Anti-chiral structure, energy-absorbing buffer structure and vehicle body

Abstract

The invention discloses an anti-chiral structure, an energy-absorbing buffer structure and a vehicle body. The anti-chiral unit has a rotating negative Poisson's ratio structure, a stress is conductedon pitch circles through ligaments in a bearing process, so that the pitch circles have a rotating trend, meanwhile, the ligaments are rolled up to form a negative Poisson's ratio state with reducedcompression cross sections and increased stretching cross sections. After ligament deformation is finished, the pitch circles are extruded against each other, at this time, a second deformation stageis entered, three anti-chiral units are located in three mutually perpendicular planes in a three-dimensional coordinate, and the three pitch circles are intersected mutually and connected to form sixconnection points, so that when a hybrid chiral structure impacted, the three pitch circles are not prone to dislocation or deformation, and the overall structure is stable, so that the bearing capacity and the energy absorption capacity of the anti-chiral structure are strong.

Description

technical field [0001] The invention relates to a high-performance engineering structure, in particular to an antichiral structure, an energy-absorbing buffer structure, and an automobile body. Background technique [0002] The main feature of the antichiral structure is that it has a rotationally negative Poisson's ratio structure. [0003] like figure 1 As shown, the two pitch circles on the same ligament are located on the same side of the ligament, belonging to the antichiral structure, which is formed by sequentially connecting four antichiral units, and the antichiral structure is ring-shaped. [0004] However, in the existing backchiral structure, two adjacent units are only connected by two ligaments, which are easily misaligned or deformed when subjected to external forces, and the structural stability is poor, resulting in poor bearing capacity and energy absorption capacity. . Contents of the invention [0005] The invention provides an anti-chiral structure,...

AI Technical Summary

Problems solved by technology

[0004] However, in the existing backchiral structure, two adjacent units are only connected by two ligaments, which are easily misaligned or deformed when subjected to external forces, and the structural stability is poor, resulting in poor bearing capacity and energy absorption capacity.

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