孙德强,安兴,谭一,孙玉瑾,郝静,李彬.正多边形外接填充圆形蜂窝异面动态缓冲性能[J].包装工程,2021,42(1):116-123.
SUN De-qiang,AN Xing,TAN Yi,SUN Yu-jin,HAO Jing,LI Bin.Out-of-plane Dynamic Cushioning Performance of Circular Honeycomb Filled with Regular Polygons[J].Packaging Engineering,2021,42(1):116-123. |
| 正多边形外接填充圆形蜂窝异面动态缓冲性能 |
| Out-of-plane Dynamic Cushioning Performance of Circular Honeycomb Filled with Regular Polygons |
| 投稿时间：2020-07-08 |
| DOI：10.19554/j.cnki.1001-3563.2021.01.016 |
| 中文关键词: 正多边形 圆形蜂窝 有限元分析 异面冲击 缓冲性能 |
| 英文关键词: regular polygon circular honeycomb finite element analysis dynamic impact cushioning performance |
| 基金项目:国家自然科学基金(51575327);陕西省教育厅重点实验室及基地项目(16JS014);陕西省教育厅 2014 陕西本科高校专业综合改革试点子项目(陕教高[2014]16号) |
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| 中文摘要: |
| 目的 为了研究正多边形外接填充圆形蜂窝的缓冲性能，建立不同正多边形外接填充圆形蜂窝的冲击有限元模型，分析研究多边形填充对圆形蜂窝缓冲性能的影响。方法 利用Ansys/LS-DYNA建立正三、四、五、六边形外接填充圆形蜂窝的有限元分析模型，用六水平等级法评价分析各有限元模型在异面方向不同冲击速度下的力学性能、变形模式和能量吸收特性。结果 正多边形与圆形蜂窝产生了较强的耦合响应，使组合结构的接触载荷和总能量吸收值均大于两者单独冲击数值之和;正六边形外接填充圆形蜂窝结构的六水平等级评价均为A，优于其他组合类型，且在不同冲击速度下不同正多边形外接填充圆形蜂窝的评价结果大致相同;正六边形外接蜂窝结构在冲击载荷下存在3种变形模式，随冲击速度的变化而变化，蜂窝壁厚对其的影响较小。随着冲击速度和壁厚的增大，动态峰应力、密实化总能量吸收和比吸能均有一定程度的提升。结论 在耦合效应和动态冲击载荷的综合作用下，正六边形外接填充圆形蜂窝结构的动态力学性能较其他3种结构更为优异;随着蜂窝壁厚和冲击速度的增加，正多边形外接填充圆形蜂窝结构的承载能力和吸能能力都得到增强。 |
| 英文摘要: |
| The work aims to study the cushioning performance of circular honeycomb filled with regular polygons, establish the impact finite element models of circular honeycombs filled with different regular polygons and analyze the influence of regular polygons filling on cushioning performance of circular honeycomb. Ansys/LS-DYNA was used to establish the finite element analysis models of circular honeycombs filled with regular trilateral, quadrilateral, pentagon and hexagon and the six-level grade method was used to evaluate and analyze their mechanical properties, deformation modes and energy absorption characteristics under different impact velocities in the axial direction. The regular polygon and the circular honeycomb had a strong coupling response, so that the contacting load and the total energy absorption value of the combined structure were greater than the sum of the two individual impact values. The six-level grade of the circular honeycomb structure filled with regular hexagon was A, which was better than that of other combination types and the evaluation results of circular honeycombs filled with different regular polygons at different impact speeds were the same roughly. There were three deformation modes of the honeycomb filled with regular hexagons under impact load, which was changed with the impact velocity, but slightly affected by honeycomb wall thickness. As the impact velocity and thickness increased, the dynamic peak stress, total energy absorption and specific energy absorption were all improved to a certain extent. Under the combined effect of coupling effect and dynamic impact load, the dynamic mechanical properties of the circular honeycomb filled with regular hexagon are more excellent than the other three structures. As the thickness of the honeycomb and impact velocity increase, the load-bearing capacity and energy-absorbing capacity of the circular honeycomb filled with regular polygons have been enhanced. |
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