Fabricated self-locking multi-cell energy absorber

Abstract

The invention belongs to the field of energy absorbing in passive structural safety protection, and discloses a fabricated self-locking multi-cell energy absorber. The fabricated self-locking multi-cell energy absorber comprises two sets of thin-wall pipes, and the structural sizes of the thin-wall pipes in each set are the same; openings are formed in the side faces of all the thin-wall pipes, and thus the thin-wall pipes are each of a non-closed structure; the two open thin-wall pipes in the first set are parallelly arranged, and the openings of the two open thin-wall pipes in the first setare opposite; the two thin-wall pipes in the second set are parallelly arranged, and the openings of the two open thin-wall pipes in the second set are back on to each other; the second set is nestedin the first set orthogonally, four empty cells are formed, and meanwhile each face of the energy absorber is made to comprise two layers of pipe walls of the corresponding thin-wall pipe; and the second set and the first set mutually penetrate through the openings of each other to achieve splicing of the two sets to form a self-locking structure, and each face of the structure comprises the two corresponding layers of pipe walls. Through the fabricated self-locking multi-cell energy absorber, the provided energy absorber is simple in structure, high in specific energy absorption rate and lowin production cost.

Description

technical field [0001] The invention belongs to the field of energy absorption in structural passive safety protection, and more specifically relates to an assembled self-locking multicellular energy absorber. Background technique [0002] Energy-absorbing structures are widely used in various fields such as automobiles, ships, and aerospace, as the main components for dissipating impact kinetic energy in the event of a collision. Designing an energy absorber with good performance has great practical significance for protecting people's life and property, saving energy, and promoting environmental protection. [0003] In the current car design, the bumper system installed at the front and rear of the car is usually used to ensure that the structural frame of the car is not seriously damaged under low-speed impact loads, so as to ensure the safety of the occupants in the car and the main structure of the car. In order to absorb the kinetic energy during impact as much as pos...

AI Technical Summary

Problems solved by technology

[0006] In view of the above defects or improvement needs of the prior art, the present invention provides an assembled self-locking multicellular energy absorber, which uses two sets of open thin-walled tubes to assemble to form a self-locking structure, thereby solving the problem of energy absorber Technical problems of high manufacturing, maintenance and installation costs and low energy absorption efficiency

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