CN209199098U - A kind of cactus biomimetic features energy-absorption box - Google Patents
A kind of cactus biomimetic features energy-absorption box Download PDFInfo
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- CN209199098U CN209199098U CN201822046847.XU CN201822046847U CN209199098U CN 209199098 U CN209199098 U CN 209199098U CN 201822046847 U CN201822046847 U CN 201822046847U CN 209199098 U CN209199098 U CN 209199098U
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- China
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- box body
- side panels
- rectangular side
- cactus
- energy
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Abstract
The utility model discloses a kind of cactus biomimetic features energy-absorption boxes, include front box body, middle part box body and rear portion box body, form referring to cactus outer shape Bionic Design.The invention also discloses a kind of Multipurpose Optimal Methods of cactus biomimetic features energy-absorption box, using the partial parameters of energy-absorbing box structure as optimized variable, establish corresponding objective function agent model, according to low speed collision regulation, constraint condition is set, cactus biomimetic features energy-absorption box Model for Multi-Objective Optimization is established, multiple-objection optimization is carried out to biomimetic features energy-absorption box using NSGA-II optimization algorithm.
Description
Technical field
The utility model relates to vehicle passive safety protection field more particularly to a kind of cactus biomimetic features energy-absorption boxes.
Background technique
Automobile mainly absorbs energy, the reduction that collision generates when head-on crash occurs by automobile front energy-absorbing box
Maximal impact mitigates impact in turn, to improve the crash-worthiness of vehicle, reduce the injury to interior driver and passenger.The celestial being
People slaps biomimetic features energy-absorption box front end and is connected with bumper beam, and rear end is connected with collision prevention girders, which can occur steady ordered
Deformation so that increase energy-absorption box energy absorption characteristics.The energy-absorption box used in current automobile is mostly square structure, and this structure exists
Deformation is not sufficiently stable in collision process, be cannot be fully absorbed the energy generated in collision process, can be reached energy in cockpit
It causes serious injury to member in cabin.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of celestial being for the deficiency being previously mentioned in background technique
Slap biomimetic features energy-absorption box.
The utility model uses following technical scheme to solve above-mentioned technical problem:
A kind of cactus biomimetic features energy-absorption box includes the front box body, middle part box body and rear portion box body being sequentially connected；
The front box body and automobile front beam crossbeam are connected, and rear portion box body and automobile buffer beam are connected；
The front box body, middle part box body, rear portion box body are in hexagonal star-shape, include 12 rectangular side panels, and ten
Six interior dog-ears and six outer dog-ears are formed between two rectangular side panels；Six interior dog-ears and six outer dog-ears are rounding
Angle；Enable intersection between rectangular side panels and its adjacent rectangle side plate length be the length of the rectangular side panels, rectangular side panels perpendicular to
The length on the side of the intersection is the width of rectangular side panels；
The front box body, middle part box body, the width of rectangular side panels is equal in the box body of rear portion；
The length of rectangular side panels is greater than the length of rectangular side panels in the box body of front and is less than middle part box in the rear portion box body
The length of rectangular side panels in body；
The thickness of rectangular side panels is greater than the thickness of rectangular side panels in the box body of front and is less than rear cartridge in the middle part box body
The thickness of rectangular side panels in body.
As a kind of further prioritization scheme of cactus biomimetic features energy-absorption box of the utility model, six outer dog-ears
Range with six infolding angular radius is 0-6mm, and the range of the interior dog-ear angle is 30-100 degree.
As a kind of further prioritization scheme of cactus biomimetic features energy-absorption box of the utility model, the front box body,
The range of the width of rectangular side panels is 30-40mm in middle part box body, rear portion box body.
As a kind of further prioritization scheme of cactus biomimetic features energy-absorption box of the utility model, the front box body,
The ratio of the length of rectangular side panels is 1:3:2 in middle part box body, rear portion box body.
As a kind of further prioritization scheme of cactus biomimetic features energy-absorption box of the utility model, the front box body square
The range of the thickness of shape side plate is 0.5-0.7mm, and the range of the thickness of the middle part box body rectangular side panels is 0.7-0.9mm, institute
The range for stating the thickness of rear portion box body rectangular side panels is 0.9-1.1mm.
The utility model compared with the prior art by using the above technical solution, has following technical effect that
1. efficiently solving traditional energy-absorption box deformation not the utility model proposes a kind of cactus biomimetic features energy-absorption box
Enough stabilizations, the defects of energy-absorbing effect is bad；
2. multi-objective optimization design of power is carried out to cactus biomimetic features energy-absorption box using NSGA-II multi-objective optimization algorithm,
Further increase the energy absorption characteristics of biomimetic features energy-absorption box.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the cross-sectional view of the utility model middle front part box body.
In figure, 1- energy-absorption box front box body, box body in the middle part of 2- energy-absorption box, 3- energy-absorption box rear portion box body, dog-ear in 4-, outside 5-
Dog-ear.
Specific embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawing:
The utility model can be embodied in many different forms, and should not be assumed that be limited to the embodiments described herein.
On the contrary, it is thorough and complete to these embodiments are provided so that the disclosure, and this reality will be given full expression to those skilled in the art
With novel range.In the accompanying drawings, for the sake of clarity it is exaggerated component.
As shown in Figure 1 and Figure 2, the utility model discloses a kind of cactus biomimetic features energy-absorption box, include what is be sequentially connected
Front box body, middle part box body and rear portion box body；
The front box body and automobile front beam crossbeam are connected, and rear portion box body and automobile buffer beam are connected；
The front box body, middle part box body, rear portion box body are in hexagonal star-shape, include 12 rectangular side panels, and ten
Six interior dog-ears and six outer dog-ears are formed between two rectangular side panels；Six interior dog-ears and six outer dog-ears are rounding
Angle；Enable intersection between rectangular side panels and its adjacent rectangle side plate length be the length of the rectangular side panels, rectangular side panels perpendicular to
The length on the side of the intersection is the width of rectangular side panels；
The front box body, middle part box body, the width of rectangular side panels is equal in the box body of rear portion；
The length of rectangular side panels is greater than the length of rectangular side panels in the box body of front and is less than middle part box in the rear portion box body
The length of rectangular side panels in body；
The thickness of rectangular side panels is greater than the thickness of rectangular side panels in the box body of front and is less than rear cartridge in the middle part box body
The thickness of rectangular side panels in body.
This design sufficiently be crushed thus as much as possible so that energy-absorption box front end rigidity is low as far as possible in middle position
Energy is absorbed, energy-absorption box rear end has greater stiffness to guarantee that energy-absorption box keeps stablizing plastic deformation.
The range of six outer dog-ears and six infolding angular radius is 0-6mm, and the range of interior dog-ear angle is 30-100
Degree.
The front box body, middle part box body, the range of the width of rectangular side panels is 30-40mm in the box body of rear portion.
The front box body, middle part box body, the ratio of the length of rectangular side panels is 1:3:2 in the box body of rear portion.
The range of the thickness of the front box body rectangular side panels is 0.5-0.7mm, the thickness of the middle part box body rectangular side panels
The range of degree is 0.7-0.9mm, and the range of the thickness of the rear portion box body rectangular side panels is 0.9-1.1mm.
One group of specific design parameter is given below: biomimetic features energy-absorption box axial length is designed referring to traditional energy-absorption box, is
228mm.Front box body, middle part box body, in the box body of rear portion, the width of rectangular side panels is 36mm, and the thickness of rectangular side panels is successively
For 0.6mm, 0.8mm, 1.0mm, the radius of six outer dog-ears and six interior dog-ears is 3mm, and interior dog-ear angle is 60 degree.Front
Box body and middle part box body are attached by laser assembly solder, and middle part box body and rear portion box body are attached by laser assembly solder.
The invention also discloses a kind of optimization methods of cactus biomimetic features energy-absorption box, comprising the following steps:
Step 1) chooses optimal Latin hypercube design method in Isight optimization software, optimizes in each needs
Uniformly choose N group design sample point in the preset threshold range of design variable parameter, N is natural number greater than 0, preferentially takes 100；
The design variable parameter for needing to optimize includes width L, the infolding angular radius R of rectangular side panels1, rectangular side panels in leading portion box body
Thickness T1, the thickness T of rectangular side panels in the box body of middle section2, the thickness T of rectangular side panels in back segment box body3；
Step 2) establishes N group cactus biomimetic features energy-absorption box according to the design sample of selection point in Catia software
CAD model, GTD model and grid dividing are carried out to it, and the material category of cactus biomimetic features energy-absorption box each section is set
Property and thickness, establish N group low speed collision model in conjunction with rigid wall；
N group low speed collision mode input LS-DYNA is carried out post-processing calculating, to peak after simulation analysis structure by step 3)
Be worth impact force, the total energy-absorbing of biomimetic features energy-absorption box, biomimetic features energy-absorption box quality, compression displacement, average impact, than energy-absorbing into
Row statistics calculates, using response phase method building peak value impact force, biomimetic features energy-absorption box quality, compression displacement, than energy-absorbing, average
The second-order response surface model of impact force, and calculate the related coefficient and root-mean-square error of the fitting of this five response surface models；
Step 4), using biomimetic features energy-absorption box quality, compression displacement, peak value impact force as constraint condition, averagely to touch
Power is hit and than energy-absorbing as optimization aim, with L, R1、T1、T2、T3As optimization design variable, constructs cactus biomimetic features and inhale
It can box multiple-objection optimization mathematical model；
Step 5) establishes cactus biomimetic features energy-absorption box multiple-objection optimization mathematical model in Isight software, uses
NSGA-II multi-objective optimization algorithm carries out multiple-objection optimization to the design variable of selection, obtains Pareto disaggregation, solves from Pareto
It concentrates and chooses one group of optimal solution；And biomimetic features energy-absorption box finite element model and low speed collision mould are established according to this group of optimal solution
Type substitutes into LS-DYNA and carries out post-processing calculating, the simulation analysis calculated result of the biomimetic features energy-absorption box after being optimized.
Five response surface models difference in the step 3) is as follows:
Biomimetic features energy-absorption box impact force peak FmaxResponse surface model are as follows:
The response surface model of biomimetic features energy-absorption box mass M are as follows:
The response surface model of biomimetic features energy-absorption box compression displacement S are as follows:
Biomimetic features energy-absorption box average impact FavResponse surface model are as follows:
Biomimetic features energy-absorption box is than energy-absorbing ESEAResponse surface model are as follows:
Cactus biomimetic features energy-absorption box multiple-objection optimization mathematical model in step 4) are as follows:
Those skilled in the art can understand that unless otherwise defined, all terms used herein (including skill
Art term and scientific term) there is meaning identical with the general understanding of those of ordinary skill in the utility model fields
Justice.It should also be understood that those terms such as defined in the general dictionary should be understood that with upper with the prior art
The consistent meaning of meaning hereinafter, and unless defined as here, will not with idealization or meaning too formal come
It explains.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
The utility model processed, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done,
It should be included within the scope of protection of this utility model.
Claims (5)
1. a kind of cactus biomimetic features energy-absorption box, which is characterized in that comprising be sequentially connected front box body, middle part box body and after
Portion's box body；
The front box body and automobile front beam crossbeam are connected, and rear portion box body and automobile buffer beam are connected；
The front box body, middle part box body, rear portion box body are in hexagonal star-shape, include 12 rectangular side panels, and 12
Six interior dog-ears and six outer dog-ears are formed between rectangular side panels；Six interior dog-ears and six outer dog-ears are rounded corner；
The length for enabling intersection between rectangular side panels and its adjacent rectangle side plate is the length of the rectangular side panels, rectangular side panels perpendicular to the friendship
The length on the side of line is the width of rectangular side panels；
The front box body, middle part box body, the width of rectangular side panels is equal in the box body of rear portion；
The length of rectangular side panels is greater than the length of rectangular side panels in the box body of front and is less than in the box body of middle part in the rear portion box body
The length of rectangular side panels；
The thickness of rectangular side panels is greater than the thickness of rectangular side panels in the box body of front and is less than in the box body of rear portion in the middle part box body
The thickness of rectangular side panels.
2. cactus biomimetic features energy-absorption box according to claim 1, which is characterized in that six outer dog-ears and six
The range of infolding angular radius is 0-6mm, and the range of the interior dog-ear angle is 30-100 degree.
3. cactus biomimetic features energy-absorption box according to claim 1, which is characterized in that the front box body, middle part box
The range of the width of rectangular side panels is 30-40mm in body, rear portion box body.
4. cactus biomimetic features energy-absorption box according to claim 1, which is characterized in that the front box body, middle part box
The ratio of the length of rectangular side panels is 1:3:2 in body, rear portion box body.
5. cactus biomimetic features energy-absorption box according to claim 1, which is characterized in that the front box body rectangular side panels
The range of thickness be 0.5-0.7mm, the range of the thickness of the middle part box body rectangular side panels is 0.7-0.9mm, the rear portion
The range of the thickness of box body rectangular side panels is 0.9-1.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822046847.XU CN209199098U (en) | 2018-12-07 | 2018-12-07 | A kind of cactus biomimetic features energy-absorption box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822046847.XU CN209199098U (en) | 2018-12-07 | 2018-12-07 | A kind of cactus biomimetic features energy-absorption box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209199098U true CN209199098U (en) | 2019-08-02 |
Family
ID=67428065
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822046847.XU Expired - Fee Related CN209199098U (en) | 2018-12-07 | 2018-12-07 | A kind of cactus biomimetic features energy-absorption box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209199098U (en) |
-
2018
- 2018-12-07 CN CN201822046847.XU patent/CN209199098U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190802 Termination date: 20211207 |