Bionic composite energy absorption structure with impact angle adaptability

Abstract

A bionic composite energy absorption structure with impact angle adaptability comprises micro-cellular energy absorbers which are sequentially arranged in the X direction and the Y direction, whereineach micro-cellular energy absorber comprises a first regular hexagonal prism energy absorber, a second regular hexagonal prism energy absorber and a V-shaped connecting arm. The second regular hexagonal prism energy absorber is arranged in the first regular hexagonal prism energy absorber, and two opposite side edges of the second regular hexagonal prism energy absorber and two opposite side edges of the first regular hexagonal prism energy absorber are located on the same straight line; every two V-shaped connecting arms in the twelve V-shaped connecting arms form a group, one ends of everytwo V-shaped connecting arms are fixed to the side edge of the second regular hexagonal prism energy absorber after being in butt joint, the other ends of the two V-shaped connecting arms are fixed tothe two side faces of the first regular hexagonal prism energy absorber respectively, and six regular hexagonal prism reverse resistance energy absorption units are formed; a hexagonal negative poisson ratio energy absorption unit with the two sides concaved inwards is arranged between every two adjacent regular hexagonal prism reverse resistance energy absorption units. The structure has excellent energy absorption performance under the working conditions of axial and large-angle collision.

Description

technical field [0001] The invention belongs to the technical field of energy-absorbing structures for automobiles, in particular to a bionic composite energy-absorbing structure with impact angle adaptability. Background technique [0002] With the increase of car ownership, the probability of car collision accidents will increase. In order to reduce the occurrence of accidents, active safety and passive safety measures are generally adopted. Active safety is to predict the occurrence of collisions through intelligent assisted driving strategies, so as to adjust the motion state of the car in time. However, active safety technology is affected by many factors such as hardware, algorithm robustness, and driving environment, so passive safety is still an important line of defense to protect driver safety, that is, to reduce the impact on vehicles and drivers by designing a reasonable car structure. s damage. [0003] At present, the design of anti-collision structures is m...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a bionic composite energy-absorbing structure with adaptability to the impact angle to solve the technical problem that the existing energy-absorbing structure has obvious anisotropy and cannot take into account the energy-absorbing properties of axial and large-angle impacts at the same time

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