CN105257756A - Direct-plug type energy absorption assembly of thin-walled tube - Google Patents
Direct-plug type energy absorption assembly of thin-walled tube Download PDFInfo
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- CN105257756A CN105257756A CN201510673460.5A CN201510673460A CN105257756A CN 105257756 A CN105257756 A CN 105257756A CN 201510673460 A CN201510673460 A CN 201510673460A CN 105257756 A CN105257756 A CN 105257756A
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- walled tube
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Abstract
The invention belongs to energy absorption accessories of thin-walled tubes in anti-collision structures of vehicles, and particularly relates to a direct-plug type energy absorption assembly of a thin-walled tube. The direct-plug type energy absorption assembly of the thin-walled tube comprises four energy absorption elements and fixing elements. Each energy absorption element is a multilayer composite round tube, and tube wall materials of adjacent layers of each multilayer composite round tube are mutually orthogonal. The two ends of each energy absorption element are fixed to the fixing elements, the other side of each fixing element is provided with a petal-shaped opening, and the energy absorption elements and the fixing elements are mounted in the thin-walled tube. Through the direct-plug type energy absorption assembly of the thin-walled tube, the bearing capacity and the specific energy absorption rate of unit mass of the thin-walled tube are increased, a load uniformity coefficient is reduced, local buckling and damage are reduced, and plastic deformation is evenly distributed on more sections. Meanwhile, the direct-plug type energy absorption assembly of the thin-walled tube is stable, reliable and capable of coping with normal loads of different portions and directions, and external shock kinetic energy can be irreversibly dissipated through plastic deformation in a stable damage mode and in an adjustable way.
Description
Technical field
The invention belongs to the energy-absorbing auxiliary of thin-wall pipe in collision prevention of vehicle structure, be particularly related to the energy-absorbing assembly of straight plug thin-wall pipe.
Background technique
Thin-wall pipe is widely used in the fields such as automobile, aviation and boats and ships as a kind of crashproof component mainly.Under normal direction Impact Load, generation is out of shape with the bending ductility of scope, with this impact kinetic energy that dissipates by thin-wall pipe largely.Conventional thin-wall pipe cross section is circular and square.It is low that the ratio of square tube inhales duty ratio pipe, but processing and easy for installation.Two kinds of thin-wall pipes respectively have quality in crashworthiness design.But excessive plastic deformation can produce flat cross section, make pipe fitting lose bearing capacity gradually, cause structural breakdown.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of high thin-wall pipe energy-absorbing assembly than energy-absorbing rate, reduce the fasciation of thin-wall pipe under normal direction percussion and cripling.
For achieving the above object, the technical solution used in the present invention is:
The energy-absorbing assembly of straight plug thin-wall pipe, comprises four power-absorbings and fixed element, and described power-absorbing is MULTILAYER COMPOSITE pipe, and the pipe wall material of the adjacent layer of MULTILAYER COMPOSITE pipe is mutually orthogonal; The two ends of power-absorbing are fixed on fixed element, and the opposite side of fixed element is petal-shaped opening, and power-absorbing and fixed element are arranged in thin-wall pipe.
Power-absorbing is four measure-alike composite cylinders, by evenly distributed, power-absorbing be placed in impact place and fixed at two ends with fixed element, preventing axial displacement.
The cross section of thin-wall pipe is square or circular, material can be steel, copper, aluminium or other can produce metal and the composite material of plastic deformation.
The material of composite cylinder can be identical with the material of thin-wall pipe, and its size is determined according to the size of thin-wall pipe.
Fixed element is the cylindrical section that external diameter is identical with thin-wall pipe internal diameter, and outside is petal-shaped opening.
The energy-absorbing assembly of straight plug thin-wall pipe provided by the invention, on space in pipe and circulation impact little, improve unit mass thin-wall pipe bearing capacity and than energy-absorbing rate, reduce uniform load property coefficient, decrease cripling and destruction, plastic deformation is evenly distributed in more on multi-section.The energy-absorbing assembly of this straight plug thin-wall pipe is reliable and stable simultaneously, can tackle the Normal stress in different parts and orientation, and external impact kinetic energy irreversibly dissipates with plastic deformation by failure mode and regulatable mode that can be stable.
Accompanying drawing explanation
Fig. 1 is longitudinal profile structural representation of the present invention;
Fig. 2 is horizontal section structural representation of the present invention;
Fig. 3 is power-absorbing horizontal section structural representation of the present invention;
Fig. 4 is fixed element structural representation of the present invention.
Embodiment
Accompanying drawings the specific embodiment of the present invention.
As depicted in figs. 1 and 2, the energy-absorbing assembly of straight plug thin-wall pipe, comprises four power-absorbings 2 and fixed element 3, and described power-absorbing 2 is MULTILAYER COMPOSITE pipe, and as shown in Figure 3, the pipe wall material of the adjacent layer of MULTILAYER COMPOSITE pipe is mutually orthogonal; The two ends of power-absorbing 2 are fixed on fixed element 3, and as shown in Figure 4, the opposite side of described fixed element 3 is petal-shaped opening, and power-absorbing 2 and fixed element 3 are arranged in thin-wall pipe 1.
Power-absorbing 2 is placed in thin-wall pipe 1, and power-absorbing 2 is positioned near impact load and reduces thin-wall pipe 1 cross section fasciation to absorb kinetic energy, and power-absorbing 2 fixed element 3 is fixed, and prevents power-absorbing from producing axial displacement under impact.Its arrangement mode, bonding mode and mode of filling in are shown in Fig. 2.Power-absorbing 2 is of a size of,
l, D and Δ are the length of thin-wall pipe 1, external diameter and thickness respectively, and l, d and δ are the length of composite cylinder, external diameter and thickness respectively.
Power-absorbing 2 is MULTILAYER COMPOSITE cylinder, and at least have three layers L1, L2, L3, and its typical cross section view is shown in Fig. 3, and namely each layer is mutually orthogonal.For being easy to implement, the also desirable material identical with thin-wall pipe.Power-absorbing 2 arranges by sparse mode, and at mutual tangent place, mighty bond bonds.
The use step of the energy-absorbing assembly of straight plug thin-wall pipe is: power-absorbing is filled in thin-wall pipe by the mode of Fig. 2, namely the high spot of power-absorbing 2 is close to the impact load point of thin-wall pipe 1, then measure with ruler and fill in distance for (L/2-l/2), finally fill in fixed element.
Claims (1)
1. the energy-absorbing assembly of straight plug thin-wall pipe, it is characterized in that, comprise four power-absorbings (2) and fixed element (3), described power-absorbing (2) is MULTILAYER COMPOSITE pipe, and the pipe wall material of the adjacent layer of MULTILAYER COMPOSITE pipe is mutually orthogonal; The two ends of power-absorbing (2) are fixed on fixed element (3), the opposite side of fixed element (3) is petal-shaped opening, and power-absorbing (2) and fixed element (3) are arranged in thin-wall pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510673460.5A CN105257756B (en) | 2015-10-15 | 2015-10-15 | The energy-absorbing component of straight plug thin-wall pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510673460.5A CN105257756B (en) | 2015-10-15 | 2015-10-15 | The energy-absorbing component of straight plug thin-wall pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105257756A true CN105257756A (en) | 2016-01-20 |
| CN105257756B CN105257756B (en) | 2017-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510673460.5A Active CN105257756B (en) | 2015-10-15 | 2015-10-15 | The energy-absorbing component of straight plug thin-wall pipe |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105857221A (en) * | 2016-03-30 | 2016-08-17 | 西华大学 | Sleeving type energy-absorption auxiliary component for thin-wall pipe |
| CN106763401A (en) * | 2016-12-28 | 2017-05-31 | 中北大学 | Thin metallic tubd echelon buffering energy-absorbing structure |
| CN108302283A (en) * | 2018-04-03 | 2018-07-20 | 中北大学 | For explosion-and-knock resistant protective device outside bright paving circular pipe |
| CN108730390A (en) * | 2018-03-15 | 2018-11-02 | 南京航空航天大学 | A kind of carbon fiber honeycomb duct structure |
| CN109027087A (en) * | 2018-08-28 | 2018-12-18 | 深圳市特种设备安全检验研究院 | Elevator safety gear free-fall testing buffer unit |
| CN113775682A (en) * | 2021-11-12 | 2021-12-10 | 太原理工大学 | Adjustable circular tube energy absorption/storage mechanism based on paper-cut structure |
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| JP2003137129A (en) * | 2001-10-31 | 2003-05-14 | Kawasaki Steel Corp | Collision energy absorbing member |
| JP2003139179A (en) * | 2001-10-31 | 2003-05-14 | Kawasaki Steel Corp | Collision energy absorption member |
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| JP2010111239A (en) * | 2008-11-06 | 2010-05-20 | Mazda Motor Corp | Collision energy absorbing member |
| CN102537644A (en) * | 2012-02-21 | 2012-07-04 | 湖南大学 | Porous material filling double-layer tube |
| CN202764894U (en) * | 2012-09-21 | 2013-03-06 | 吉林大学 | Bionic energy absorption tube imitating bamboo structure |
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2015
- 2015-10-15 CN CN201510673460.5A patent/CN105257756B/en active Active
Patent Citations (6)
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| JP2003137129A (en) * | 2001-10-31 | 2003-05-14 | Kawasaki Steel Corp | Collision energy absorbing member |
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Non-Patent Citations (1)
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105857221A (en) * | 2016-03-30 | 2016-08-17 | 西华大学 | Sleeving type energy-absorption auxiliary component for thin-wall pipe |
| CN105857221B (en) * | 2016-03-30 | 2018-06-29 | 西华大学 | A kind of energy-absorbing auxiliary of jacket-type thin-wall pipe |
| CN106763401A (en) * | 2016-12-28 | 2017-05-31 | 中北大学 | Thin metallic tubd echelon buffering energy-absorbing structure |
| CN108730390A (en) * | 2018-03-15 | 2018-11-02 | 南京航空航天大学 | A kind of carbon fiber honeycomb duct structure |
| CN108302283A (en) * | 2018-04-03 | 2018-07-20 | 中北大学 | For explosion-and-knock resistant protective device outside bright paving circular pipe |
| CN108302283B (en) * | 2018-04-03 | 2024-01-05 | 中北大学 | External antiknock and impact-resistant protection device for exposed circular pipeline |
| CN109027087A (en) * | 2018-08-28 | 2018-12-18 | 深圳市特种设备安全检验研究院 | Elevator safety gear free-fall testing buffer unit |
| CN113775682A (en) * | 2021-11-12 | 2021-12-10 | 太原理工大学 | Adjustable circular tube energy absorption/storage mechanism based on paper-cut structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105257756B (en) | 2017-10-10 |
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