轴压下圆柱加筋壳的热屈曲  

Thermal Buckling of Stiffened Cylinders under Axial Compression

作　　者：张东 穆京京 蒋亦幪 余君才 刘冬欢[3] 梁伟[4] ZHANG Dong;MU Jing-jing;JIANG Yi-meng;YU Jun-cai;LIU dong-huan;LIANG Wei(Beijing Institute of Aerospace System Engineering,Beijing 100076;Department of Research and Development,Aerospace Science and Technology Corporation,Beijing 100048;School of Mathematics and Science,Beijing University of Science and Technology,Beijing 100083;School of Aeronautic Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191)

机构地区：[1]北京宇航系统工程研究所,北京100076 [2]中国航天科技集团有限公司研究发展部,北京100048 [3]北京科技大学数理学院,北京100083 [4]北京航空航天大学航空科学与工程学院,北京100191

出　　处：《强度与环境》2019年第6期30-35,共6页Structure & Environment Engineering

基　　金：国家自然基金委/航天联合制造基金(U1837207);军品配套项目（JPPT-2019-007)

摘　　要：圆柱加筋壳轴压和温度载荷下的稳定性是高速航天结构设计和安全评估中的关键问题。本文针对简支边界条件下纵横加筋圆柱壳在轴压和温度载荷联合作用下的屈曲问题进行了理论分析,考虑了加筋条的偏心效应以及材料属性的温度相关性,给出了临界屈曲载荷和温度载荷的解析表达式。测试算例验证了本文结果的可靠性,本文结果为研究各种几何和材料参数对轴压纵横加筋圆柱壳屈曲载荷的影响以及结构优化设计提供了重要的理论参考。Stability of stiffened cylinders under combined axial compression and thermal load is one of the key problems in high speed aerospace structure analysis and safety evaluation.Theoretical analysis is performed in the present paper to investigate the buckling problem of stringer and ring stiffened cylinder under combined axial compression and thermal load,with the assumption of simply supported boundary condition and consideration of effect of stiffener eccentricity and tempearture-dependent material properties,analytical expression for the critical buckling load of the problem is given.Numerical examples show the feasibility and reliability of the present method,and the present results could be an important reference for the investigations on effect of geometric and material properties to the buckling load of stiffened cylinders,and optimization design of such structures.

关 键 词：热屈曲 纵横加筋 圆柱壳 轴压 

分 类 号：V414[航空宇航科学与技术—航空宇航推进理论与工程]