CN212860698U - Bumper reinforcing plate with excellent impact resistance and bending resistance - Google Patents
Bumper reinforcing plate with excellent impact resistance and bending resistance Download PDFInfo
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- CN212860698U CN212860698U CN202021567280.1U CN202021567280U CN212860698U CN 212860698 U CN212860698 U CN 212860698U CN 202021567280 U CN202021567280 U CN 202021567280U CN 212860698 U CN212860698 U CN 212860698U
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Abstract
The utility model provides a bumper reinforcing plate with excellent shock resistance and bending resistance, which comprises an upper fiber reinforced resin layer, a composite honeycomb interlayer and a lower fiber reinforced resin layer which are arranged from top to bottom in sequence; the composite honeycomb sandwich comprises an anti-collision honeycomb plate and an annular supporting plate, the anti-collision honeycomb plate is arranged in the annular supporting plate and comprises an upper side plate, a lower side plate and a honeycomb framework arranged between the upper side plate and the lower side plate, the honeycomb framework is of a honeycomb structure with a negative Poisson ratio effect, the honeycomb framework is formed by connecting a plurality of cells with concave hexagonal sections, and the axes of the cells are parallel to the upper side plate and the lower side plate; the upper fiber reinforced resin layer and the lower fiber reinforced resin layer are basalt fiber reinforced resin layers compounded by three-dimensional porous basalt fiber materials and epoxy resin. The utility model discloses a reinforcing plate has excellent shock resistance and anti bending property.
Description
Technical Field
The utility model relates to an automobile spare and accessory part technical field, concretely relates to bumper reinforcing plate with excellent shock resistance and anti bending property.
Background
The automobile bumper is a common automobile accessory and mainly plays a role in protecting mechanical equipment and the like at the head and the tail of a vehicle when the vehicle collides. The existing automobile bumper mainly focuses on researching the improvement of the collision resistance and the protection performance of the automobile bumper on pedestrians, and the research on the bending resistance is less, so that the bumper is generally weak in bending resistance, and the bumper is easy to break.
Therefore, in order to better improve the protective function and the service life of the bumper, a reinforcing plate having excellent impact resistance and bending resistance, which can be disposed inside the bumper, can be designed.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a bumper reinforcement panel having excellent impact resistance and bending resistance.
The bumper reinforcing plate with excellent shock resistance and bending resistance provided by the utility model comprises an upper fiber reinforced resin layer, a composite honeycomb interlayer and a lower fiber reinforced resin layer which are sequentially arranged from top to bottom; the fiber reinforced resin upper layer, the composite honeycomb sandwich layer and the fiber reinforced resin lower layer can be connected through bonding, and can also be reinforced and connected by adopting screws after the bonding and connection; the composite honeycomb sandwich comprises an anti-collision honeycomb plate and an annular supporting plate, wherein the anti-collision honeycomb plate is arranged in the annular supporting plate, specifically, the section of the annular supporting plate is square annular, the annular supporting plate just wraps the periphery of the anti-collision honeycomb plate, the anti-collision honeycomb plate comprises an upper side plate, a lower side plate and a honeycomb framework arranged between the upper side plate and the lower side plate, the upper side plate is attached to the upper layer of fiber reinforced resin, the lower side plate is attached to the lower layer of the fiber reinforced resin, the honeycomb framework is of a honeycomb structure with a negative poisson's ratio effect, the honeycomb framework is formed by joining a plurality of cells with concave sections, and the axes of the cells are parallel to the upper side plate and the lower side plate; the honeycomb framework formed by connecting the cells with the concave hexagonal sections is provided with a plurality of concave hexagonal holes and trapezoidal holes, and the upper fiber reinforced resin layer and the lower fiber reinforced resin layer are basalt fiber reinforced resin layers compounded by three-dimensional porous basalt fiber materials and epoxy resin. In the utility model, the honeycomb framework of the anti-collision honeycomb plate in the composite honeycomb interlayer is an inward concave honeycomb framework structure with a negative Poisson's ratio effect, the honeycomb structure has higher compression modulus and yield strength, more energy absorption and excellent energy absorption effect, and has excellent shock wave attenuation characteristic and better attenuation effect on shock waves in the impact process; meanwhile, the basalt fiber has excellent performances such as high strength, high modulus, high compressive strength and high shear strength, the basalt fiber reinforced resin layer formed by compounding a three-dimensional porous basalt fiber material and epoxy resin is adopted, the epoxy resin is filled in three-dimensional meshes and is mutually interpenetrated, crossed and compounded with the three-dimensional porous basalt fiber material into a whole, the interface bonding strength is high, and the formed composite structure has strong integrity, high integral strength and excellent bending resistance through mutual constraint and mutual reinforcement of the epoxy resin and the three-dimensional porous basalt fiber. The utility model discloses a reinforcing plate that the compound honeycomb intermediate layer that has excellent anti bending property carries out the complex and makes with the fiber reinforcement resin layer that has excellent impact resistance and anti bending property simultaneously, sets up it in the bumper inboard, can improve the crashworthiness and the anti bending property of bumper effectively. The reinforcing plate may be disposed inside the bumper by means of screw connection or the like.
Furthermore, the edge of the lower fiber reinforced resin layer is bent upwards and extends to cover four side surfaces of the annular support plate. Further improve the fastness of the connection of the lower layer of the fiber reinforced resin and the composite honeycomb sandwich layer.
Furthermore, a plurality of honeycomb holes are formed in the annular supporting plate, and the axes of the honeycomb holes are perpendicular to the axes of the honeycomb framework cells. The composite honeycomb sandwich structure has the advantages that the weight can be reduced, and the honeycomb holes are arranged to absorb energy, so that the annular supporting plate has certain impact resistance, and the impact resistance of the composite honeycomb sandwich layer is further improved.
Further, the three-dimensional porous basalt fiber material is a three-dimensional porous structure material which is formed by weaving basalt fibers and has three-dimensional communicating holes, holes of the three-dimensional porous basalt fiber material are uniformly distributed, the communicating porosity is 85-95%, the optimal porosity is 95%, and the pore diameter is 1-3 mm.
Further, the cell element comprises two first cell walls and four second cell walls, wherein the first cell walls and the second cell walls are arranged in parallel, the first cell walls and the second cell walls are connected and enclose to form an inwards concave hexagonal structure, the thicknesses of the first cell walls and the second cell walls are both 0.5mm, the distance between the two first cell walls is 2.4-2.5 mm, the preferred distance is 2.4mm, and the included angle alpha between the first cell walls and the second cell walls is 30 degrees. Through comparison verification, the honeycomb framework designed according to the parameters has the advantages of best comprehensive performance, higher compression modulus and yield strength, strongest deformation resistance under the action of quasi-static loading, excellent mechanical property, optimal energy absorption characteristic, optimal energy absorption effect and optimal damping performance on impact waves.
Further, the thickness of the upper side plate and the lower side plate is 0.5mm, and the upper side plate, the lower side plate and the honeycomb framework are of an integrated structure. Can be through mode shaping such as punching press, the structural stability of integral structure is higher, and intensity is also better.
Further, the thickness of compound honeycomb intermediate layer is 9.2 ~ 9.5mm, and preferred thickness is 9.2mm, the thickness of fibre reinforced resin upper strata and fibre reinforced resin lower floor is 2 ~ 3mm, and preferred thickness is 3mm, the wall thickness of cyclic annular backup pad is 3 ~ 5mm, and preferred wall thickness is 3 mm. The weight and thickness of the bumper are not greatly increased while excellent impact resistance and bending resistance of the reinforcing plate are ensured.
Furthermore, the materials of the anti-collision honeycomb plate and the annular supporting plate are both titanium alloy or aluminum alloy. The titanium alloy and the aluminum alloy are light in mass, the weight of a bumper cannot be greatly increased, and under the same mass, the concave honeycomb structure surface of the titanium alloy absorbs energy most, the absorbed impact energy is most, the attenuation performance of impact waves is optimal, and the concave honeycomb structure framework is lighter and stronger.
The utility model has the advantages that:
the utility model discloses in, the honeycomb skeleton of crashproof honeycomb panel in the compound honeycomb intermediate layer is for having the interior concave type honeycomb skeleton structure of negative poisson's ratio effect, this kind of honeycomb structure has higher compression modulus and yield strength, the energy absorption is many, the energy-absorbing effect is excellent, and in the striking process, has excellent shock wave attenuation characteristic, has better attenuation effect to the shock wave, through with crashproof honeycomb panel coaxial embedded in the cyclic annular backup pad of seting up honeycomb hole, not only can further improve compound honeycomb and add the shock resistance of layer, can also improve the holistic rigidity intensity of compound honeycomb intermediate layer; meanwhile, the basalt fiber has excellent performances such as high strength, high modulus, high compressive strength and high shear strength, the basalt fiber reinforced resin layer formed by compounding a three-dimensional porous basalt fiber material and epoxy resin is adopted, the epoxy resin is filled in three-dimensional meshes and is mutually interpenetrated, crossed and compounded with the three-dimensional porous basalt fiber material into a whole, the interface bonding strength is high, and the formed composite structure has strong integrity, high integral strength and excellent bending resistance through mutual constraint and mutual reinforcement of the epoxy resin and the three-dimensional porous basalt fiber. The utility model discloses a reinforcing plate that the compound honeycomb intermediate layer that has excellent anti bending property carries out the complex and makes with the fiber reinforcement resin layer that has excellent impact resistance and anti bending property simultaneously, sets up it in the bumper inboard, can improve the crashworthiness and the anti bending property of bumper effectively.
Drawings
The invention will be further described with reference to the following figures and examples:
FIG. 1 is a schematic cross-sectional view of a bumper reinforcement plate according to the present invention;
figure 2 is a top view of the composite honeycomb sandwich of the present invention;
fig. 3 is a schematic view of a partial structure of the anti-collision honeycomb panel of the present invention;
FIG. 4 is a schematic view of a partial structure of a three-dimensional porous basalt fiber material of the present invention;
in the figure: 1. the structure comprises a fiber reinforced resin upper layer, a fiber reinforced resin lower layer, a collision honeycomb plate, a collision prevention honeycomb plate, a fiber reinforced resin lower layer, a ring-shaped supporting plate, a fiber reinforced resin upper layer, a fiber reinforced resin lower layer, a.
Detailed Description
FIG. 1 is a schematic cross-sectional view of a bumper reinforcement plate according to the present invention; figure 2 is a top view of the composite honeycomb sandwich of the present invention; fig. 3 is a schematic view of a partial structure of the anti-collision honeycomb panel 2 of the present invention; FIG. 4 is a schematic view of a partial structure of a three-dimensional porous basalt fiber material of the present invention;
the orientation or positional relationship such as up-down, left-right, and the like in the present embodiment is based on the orientation or positional relationship shown in the drawings; as shown in the figure:
the bumper reinforcing plate with excellent impact resistance and bending resistance provided by the embodiment comprises an upper fiber reinforced resin layer 1, a composite honeycomb interlayer and a lower fiber reinforced resin layer 3 which are sequentially arranged from top to bottom; the fiber reinforced resin upper layer 1, the composite honeycomb sandwich layer and the fiber reinforced resin lower layer 3 can be connected through bonding, or can be reinforced and connected by adopting screws after the bonding and connection; the composite honeycomb sandwich comprises an anti-collision honeycomb plate 2 and an annular supporting plate 4, the anti-collision honeycomb plate 2 is coaxially embedded in the annular supporting plate 4, specifically, the section of the annular supporting plate 4 is square annular, the annular supporting plate 4 just wraps the periphery of the anti-collision honeycomb plate 2, the anti-collision honeycomb plate 2 comprises an upper side plate 21, a lower side plate 22 and a honeycomb framework arranged between the upper side plate 21 and the lower side plate 22, the upper side plate 21 is attached to an upper fiber reinforced resin layer 1, the lower side plate 22 is attached to a lower fiber reinforced resin layer 3, the honeycomb framework is of a honeycomb structure with a negative poisson's ratio effect, the honeycomb framework is formed by joining a plurality of cells with concave hexagonal sections, and the axes of the cells are parallel to the upper side plate 21 and the lower side plate 22; the honeycomb framework formed by connecting the cells with concave hexagonal sections is provided with a plurality of concave hexagonal holes and trapezoidal holes, and the fiber reinforced resin upper layer 1 and the fiber reinforced resin lower layer 3 are basalt fiber reinforced resin layers formed by compounding three-dimensional porous basalt fiber materials and epoxy resin. In the embodiment, the honeycomb framework of the anti-collision honeycomb plate 2 in the composite honeycomb interlayer is of an inward concave honeycomb framework structure with a negative Poisson's ratio effect, the honeycomb structure has high compression modulus and yield strength, more energy absorption and excellent energy absorption effect, and has excellent shock wave attenuation characteristic and good attenuation effect on shock waves in the collision process, and the overall rigidity of the composite honeycomb interlayer can be improved by coaxially embedding the anti-collision honeycomb plate 2 in the annular supporting plate 4; meanwhile, the basalt fiber has excellent performances such as high strength, high modulus, high compressive strength and high shear strength, the basalt fiber reinforced resin layer formed by compounding a three-dimensional porous basalt fiber material and epoxy resin is adopted, the epoxy resin is filled in three-dimensional meshes and is mutually interpenetrated, crossed and compounded with the three-dimensional porous basalt fiber material into a whole, the interface bonding strength is high, and the formed composite structure has strong integrity, high integral strength and excellent bending resistance through mutual constraint and mutual reinforcement of the epoxy resin and the three-dimensional porous basalt fiber. In the embodiment, the reinforcing plate which is prepared by compounding the fiber reinforced resin layer with excellent bending resistance and the composite honeycomb sandwich layer with excellent impact resistance and has excellent impact resistance and bending resistance is arranged on the inner side of the bumper, so that the anticollision property and the bending resistance of the bumper can be effectively improved. The reinforcing plate may be disposed inside the bumper by means of screw connection or the like.
In this embodiment, the edge of the lower fiber reinforced resin layer 3 is bent upward to cover four side surfaces of the annular support plate 4. Further improve the fastness of the connection of the fiber reinforced resin lower layer 3 and the composite honeycomb sandwich.
In this embodiment, a plurality of honeycomb holes are formed in the annular supporting plate 4, and the axes of the honeycomb holes are perpendicular to the axes of the honeycomb framework cells. The weight can be reduced, and the annular supporting plate 4 has certain shock resistance by absorbing energy through the honeycomb holes, so that the shock resistance of the composite honeycomb sandwich layer is further improved.
In the embodiment, the three-dimensional porous basalt fiber material is a three-dimensional porous structure material with three-dimensional interconnected pores, and is formed by weaving basalt fibers, wherein the pores of the three-dimensional porous basalt fiber material are uniformly distributed, the interconnected porosity is 85-95%, preferably 95%, and the pore diameter is 1-3 mm.
In this embodiment, the cell element includes two first cell walls 23 and four concave second cell walls 24 arranged in parallel, the first cell walls 23 and the second cell walls 24 are connected and enclose to form a concave hexagonal structure, the thicknesses of the first cell walls 23 and the second cell walls 24 are both 0.5mm, the distance between the two first cell walls 23 is 2.4-2.5 mm, preferably 2.4mm, and the included angle α between the first cell walls 23 and the second cell walls 24 is 30 °. Through comparison verification, the honeycomb framework designed according to the parameters has the advantages of best comprehensive performance, higher compression modulus and yield strength, strongest deformation resistance under the action of quasi-static loading, excellent mechanical property, optimal energy absorption characteristic, optimal energy absorption effect and optimal damping performance on impact waves.
In this embodiment, the thicknesses of the upper side plate 21 and the lower side plate 22 are both 0.5mm, and the upper side plate 21, the lower side plate 22 and the honeycomb framework are of an integral structure. Can be through mode shaping such as punching press, the structural stability of integral structure is higher, and intensity is also better.
In this embodiment, the thickness of compound honeycomb intermediate layer is 9.2 ~ 9.5mm, and preferred thickness is 9.2mm, the thickness of fibre reinforced resin upper strata 1 and fibre reinforced resin lower floor 3 is 2 ~ 3mm, and preferred thickness is 3mm, the wall thickness of cyclic annular backup pad 4 is 3 ~ 5mm, and preferred wall thickness is 3 mm. The weight and thickness of the bumper are not greatly increased while excellent impact resistance and bending resistance of the reinforcing plate are ensured.
In this embodiment, the anti-collision honeycomb plate 2 and the annular supporting plate 4 are made of titanium alloy or aluminum alloy. The titanium alloy and the aluminum alloy are light in mass, the weight of a bumper cannot be greatly increased, and under the same mass, the concave honeycomb structure surface of the titanium alloy absorbs energy most, the absorbed impact energy is most, the attenuation performance of impact waves is optimal, and the concave honeycomb structure framework is lighter and stronger.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (7)
1. A bumper reinforcement panel having excellent impact resistance and bending resistance, characterized in that: comprises an upper fiber reinforced resin layer, a composite honeycomb interlayer and a lower fiber reinforced resin layer which are arranged from top to bottom in sequence; the composite honeycomb sandwich comprises an anti-collision honeycomb plate and an annular supporting plate, the anti-collision honeycomb plate is arranged in the annular supporting plate and comprises an upper side plate, a lower side plate and a honeycomb framework arranged between the upper side plate and the lower side plate, the upper side plate is attached to the upper layer of fiber reinforced resin, the lower side plate is attached to the lower layer of the fiber reinforced resin, the honeycomb framework is of a honeycomb structure with a negative Poisson ratio effect, the honeycomb framework is formed by joining a plurality of cells with concave hexagonal sections, and the axes of the cells are parallel to the upper side plate and the lower side plate; the upper fiber reinforced resin layer and the lower fiber reinforced resin layer are basalt fiber reinforced resin layers compounded by three-dimensional porous basalt fiber materials and epoxy resin.
2. The bumper reinforcement panel having excellent impact resistance and bending resistance according to claim 1, characterized in that: the edge of the lower fiber reinforced resin layer is bent upwards and extends to cover four side faces of the annular supporting plate.
3. The bumper reinforcement panel having excellent impact resistance and bending resistance according to claim 1, characterized in that: a plurality of honeycomb holes are formed in the annular supporting plate, and the axes of the honeycomb holes are perpendicular to the axes of the honeycomb framework cells.
4. The bumper reinforcement panel having excellent impact resistance and bending resistance according to claim 1, characterized in that: the three-dimensional porous basalt fiber material is a three-dimensional porous structure material which is formed by weaving basalt fibers and has three-dimensional intercommunicating pores, the pores of the three-dimensional porous basalt fiber material are uniformly distributed, the intercommunicating porosity is 85-95%, and the pore diameter is 1-3 mm.
5. The bumper reinforcement panel having excellent impact resistance and bending resistance according to claim 1, characterized in that: the cell element comprises two first cell walls and four concave second cell walls, wherein the two first cell walls are arranged in parallel, the four concave second cell walls are connected with each other and enclose to form a concave hexagonal structure, the thicknesses of the first cell walls and the second cell walls are both 0.5mm, the distance between the two first cell walls is 2.4-2.5 mm, and the included angle alpha between the first cell walls and the second cell walls is 30 degrees.
6. The bumper reinforcement panel having excellent impact resistance and bending resistance according to claim 5, characterized in that: the thickness of the upper side plate and the lower side plate is 0.5mm, and the upper side plate, the lower side plate and the honeycomb framework are of an integrated structure.
7. The bumper reinforcement panel having excellent impact resistance and bending resistance according to claim 6, characterized in that: the materials of the anti-collision honeycomb plate and the annular supporting plate are both titanium alloy or aluminum alloy.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021567280.1U CN212860698U (en) | 2020-07-31 | 2020-07-31 | Bumper reinforcing plate with excellent impact resistance and bending resistance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021567280.1U CN212860698U (en) | 2020-07-31 | 2020-07-31 | Bumper reinforcing plate with excellent impact resistance and bending resistance |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113910636A (en) * | 2021-09-30 | 2022-01-11 | 华中科技大学 | Fiber-reinforced concave hexagonal honeycomb core and forming die and forming method thereof |
| CN116176056A (en) * | 2023-02-15 | 2023-05-30 | 中国人民解放军军事科学院系统工程研究院 | Composite material with density gradient and negative poisson ratio honeycomb structure |
| CN117601508A (en) * | 2024-01-18 | 2024-02-27 | 嘉兴雅港复合材料有限公司 | Flexible aramid fiber honeycomb core suitable for complex curved surface and manufacturing method thereof |
-
2020
- 2020-07-31 CN CN202021567280.1U patent/CN212860698U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113910636A (en) * | 2021-09-30 | 2022-01-11 | 华中科技大学 | Fiber-reinforced concave hexagonal honeycomb core and forming die and forming method thereof |
| CN116176056A (en) * | 2023-02-15 | 2023-05-30 | 中国人民解放军军事科学院系统工程研究院 | Composite material with density gradient and negative poisson ratio honeycomb structure |
| CN116176056B (en) * | 2023-02-15 | 2023-08-29 | 中国人民解放军军事科学院系统工程研究院 | Composite material with density gradient and negative poisson ratio honeycomb structure |
| CN117601508A (en) * | 2024-01-18 | 2024-02-27 | 嘉兴雅港复合材料有限公司 | Flexible aramid fiber honeycomb core suitable for complex curved surface and manufacturing method thereof |
| CN117601508B (en) * | 2024-01-18 | 2024-04-19 | 嘉兴雅港复合材料有限公司 | Flexible aramid fiber honeycomb core suitable for complex curved surface and manufacturing method thereof |
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