Bionic two-dimensional, three-dimensional and three-dimensional buffer energy absorption structure, buffer energy absorber and method

Abstract

The invention discloses a bionic two-dimensional, three-dimensional and three-dimensional buffer energy absorption structure, a buffer energy absorber and a method, and belongs to the field of buffer energy absorption. The basic bionic two-dimensional buffering and energy absorbing structure is characterized in that an inward-concave hexagonal two-dimensional structure is composed of four bevel edge units with the length being L and two vertical edge units with the length being H, and the inward-concave hexagonal two-dimensional structure is in a bowknot shape; the symmetry axis of the concave hexagon is called as the central axis of the two-dimensional structure; wherein the included angle theta between the bevel edge unit and the vertical edge unit is greater than or equal to 30 degrees and less than 90 degrees, and H is greater than 2Lcos theta; the micromorphology of the vertical edge units and the bevel edge units is of a bent filiform structure. The invention has the characteristics of good performance and reusability.

Description

technical field [0001] The invention relates to the field of aerospace reusable buffer energy absorption, and discloses a bionic two-dimensional, three-dimensional, three-dimensional buffer energy absorption structure, a buffer energy absorber and a method. Background technique [0002] The reusable buffer energy-absorbing structure is an effective guarantee for improving resource utilization, especially in the process of spacecraft landing, corresponding work steps are required to absorb energy, reduce shock loads, and reduce structural vibrations to avoid affecting the spacecraft. The traditional buffer unit is mainly based on the aluminum honeycomb structure. During the landing process, the configuration of the aluminum honeycomb structure is sacrificed to produce plastic deformation to absorb energy, thereby ensuring the safe landing of the spacecraft. This landing method is limited to single use and absorbs energy. Once the functional structure is destroyed, it cannot b...

AI Technical Summary

Problems solved by technology

The traditional buffer unit is mainly based on aluminum honeycomb structure. During the landing process, the configuration of the aluminum honeycomb structure is sacrificed to make it plastically deformed to absorb energy, thereby ensuring the safe landing of the spacecraft. This landing method is limited to a single use, absorbing Once the functional structure is damaged, it cannot be restored, so it cannot achieve reusable functions

On the other hand, the aluminum honeycomb structure takes the regular hexagonal shape of the natural honeycomb as the main configuration. Although this traditional structural unit has a good energy-absorbing effect, there is still a large gap in the configuration design of the energy-absorbing structure. Room for improvement

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