The invention discloses a novel three-dimensional chiral negative Poisson ratio multi-cell energy absorption structure. The structure comprises a plurality of energy absorption layers which are stacked in sequence, wherein the energy absorption layer comprises a plurality of hexagonal chiral structure unit cells; each hexagonal chiral structure unit cell comprises a central circular ring, first tosixth connecting rods; the rotation directions of the hexagonal chiral structure unit cells in the energy absorption layer are the same, and the first to sixth connecting rods of the adjacent hexagonal chiral structure unit cells are correspondingly connected to form an array; the hexagonal chiral structure unit cells of the adjacent energy absorption layers are in one-to-one correspondence and opposite in rotation direction, and interlayer spiral supporting structures are arranged between the hexagonal chiral structure unit cells corresponding to the adjacent energy absorption layers. By means of stacking of the micro structures, elastic displacement of the structure before reaching the yield limit is improved to a great extent, initial impact force is absorbed by means of large displacement, residual impact is absorbed by means of large counter force, and the structure has great advantages in absorption of centralized, repeated and small-magnitude impact energy.
本发明公开了一种新型三维手性负泊松比多胞吸能结构,包含若干依次层叠的吸能层;吸能层包含若干六边形手性结构单胞;六边形手性结构单胞包含中心圆环以及第一至第六连接杆;吸能层中六边形手性结构单胞的旋向相同,且相邻六边形手性结构单胞的第一至第六连接杆对应相连、形成阵列;相邻吸能层的六边形手性结构单胞的一一对应且旋向相反,相邻吸能层对应六边形手性结构单胞之间均设有层间螺旋支撑结构。本发明通过微小结构的层叠,在很大程度上提高结构在达到屈服极限前的弹性位移,利用较大的位移吸收初始冲击力,利用较大的反力吸收残余冲击,对于集中、多次、小量级冲击能量的吸收具有较大的优势。
Novel three-dimensional chiral negative Poisson ratio multi-cell energy absorption structure
一种新型三维手性负泊松比多胞吸能结构
2020-10-09
Patent
Electronic Resource
Chinese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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