究,提出了基于极限分析的等强度设计方法,即根据极限载荷分析确定强度薄弱区域并设置加强筋,不断重复直至结构满足强度要求。结果表明,和根据工程经验设计的原氧舱加强筋相比,按此方法设置的加强筋重量减少27.64%时,车载氧舱极限载荷值大于工作压力对应的许用极限载荷值,满足了氧舱结构承载要求。研究也表明:在薄壁结构上依据等强度原则逐渐设置和优化加强筋的方法既可以满足强度要求,又能较大程度地减轻加强筋重量,在工程上是可行且合理的。In this paper,a study was conducted on the rational design of reinforcement ribs for vehicle-mounted oxygen cabin,and an equal-strength design method based on limit analysis was proposed,which determines the weak strength area and applies reinforcement ribs based on limit load analysis,and repeats continuously until the structure meets the strength requirements.The results show that compared with the original oxygen cabin reinforcement designed based on experience,when the weight of the reinforcement ribs designed according to this method is reduced by 27.64%,the limit load value of the oxygen cabin is greater than the allowable limit load value corresponding to the working pressure,meeting the load-bearing requirements of the oxygen cabin structure.This study also shows that the method of gradually setting and optimizing reinforcement ribs on thin-walled structures based on the principle of equal-strength can not only meet the strength requirements but also greatly reduce the weight of reinforcement ribs,which is feasible and reasonable in engineering.

关 键 词：车载氧舱 极限载荷 加强筋 等强度设计 拓扑优化 

分 类 号：TH49[机械工程—机械制造及自动化]