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工程力学  2013 

用于自适应进气道的扁薄球壳双稳态特性分析

DOI: 10.6052/j.issn.1000-4750.2012.07.0482, PP. 264-271

Keywords: 主动变形,自适应鼓包,进气道,扁薄球壳,双稳态构型

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Abstract:

自适应进气道通过主动控制唇口和内管道的结构形状,能够调节进气道的捕获面积和喉道面积,从而提升战斗机在宽速域内的进气道性能。鼓包进气道是一种先进的进气道,但是鼓包面形状不可调节,限制了其在非设计点的性能。该文针对该问题,提出利用扁薄球壳的双稳态构型调节鼓包面形状,从而改善进气道在不同速度下的使用性能。研究了铰支边界的圆底扁薄球壳存在双稳态构型需要的条件,分析了加载方式和加载位置对壳体双稳态特性的影响,并给出稳态构型转换时壳体结构参数与驱动载荷、加载行程以及结构内应力的关系,为扁薄球壳双稳态构型的形状控制以及在自适应进气道上的应用提供设计参考。

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