温度边界条件对平面壁板热屈曲行为的影响研究OA
Study on the Influence of Temperature Boundary Conditions on the Buckling Phenomenon of Panels
以高超声速飞行器为代表的高速航空器在飞行过程中其壁板结构易发生屈曲失稳,这种屈曲失稳与热效应紧密相关,因此温度边界条件会对结构的屈曲行为产生影响.本文通过一套自主设计的试验夹具,结合基于热力顺序耦合方式的静力弧长算法,研究了不同温度边界条件对平板屈曲行为的影响.结果表明,边界温度会显著影响极限屈曲载荷,且影响程度与力学边界条件相关;当边界与域内存在负温差(边界温度低于域内温度)时,温度影响的敏感程度更高;相比之下,边界温度影响区的宽度对壁板屈曲行…查看全部>>
High-speed aircraft represented by hypersonic aircraft is prone to buckling instability of the panel structure during flight,which is closely related to the thermal effect,thus the temperature boundary conditions will have an impact on the buckling behavior of the structure.In this paper,the influence of different temperature boundary conditions on the buckling behavior of the panel was studied by a set of self-designed test fixture and the static arc length…查看全部>>
丁泽航;张天寅;韩先洪
上海交通大学,上海 200030上海交通大学,上海 200030上海交通大学,上海 200030
平板屈曲热力耦合边界弧长法边界温度极限屈曲载荷
panel bucklingthermodynamic coupling boundaryarc length methodboundary temperatureultimate buckling load
《航空科学技术》 2024 (8)
56-63,8
航空科学基金(20200009057004) Aeronautical Science Foundation of China(20200009057004)
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