A shock-resistant energy-absorbing structure
An energy absorption and absorption structure technology, applied in elastic shock absorbers, springs/shock absorbers, shock absorbers, etc., can solve the problems of limited specific energy absorption capacity, limited energy absorption capacity, and short crushing distance, etc. The effect of improving specific energy absorption capacity, increasing plastic deformation energy, and increasing quantity
Active Publication Date: 2020-02-07
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
However, the "sandwich" structure has a limited crushing distance due to its geometrical characteristics, and the deformation and crushing mode of the core tube is single. It mainly relies on a limited number of plastic hinges to generate plastic deformation to absorb energy, and the specific energy absorption capacity is still limited.
The "sandwich" impact-resistant energy-absorbing structure known to have the best energy-absorbing effect is the article "Nested tube system applicable to protective structures" published in "International Journal of Impact Engineering" in 2017 by Z.L Yu, P.Xue and Z.Chen Against blast shock", its research structure still has the problems of single crushing mode, short crushing distance, and limited energy absorption capacity
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Embodiment 1
[0020] An anti-impact energy absorbing structure, comprising: an upper cover plate 1, a middle core tube 2, a first hollow tube 3, a second hollow tube 4, a third hollow tube 5 and a lower cover plate 6; the middle core tube 2 is located on the upper cover Between the plate 1 and the lower cladding plate 6; the first hollow tube 3, the second hollow tube 4 and the third hollow tube 5 are located in the middle of the middle core tube 2; that is, the middle core tube of the existing "sandwich" energy absorbing structure is added Three hollow tubes; the overall structure is installed as figure 1 Shown.
[0021] Connection relationship:
[0022] The upper cladding plate 1 and the lower cladding plate 6 are steel structures with a size of 40*20*2mm. The middle core tube 2 has a length of 20 mm, an outer diameter of 40 mm, and a thickness of 1.6 mm. The first hollow tube 3, the second hollow tube 4 and the third hollow tube are all 1.2mm thick, 20mm in length, and 14.7mm in outer diame...
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The invention relates to an impact-resistant energy absorption structure, and belongs to the field of protection. According to the structure, three 120-degree uniformly-distributed inner tubes are arranged in a sandwich-shaped middle core tube and are arranged according to a certain direction; and under the impact action, the middle core tube firstly collapses, then the upper inner tube generateslateral slippage and deformation, under the mutual actions of the middle core tube and the three inner tubes, a coating type three-tube transverse side-by-side state is formed and finally collapse occurs, the structure provides a novel combined collapse mode, and the energy absorption capacity of the structure can be improved.
Description
Technical field [0001] The invention relates to an impact-resistant energy absorption structure, which belongs to the field of protection. Background technique [0002] With the development of society, the public is increasingly calling for the safety of individuals and public facilities. The legal sanctions for injuries caused by mechanical structure failure to personnel are also increasingly strict. Since the 1970s, more and more attention has been paid to the research of energy absorbing structures and materials used to dissipate collisions (or caused by strong dynamic loads) to generate kinetic energy. The energy absorbing structure is mainly used to improve the crashworthiness of vehicles, the safety protection ability of highways, the protection ability of industrial accidents, personal safety protection and structural material packaging. [0003] The "sandwich" composite energy absorbing structure composed of the middle core tube structure and the upper and lower cladding ...
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IPC IPC(8): F16F7/12
CPCF16F7/128
Inventor 王成徐斌徐文龙栗皓于洪坤
Owner BEIJING INSTITUTE OF TECHNOLOGYGY