The invention discloses a negative poisson's ratio cell and a honeycomb structure formed through the cell. The negative poisson's ratio cell comprises six sides, the left side and the right side are arc sides, the upper side and the lower side are long sides, two inner vertical rods exist in the cell, the inner vertical rods are connected with the arc sides on the left and right sides correspondingly, the cell structure is in up and down and left and right symmetrical distribution, the cell and the honeycomb structure are combined to obtain a honeycomb stacking structure with the higher property expression, adjacent rows of cells are connected through a connecting rod, and the two-dimensional and three-dimensional honeycomb structure applied to different application occasions can be obtained. Compared with a traditional structure, during bearing of outer loads by the cell, the vertical rods with the interiors connected with the arc sides can resist deforming of the arc sides, the higher energy absorbing impact resistance and bearing properties can be achieved, the defects that a traditional negative poisson's ratio structure is too large in inner gap, concave corners on the two sides deform to lose stability, and bearing force is poor can be overcome, impact resistance and bearing energy absorbing capacity are more excellent, the structure is simple and effective, and the honeycomb structure designed through the cells has the wider application range.
本发明公开了一种负泊松比胞元及其蜂窝结构,该负泊松比胞元包括六条边,其中左右侧为弧边,上下侧为长边,胞元内部存在两条内竖杆,内竖杆分别与左右侧的弧边相接,胞元结构整体为上下左右对称分布。将胞元与蜂窝结构结合可以得到性能表现更强的蜂窝堆叠结构,相邻列胞元使用连接杆进行连接,得到了可应用于不同应用场景的二维及三维蜂窝结构。相较于传统结构,其在受到外部载荷时,内部与弧边相接的竖杆可抵抗弧边变形,从而实现更高的吸能抗冲击及承载性能。本发明克服了传统负泊松比结构内部空隙过大、两侧凹角变形失稳且承载力差的缺陷,抗冲击及承载吸能能力更优,结构简单有效,使用胞元设计的蜂窝结构具有更加广泛的应用范围。
Negative poisson's ratio cell and honeycomb structure formed through cell
一种负泊松比胞元及其蜂窝结构
2020-09-22
Patent
Electronic Resource
Chinese
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