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弹箭与制导学报 >

2024 , Vol. 44 >Issue 6: 1 - 12

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2024.06.001

316L不锈钢蜂窝夹芯结构的抗爆性能研究与优化

  • 黄静泊 1 ,
  • 李小帅 1 ,
  • 谢晶 1, 2 ,
  • 王扬卫 3
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  • 1 北京理工大学爆炸科学与安全防护全国重点实验室,北京 100081
  • 2 北京理工大学唐山研究院,河北 唐山 063000
  • 3 北京理工大学冲击环境材料技术国家级重点实验室,北京 100081
谢晶(1985—),女,副教授,工学博士,研究方向:冲击生物力学。

黄静泊(2001—),男,硕士研究生,研究方向:冲击动力学。

收稿日期: 2023-09-23

  网络出版日期: 2025-02-10

基金资助

冲击环境材料技术重点实验室基金项目(614902230107)

国家自然科学基金面上项目(12072038)

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Study and Optimization on Blast Resistance of 316L Stainless Steel Honeycomb Sandwich Structures

  • HUANG Jingbo 1 ,
  • LI Xiaoshuai 1 ,
  • XIE Jing 1, 2 ,
  • WANG Yangwei 3
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  • 1 Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
  • 2 Tangshan Research Institute, Beijing Institute of Technology, Tangshan 063000,Hebei, China
  • 3 National Key Laboratory of Science and Technology on Materials under Shock and Impact,Beijing Institute of Technology, Beijing 100081,China

Received date: 2023-09-23

  Online published: 2025-02-10

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摘要

In order to investigate the blast resistance of a 316L stainless steel honeycomb sandwich structure, a honeycomb sandwich structure was designed and fabricated using 316L stainless steel powder by selective laser melting (SLM). Concurrently, solid panels of equivalent surface density were produced by this method and constituted the control group. The mechanical behavior of the structure under near-field static explosion load is obtained through static explosion experiments and LS-DYNA simulation experiments, and the propagation mode of the stress wave within it is investigated in order to elucidate the underlying anti-explosion principle. Moreover, optistruct is utilized to optimize the topology and structure of the structure, with the objective of enhancing its blast resistance. The findings indicate that the backplate deflection of the porous sandwich structure is diminished by 13.2% in comparison to that of the plate with isoplanar density, thereby enhancing blast resistance. The established numerical model of fluid-solid coupling is capable of describing the three phases of the static explosion experiment, namely the shock wave propagation phase, the fluid-solid coupling phase, and the inertia phase. The explosion experiment yielded definitive results at the center of the target plate, thereby demonstrating that the "川" crack is caused by residual core layer extrusion. Moreover, the core layer deformation failure mechanism for the honeycomb panel was observed to manifest as in-plane stretching and tearing. The optistruct optimization results demonstrate the formation of a triangular skeleton and circular holes, alternating with corrugated plates. The structure, optimized for a corrugated core target plate, displays enhanced resilience in comparison to the optimization of a traditional honeycomb sandwich panel. The explosion load backboard deflection exhibited a 25.4% reduction, the peak pressure behind the plate demonstrated a 17.6% reduction, and the blast resistance was significantly enhanced. In comparison to honeycomb panels, the circular hole structure has been demonstrated to reduce the backplane deflection by 38.1%, while the triangular hole structure has been shown to reduce the peak pressure behind the plate by 22.4%.

关键词： 316L 不锈钢; 金属多孔夹芯结构; 抗爆性能; 抗爆机理; 结构优化; 选区激光熔融

本文引用格式

黄静泊 , 李小帅 , 谢晶 , 王扬卫 . 316L不锈钢蜂窝夹芯结构的抗爆性能研究与优化[J]. 弹箭与制导学报, 2024 , 44(6) : 1 -12 . DOI: 10.15892/j.cnki.djzdxb.2024.06.001

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