The invention relates to a circular tube filled non-positive Poisson's ratio buffer energy absorption structure which comprises circular tube cell elements and a substrate, the substrate comprises anupper substrate, a lower substrate and a lateral arc substrate, wherein the upper substrate, the lower substrate and the lateral arc substrate are connected end to end to form a closed structure withnegative Poisson ratio characteristics, and the shape of the lateral arc substrate is determined in an iterative mode; the circular tube cell elements are arranged in the substrate, and the number ofn1 is determined according to the n1[pi]D2L1<1; the circular tube cell elements are horizontally arranged in the central area of the substrate, the circular tube cell elements are arranged layer by layer in an arithmetic progression manner above and below the layer, and the tolerance is 1 until the circular tube cell elements are attached to the upper substrate and the lower substrate; the contactareas with the circular tube cell elements are fixedly connected with each other; and all the circular tube cell elements are not in contact with the lateral arc substrate. The structure has the zeroPoisson's ratio or negative Poisson's ratio effect, the single structure is not assembled, the hierarchical crushing force can be obtained, and impact overload can be reduced conveniently.
本发明涉及一种圆管填充的非正泊松比缓冲吸能结构,包括圆管胞元及基板,基板包括上基板、下基板和侧向圆弧基板,上基板、下基板和侧向圆弧基板首尾相接,围成具有负泊松比特性的封闭结构,侧向圆弧基板通过迭代方式确定其形状;圆管胞元置于基板中,根据确定n的个数;在基板中心区域水平布置圆管胞元,在该层上下,分别按照等差数列方式逐层递增布置圆管胞元,公差为1,直至与上基板、下基板贴合为止;与圆管胞元的接触区域均相互固定连接;所有圆管胞元与侧向圆弧基板均不接触。本发明结构具备零泊松比或负泊松比效应,单个结构不装配即可得到层级的压溃力,便于降低冲击过载。
Circular tube filled non-positive Poisson's ratio buffer energy absorption structure
一种圆管填充的非正泊松比缓冲吸能结构
2020-04-17
Patent
Electronic Resource
Chinese
IPC: | B64G Raumfahrt , COSMONAUTICS |
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