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首页> 外文会议>AIAA international space planes and hypersonic systems and technologies conference >Thermo-mechanical Analysis and Optimization of Lightweight Corrugated-core Sandwich Integrated Thermal Protection System for Hypersonic Vehicles
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Thermo-mechanical Analysis and Optimization of Lightweight Corrugated-core Sandwich Integrated Thermal Protection System for Hypersonic Vehicles

机译：高超音速车辆轻型波纹芯三明治式集成热保护系统的热力学分析与优化

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摘要

During reentry or long time high-speed flight, hypersonic vehicles suffer both aerodynamic heating and mechanical load which requires integrated thermal protection system (ITPS) to protect. To reduce the effect of the heat short and take full advantage of the potential of the material, some lightening holes are dug in the webs of the conventional corrugated-core sandwich panels. One unit cell of the developed corrugated-core sandwich panels is chosen as the design object, the situation with and without lightening holes and different structural materials are compared, respectively. Some geometric parameters of developed structure are considered as the design variables and their effects on the structure response are analyzed. It is found that with the holes being dug in the webs, the stress of the loading bearing structure increases. After optimization for three significant parameters, the weight of the final design is reduced by 16.6% compared to the conventional model.
机译：在重返飞机或长时间高速飞行期间，高超音速飞行器会遭受空气动力加热和机械负载的影响，这需要集成的热保护系统（ITPS）进行保护。为了减少热短路的影响并充分利用材料的潜力，在常规瓦楞芯夹心板的腹板上开了一些减轻孔。以开发的瓦楞芯夹芯板的一个单元为设计对象，分别比较了有无减亮孔和不同结构材料的情况。将已开发结构的一些几何参数视为设计变量，并分析了它们对结构响应的影响。发现在腹板上挖出孔时，承载结构的应力增加。在对三个重要参数进行优化之后，与常规模型相比，最终设计的权重降低了16.6％。

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