摘要
采用铝合金面板-硬质聚氨酯泡沫夹芯的复合式夹层构型,设计了一种用于低温火箭推进剂贮箱的共底结构,其具有轻量化、易于制造、承载/隔热一体化的特点。通过数值模拟手段,对该共底的隔热效果、结构稳定性及热力耦合问题进行分析。结果表明,该共底满足低温液氢/液氧贮箱隔热要求,在0.342 MPa压差下不失稳,单箱打压低于0.5 MPa时材料不失效。此结构的设计分析可为新型低温贮箱共底的设计提供技术支持。
By using a sandwich construction that consists of aluminum alloy panels-rigid polyurethane foam,a common bulkhead was devised for cryogenic launch vehicle tanks.The common bulkhead has the characteristics of lightweight,easy to manufacture,and integrated load bearing/thermal insulation.Based on numerical simulations,thermal insulation effect,structural stability and thermal-mechanical coupling behavior of the common bulkhead were analyzed.The results show that the common bulkhead not only satisfies the thermal insulation requirements of cryogenic tanks for liquid hydrogen and oxygen,but also keeps structural stability under a differential pressure of0.342 MPa and material safety with a pressure of 0.5 MPa.The design and analysis of this structure can provide technical support for the design of new cryogenic tanks with a common bulkhead.
作者
李克诚
杨雷
高东岳
柳敏静
徐新生
武湛君
LI Kecheng;YANG Lei;GAO Dongyue;LIU Minjing;XU Xinsheng;WU Zhanjun(State Key Laboratory of Structural Analysis for Industrial Equipment,School of Aeronautics and Astronautics,Dalian University of Technology,Dalian 116024,China;School of Aeronautics and Astronautics,Sun Yat-Sen University,Guangzhou 510275,China;Department of Engineering Mechanics,Dalian University of Technology,Dalian 116024,China)
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2021年第3期911-919,共9页
Acta Materiae Compositae Sinica
基金
国家重点研发计划(2018YFA0702800)
中央高校基本科研业务费专项资金(DUT19ZD101)
国家自然科学基金(51805068)。
关键词
共底
硬质聚氨酯泡沫
低温贮箱
数值模拟
隔热
common bulkhead
rigid polyurethane foam
cryogenic tank
numerical simulation
thermal insulation
