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增材制造的五模超材料在钠/因科镍718热管中的应用。

Application of Additively Manufactured Pentamode Metamaterials in Sodium/Inconel 718 Heat Pipes.

作者信息

Hu Longfei, Shi Ketian, Luo Xiaoguang, Yu Jijun, Ai Bangcheng, Liu Chao

机构信息

Laboratory of Aero-Thermal Protection Technology for Aerospace Vehicles, China Academy of Aerospace Aerodynamics, Beijing 100074, China.

出版信息

Materials (Basel). 2021 Jun 2;14(11):3016. doi: 10.3390/ma14113016.

DOI:10.3390/ma14113016
PMID:34199372
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8199588/
Abstract

In this study, pentamode metamaterials were proposed for thermal stress accommodation of alkali metal heat pipes. Sodium/Inconel 718 heat pipes with and without pentamode metamaterial reinforcement were designed and fabricated. Then, these heat pipes were characterized by startup tests and thermal response simulations. It was found that pentamode metamaterial reinforcement did not affect the startup properties of sodium/Inconel 718 heat pipes. At 650-950 °C heating, there was a successful startup of heat pipes with and without pentamode metamaterial reinforcement, displaying uniform temperature distributions. A further simulation indicated that pentamode metamaterials could accommodate thermal stresses in sodium/Inconel 718 heat pipes. With pentamode metamaterial reinforcement, stresses in the heat pipes decreased from 12.9-62.1 to 10.2-52.4 MPa. As a result, sodium/Inconel 718 heat pipes could be used more confidently. This work was instructive for the engineering application of alkali metal heat pipes.

摘要

在本研究中，提出了五模超材料用于碱金属热管的热应力调节。设计并制造了有和没有五模超材料增强的钠/因科镍718热管。然后，通过启动测试和热响应模拟对这些热管进行了表征。结果发现，五模超材料增强并不影响钠/因科镍718热管的启动特性。在650 - 950℃加热时，有和没有五模超材料增强的热管均成功启动，温度分布均匀。进一步的模拟表明，五模超材料可以调节钠/因科镍718热管中的热应力。有了五模超材料增强，热管中的应力从12.9 - 62.1MPa降低到10.2 - 52.4MPa。因此，钠/因科镍718热管可以更可靠地使用。这项工作对碱金属热管的工程应用具有指导意义。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90f7/8199588/b20e341da2bc/materials-14-03016-g013.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90f7/8199588/94fbdf7f6dda/materials-14-03016-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90f7/8199588/39643f0b5c7f/materials-14-03016-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/90f7/8199588/9e37515bd25c/materials-14-03016-g010.jpg
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