CN110576654A - Be applied to sandwich structure on car collision energy-absorbing box - Google Patents
Be applied to sandwich structure on car collision energy-absorbing box Download PDFInfo
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- CN110576654A CN110576654A CN201910831546.4A CN201910831546A CN110576654A CN 110576654 A CN110576654 A CN 110576654A CN 201910831546 A CN201910831546 A CN 201910831546A CN 110576654 A CN110576654 A CN 110576654A
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- composite
- octagon
- sandwich structure
- energy absorption
- collision energy
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- 239000002131 composite material Substances 0.000 claims abstract description 55
- 238000010521 absorption reaction Methods 0.000 claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 25
- 239000011229 interlayer Substances 0.000 claims abstract description 24
- 239000010410 layer Substances 0.000 claims abstract description 19
- 239000010936 titanium Substances 0.000 claims abstract description 19
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 19
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 18
- 240000009087 Crescentia cujete Species 0.000 claims abstract description 16
- 235000005983 Crescentia cujete Nutrition 0.000 claims abstract description 16
- 235000009797 Lagenaria vulgaris Nutrition 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 15
- 239000004744 fabric Substances 0.000 claims abstract description 9
- 239000007769 metal material Substances 0.000 claims abstract description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- 235000009852 Cucurbita pepo Nutrition 0.000 claims description 6
- 229920006231 aramid fiber Polymers 0.000 claims description 6
- 239000004917 carbon fiber Substances 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 6
- 239000004760 aramid Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 240000001980 Cucurbita pepo Species 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 241000219122 Cucurbita Species 0.000 description 5
- 239000004033 plastic Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 229910001095 light aluminium alloy Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- -1 titanium metals Chemical class 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/56—Damping, energy absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/08—Cars
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Vibration Dampers (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a sandwich structure applied to an automobile collision energy absorption box, which comprises: the upper composite plate, the composite interlayer and the bottom composite plate are arranged in a stacked mode; the upper-layer composite board comprises composite material fiber cloth and a titanium metal plate which are arranged in a stacked mode; the composite interlayer comprises a calabash pipe thin-wall structure and a garland type honeycomb structure; the bottom layer composite board comprises a titanium metal plate and a porous metal material which are arranged in a stacked mode. The sandwich structure overcomes the problems of high peak stress, low efficiency, heavy weight and the like of the traditional collision energy-absorbing structure, can design the automobile collision energy-absorbing structure with low peak stress, high efficiency and light weight, and achieves the automobile development targets of safety, light weight and environmental protection.
Description
Technical Field
The invention relates to an automobile collision sandwich structure, and belongs to the field of automobile passive safety protection.
Background
With the continuous development of the automobile industry, the automobile industry becomes one of the important post industries of national economy at present, and the automobile keeping quantity in China reaches 2.4 hundred million by 2018. The rapid increase of the number of automobiles brings great convenience to the life of people and also brings more serious safety problems and environmental protection problems. Therefore, improving the safety and environmental protection of automobiles is a common goal in the global automobile industry. When an automobile collides, the thin-wall energy absorption box structure on the automobile beam longitudinal beam absorbs energy generated by collision through plastic deformation generated by crushing, so that the collision energy transmitted to a passenger is reduced to the maximum extent, the purpose of protecting the passenger is achieved, and the automobile collision energy absorption box is very important. At present, most of automobile collision energy absorption boxes are square or round tubular members, the peak stress is high, the specific energy absorption is low, and good safety performance cannot be achieved when an automobile collides. Therefore, the design of the automobile anti-collision thin-wall energy absorption box with low peak stress, high energy absorption ratio and light weight has very important significance.
disclosure of Invention
The invention aims to solve the main problems of high peak stress, low efficiency, heavy mass and the like of the traditional crash energy absorption box, and designs an automobile crash energy absorption box structure with low peak stress, high efficiency and light weight so as to achieve the development targets of safe, light and environment-friendly automobiles.
in order to solve the above problems, the present invention provides a sandwich structure applied to an automobile crash energy-absorbing box, comprising: the upper composite plate, the composite interlayer and the bottom composite plate are arranged in a stacked mode;
The upper-layer composite board comprises composite material fiber cloth and a titanium metal plate which are arranged in a stacked mode; the composite interlayer comprises a calabash pipe thin-wall structure and a garland type honeycomb structure; the bottom layer composite board comprises a titanium metal plate and a porous metal material which are arranged in a stacked mode;
The calabash tube thin-wall structures and the rosette type honeycomb structures form array arrangement, wherein the calabash tube thin-wall structures are positioned at four vertex angles of the array structures, and the rosette type honeycomb structures are positioned at other positions of the array;
The characteristic curve of the thin-wall structure of the gourd pipe is composed of three different sections of sine curves, wherein the three different sections of sine curves are respectively as follows: y is1＝2sinx，y2＝sinx，the flower ring type honeycomb structure consists of three circles, two sections of circular arcs and an octagon, wherein the two circles are distributed along the vertical symmetry axis of the octagon, and the other circle is arranged at the center of the octagon; two circles distributed along the vertical symmetry axis of the octagon are tangent and are respectively tangent with the upper and lower edges of the octagon; the end points of the two sections of circular arcs are respectively intersected with two circles distributed along the vertical symmetry axis of the octagon, and the two sections of circular arcs are respectively tangent with the left side and the right side of the octagon.
In a preferred embodiment: the composite material fiber cloth is composed of aramid fibers, carbon fibers, glass fibers and metal fibers.
In a preferred embodiment: the aramid fiber, the carbon fiber, the glass fiber and the metal fiber are laminated at angles of 0 degree, 45 degrees, 90 degrees and 135 degrees from top to bottom respectively.
In a preferred embodiment: the titanium metal plate of the bottom composite plate is in contact with the lower surface of the composite interlayer.
Compared with the prior art, the invention has the beneficial effects that:
1. The invention provides a sandwich structure applied to an automobile collision energy absorption box, which adopts titanium metal plates which are arranged at two ends of a composite interlayer, and the titanium metal has high strength performance, so that the generated energy can be effectively and stably transmitted to the composite interlayer when collision occurs, the transmission direction of collision force is effectively prevented from changing suddenly, the energy absorption performance of the composite interlayer is more effectively utilized, and the energy absorption efficiency is improved.
2. the invention provides a sandwich structure applied to an automobile collision energy absorption box, which mainly absorbs energy through a composite interlayer in the middle. The thin-walled structure of the gourd pipe can effectively reduce peak stress, so that the danger faced by passengers in the vehicle when collision occurs is reduced, and the plastic deformation of the structure can be effectively guided by the multi-layer curved surface structure, so that the purpose of efficient energy absorption is achieved. The garland honeycomb structure has higher specific energy absorption, and the side body of curved surface can adapt to the collision condition of multi-angle, and then more effective protection passenger safety.
3. The invention provides a sandwich structure applied to an automobile collision energy absorption box, which is made of composite material fiber cloth, titanium metal, light aluminum alloy and porous metal materials, and the materials have small mass while meeting the safety, meet the design requirement of light weight and accord with the theme of environmental protection.
Description of the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of an upper composite panel according to the present invention;
FIG. 3 is a schematic top view of an upper composite panel according to the present invention;
FIG. 4 is a schematic view of a composite sandwich structure of the present invention;
FIG. 5 is a schematic view of the construction of an underlying composite panel of the present invention;
FIG. 6 is a schematic diagram of the thin wall structure of the calabash tube of the present invention;
FIG. 7 is a schematic view of a rosette honeycomb of the present invention;
The specific implementation mode is as follows:
The description is further illustrated with reference to specific examples. It should be noted that: the following examples are only for illustrating the present invention and are not intended to limit the technical solutions described in the present invention, and all technical solutions and modifications thereof that do not depart from the scope of the present invention should be included in the claims of the present invention.
the invention provides a sandwich structure applied to an automobile crash energy absorption box, which comprises an upper composite plate 101, a composite interlayer 102 and a bottom composite plate 103 as shown in figure 1.
the upper-layer composite board 101 is shown in fig. 2 and 3 and comprises a composite material fiber cloth 201 and a titanium metal board 202; the composite material fiber cloth 201 is composed of aramid fibers 203, carbon fibers 204, glass fibers 205 and metal fibers 206, has the advantages of high axial strength, light weight, good fatigue, small thermal expansion coefficient and the like, and can improve the crashworthiness of the energy absorption box and the applicability in multiple environments; the titanium metal plate 202 is in contact with the middle composite interlayer 102, the titanium metal is small in density, good in low-temperature performance and high in heat strength, can adapt to collision conditions in severe weather, can well transmit energy generated by collision to the middle composite interlayer due to the large strength of the titanium metal plate, and absorbs more collision energy as much as possible by the middle composite interlayer.
The aramid fiber layer 203, the carbon fiber layer 204, the glass fiber layer 205 and the metal fiber layer 206 are laminated from top to bottom at angles of 0 degrees, 45 degrees, 90 degrees and 135 degrees, and the multi-angle weaving technology can effectively avoid negative effects caused by the defects of various fiber materials, so that the whole composite fiber cloth has ideal performance.
the composite interlayer 102 is shown in fig. 4 and comprises a calabash tube thin-wall structure 301 and a garland type honeycomb structure 302, wherein the calabash tube thin-wall structure 301 is shown in fig. 6, and the garland type honeycomb structure 302 is shown in fig. 7. The gourd pipe thin-wall structures 301 and the flower ring type honeycomb structures 302 form an array arrangement, wherein the gourd pipe thin-wall structures 301 are positioned at four vertex angles of the array structure, and the flower ring type honeycomb structures 302 are positioned at other positions of the array; the characteristic curve of the gourd pipe thin-wall structure 301 is composed of three different sections of sinusoidal curves, wherein the three different sections of sinusoidal curves are respectively as follows: y is1＝2sinx，y2＝sin x，The reason for adopting three different sections of sine curves is that a multi-layer structure with smooth transition at the joint can be generated, and each layer has similar characteristics, so that the structure is ensured to have very stable performance on the whole, and the whole structure can stably play the role of guiding the honeycomb part in the composite interlayer to deform layer by layer when being collided.
the rosette type honeycomb structure 302 is composed of three circles, two circular arcs and an octagon, wherein the two circles are distributed along the vertical symmetry axis of the octagon, and the other circle is arranged at the center of the octagon; two circles distributed along the vertical symmetry axis of the octagon are tangent and are respectively tangent with the upper and lower edges of the octagon; the end points of the two sections of circular arcs are respectively intersected with two circles distributed along the vertical symmetry axis of the octagon, and the two sections of circular arcs are respectively tangent with the left side and the right side of the octagon.
Although the mechanical property of a single calabash tube thin-wall structure 301 is inferior to that of a honeycomb structure, the gradient multilayer design of the single calabash tube thin-wall structure is more favorable for guiding the structure to perform layer-by-layer compression deformation when the structure is collided, so that the calabash tube thin-wall structure 301 is arranged at four corners of a composite interlayer, the aim of guiding the composite interlayer to perform layer-by-layer compression deformation after the composite interlayer is collided and impacted, and the other positions are filled by a garland type honeycomb structure 302, so that the defect of total energy absorption of the calabash tube thin-wall structure 301 is. The combination of the two can ensure that the sandwich structure can absorb more energy and ensure that the energy absorption efficiency is high enough. The symmetrical sandwich structure can effectively cope with the collision at various angles, the thin-wall structure 301 of the calabash tube can effectively reduce peak stress, the curved side wall of the calabash tube can guide the honeycomb to perform plastic deformation, and further the energy absorption is more efficient, the garland honeycomb structure 302 has higher energy absorption ratio, and can stably and efficiently absorb more collision energy.
As shown in fig. 5, the bottom composite plate 103 is composed of a titanium metal plate 401 and a porous metal material 402, the titanium metal plate 401 is in contact with the middle composite interlayer 102, the higher strength of the titanium metal plate assists the middle composite interlayer 102 to absorb the collision energy more efficiently, the other layer is made of the porous metal material 402, the porous metal material 402 has the characteristics of small specific gravity, rigidity, good specific strength and the like, can assist the middle composite interlayer 102 to absorb the energy, and the characteristic of good shock absorption can improve the stability of the whole sandwich structure.
The sandwich structure is combined by bonding means, and the manufacturing means is simple. The invention adopts light materials such as fiber materials, titanium metals, light aluminum alloys, porous metal materials and the like, effectively meets the requirement of light weight, fully ensures the absorption of collision energy, and simultaneously has enough light weight to effectively reduce the energy consumption of the automobile, thereby reducing the emission pollution and achieving the design requirement of the environment-friendly automobile.
the above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby. Equivalent changes and modifications made according to the patent scope and the specification of the present invention should be covered by the present invention.
Claims (4)
1. the utility model provides a be applied to sandwich structure on car collision energy-absorbing box which characterized in that includes: the upper composite plate, the composite interlayer and the bottom composite plate are arranged in a stacked mode;
the upper-layer composite board comprises composite material fiber cloth and a titanium metal plate which are arranged in a stacked mode; the composite interlayer comprises a calabash pipe thin-wall structure and a garland type honeycomb structure; the bottom layer composite board comprises a titanium metal plate and a porous metal material which are arranged in a stacked mode;
The calabash tube thin-wall structures and the rosette type honeycomb structures form array arrangement, wherein the calabash tube thin-wall structures are positioned at four vertex angles of the array structures, and the rosette type honeycomb structures are positioned at other positions of the array;
The characteristic curve of the thin-wall structure of the gourd pipe is composed of three different sections of sine curves, wherein the three different sections of sine curves are respectively as follows: y is1＝2sinx，y2＝sinx，the flower ring type honeycomb structure is composed of three circles, two sections of circular arcs and an octagon, wherein the two circlesDistributed along the vertical symmetry axis of the octagon, another circle being arranged at the center of the octagon; two circles distributed along the vertical symmetry axis of the octagon are tangent and are respectively tangent with the upper and lower edges of the octagon; the end points of the two sections of circular arcs are respectively intersected with two circles distributed along the vertical symmetry axis of the octagon, and the two sections of circular arcs are respectively tangent with the left side and the right side of the octagon.
2. The sandwich structure applied to the automobile crash energy absorption box according to claim 1, wherein: the composite material fiber cloth is composed of aramid fibers, carbon fibers, glass fibers and metal fibers.
3. the sandwich structure applied to the automobile crash energy absorption box according to claim 2, wherein: the aramid fiber, the carbon fiber, the glass fiber and the metal fiber are laminated at angles of 0 degree, 45 degrees, 90 degrees and 135 degrees from top to bottom respectively.
4. The sandwich structure applied to the automobile crash energy absorption box according to claim 1, wherein: the titanium metal plate of the bottom composite plate is in contact with the lower surface of the composite interlayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910831546.4A CN110576654B (en) | 2019-09-04 | 2019-09-04 | Sandwich structure applied to automobile collision energy-absorbing box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910831546.4A CN110576654B (en) | 2019-09-04 | 2019-09-04 | Sandwich structure applied to automobile collision energy-absorbing box |
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| CN110576654A true CN110576654A (en) | 2019-12-17 |
| CN110576654B CN110576654B (en) | 2023-06-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111619170A (en) * | 2020-06-23 | 2020-09-04 | 华侨大学 | Sandwich structure for passenger car protection structure |
| CN112081850A (en) * | 2020-09-30 | 2020-12-15 | 华侨大学 | Vibration-damping energy-absorbing composite capsule |
| CN113007583A (en) * | 2021-03-17 | 2021-06-22 | 三峡大学 | Cellular progressive hierarchical honeycomb sandwich structure |
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| CN111619170A (en) * | 2020-06-23 | 2020-09-04 | 华侨大学 | Sandwich structure for passenger car protection structure |
| CN112081850A (en) * | 2020-09-30 | 2020-12-15 | 华侨大学 | Vibration-damping energy-absorbing composite capsule |
| CN112081850B (en) * | 2020-09-30 | 2024-06-07 | 华侨大学 | Vibration-damping and energy-absorbing composite capsule |
| CN113007583A (en) * | 2021-03-17 | 2021-06-22 | 三峡大学 | Cellular progressive hierarchical honeycomb sandwich structure |
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