A biomimetic composite energy-absorbing structure with impact angle adaptability

Abstract

A bionic composite energy-absorbing structure with adaptability to impact angles, including micro-cell energy-absorbing bodies arranged in sequence along the X and Y directions, the micro-cell energy-absorbing bodies include a first regular hexagonal prism energy-absorbing body, a second regular hexagonal prism Energy absorber, V-shaped connecting arm; the second regular hexagonal prism energy absorber is arranged inside the first regular hexagonal prism energy absorber, and the two side edges of the second regular hexagonal prism energy absorber are opposite to the first regular hexagonal prism energy absorber The two side edges are on the same straight line; every two V-shaped connecting arms in the 12 V-shaped connecting arms form a group, and one end of each two V-shaped connecting arms is docked and fixed on the second regular hexagonal prism energy-absorbing body On the side edges of the two V-shaped connecting arms, the other ends of the two V-shaped connecting arms are respectively fixed on the two sides of the first regular hexagonal prism energy-absorbing body, forming six regular hexagonal prism anti-resistance energy-absorbing units, and two adjacent regular hexagonal prism anti-resistance energy-absorbing units There are hexagonal negative Poisson's ratio energy-absorbing units concave on both sides between the units. The structure has excellent energy absorption performance in both axial and large-angle collision conditions.

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

Images