CN109829247A - A kind of novel bionic bumper assembly and its multidisciplinary design optimization method - Google Patents
A kind of novel bionic bumper assembly and its multidisciplinary design optimization method Download PDFInfo
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- CN109829247A CN109829247A CN201910159391.4A CN201910159391A CN109829247A CN 109829247 A CN109829247 A CN 109829247A CN 201910159391 A CN201910159391 A CN 201910159391A CN 109829247 A CN109829247 A CN 109829247A
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- bumper
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- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 41
- 238000005457 optimization Methods 0.000 title claims abstract description 29
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- 238000006073 displacement reaction Methods 0.000 claims description 6
- 210000000629 knee joint Anatomy 0.000 claims description 6
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- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
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- 239000000956 alloy Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 238000003050 experimental design method Methods 0.000 claims description 3
- 238000013178 mathematical model Methods 0.000 claims description 3
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- 239000011159 matrix material Substances 0.000 abstract description 15
- 238000007747 plating Methods 0.000 abstract description 3
- 230000002633 protecting effect Effects 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract 1
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- MYWUZJCMWCOHBA-VIFPVBQESA-N methamphetamine Chemical compound CN[C@@H](C)CC1=CC=CC=C1 MYWUZJCMWCOHBA-VIFPVBQESA-N 0.000 description 4
- 238000012913 prioritisation Methods 0.000 description 3
- 206010039203 Road traffic accident Diseases 0.000 description 2
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Abstract
The invention discloses a kind of novel bionic bumper assembly and its multidisciplinary design optimization methods, include bionical bumper, left bionical energy-absorption box and right bionical energy-absorption box；Bionical bumper is arc-shaped, includes preceding cover plate, bumper matrix and rear cover plate, preceding cover plate, rear cover plate are separately positioned on bumper matrix front and rear sides and bumper matrix is connected；Left bionical energy-absorption box, right bionical energy-absorption box are in the open column shape of both ends open, and comprising four sides up and down, upper side and downside are surface plate, and left side and right side are corrugated plating.Invention additionally discloses a kind of cooperative optimization methods; multidisciplinary collaboration Optimized model based on pedestrian protecting and vehicle crash-worthiness building novel bionic bumper assembly; it is optimized by the design variable to bumper assembly; under the premise of guaranteeing lightweight and control cost, further strengthens the protective effect to pedestrian and promote vehicle crash-worthiness.
Description
Technical field
The invention belongs to vehicle passive safeties to protect field, and in particular to a kind of novel bionic bumper assembly and its more
Section's optimization method.
Background technique
With the sustainable development of global economy, the sales volume and yield of vehicle are all constantly increasing, and traffic accident is also frequently sent out
It is raw.It is shown according to relevant departments' data statistics, in motor-vehicle accident, protection and vehicle of the bumper assembly to passenger and pedestrian
Body self-inflicted injury plays an important role.Seen automobile rear bumper is mostly hollow shell structure at present, energy-absorbing effect and anti-
Impact capacity is bad, and function is more single, and effective protection pedestrains safety is unable to when bumping against pedestrian, touches when with other vehicles
Car body itself and passenger cause life and property loss also vulnerable to serious damage when hitting.
Summary of the invention
The purpose of the present invention is for the deficiency being previously mentioned in background technique, provide a kind of automobile to protect after buffering energy-absorbing step by step
Dangerous thick stick and optimization method.
The present invention uses following technical scheme to solve above-mentioned technical problem:
A kind of novel bionic bumper assembly includes bionical bumper, left bionical energy-absorption box and right bionical energy-absorption box；
The bionical bumper is arc-shaped, includes preceding cover plate, bumper matrix and rear cover plate, wherein the preceding cover plate,
Cover plate is separately positioned on bumper matrix front and rear sides afterwards and the bumper matrix is connected；
The bionical energy-absorption box in the left side, right bionical energy-absorption box are in the open column shape of both ends open, comprising four sides up and down
Face, upper side and downside are surface plate, and left side and right side are that corrugated plating, wave groove are parallel to upper side；It is described bionical
The one end of both ends respectively with one end of left bionical energy-absorption box, right bionical energy-absorption box is connected on the inside of bumper.
As a kind of further prioritization scheme of novel bionic bumper assembly of the present invention, the bionical energy-absorption box in the left side, the right side
Bionical energy-absorption box is all made of carbon steel and is made.
As a kind of further prioritization scheme of novel bionic bumper assembly of the present invention, the preceding cover plate, rear covering
Plate is all made of aluminum alloy materials and is made, and the bumper matrix is made of foamed aluminium material.
As a kind of further prioritization scheme of novel bionic bumper assembly of the present invention, the bumper matrix is by indent
Hexagon unit cell array forms, and the indent hexagon unit cell includes top margin, bottom edge and four bevel edges, wherein top margin and bottom edge
Parallel and length is 13mm, is highly 12mm, and the angle of the angle of top margin and two bevel edges, bottom edge and two bevel edges is
67.5 degree, the thickness of top margin, bottom edge and four bevel edges is 0.8mm；The preceding cover plate with a thickness of 0.5mm, rear cover plate
With a thickness of 1mm；The thickness of four sides of bionical energy-absorption box is 1mm.
The invention also discloses a kind of multidisciplinary design optimization methods of novel bionic bumper assembly comprising the steps of:
Step 1) chooses optimal Latin hypercube experimental design method in Isight optimization software, in each optimization of selection
60 groups of design sample points are uniformly chosen in the preset threshold range of design variable parameter；The design variable parameter for needing to optimize
Covering plate thickness T1, indent hexagonal honeycomb structure unit cell member thickness T2, rear covering plate thickness T3, bionical energy-absorption box before respectively
Thickness T4；
Step 2 establishes the CAD model of novel bionic bumper assembly in Catia software, is conducted into Hypermesh software
Middle carry out pre-treatment, and the material properties and thickness of each section are set；By means of pedestrian shank model and rigid wall, according to step
1) sample point chosen establishes 60 groups of pedestrian shank-calculation models of vehicle collision and 60 groups of rigid walls-frontal crash of vehicles model respectively；
The collision model established submission LS-DYNA is solved, obtains 60 groups of shank protection simulation results and 60 by step 3)
Group frontal crash of vehicles simulation result, obtains whole accordingly results；
Step 4) is protected for pedestrian shank, and by second order polynomial Response surface meth od, comprehensive shank protection simulation result is established
Proximal ends of tibia peak acceleration, knee joint maximum shear displacement, knee joint maximum bend angle second-order response surface model；For
Frontal crash of vehicles, by second order polynomial Response surface meth od, composite vehicle head-on crash simulation result establishes pilot set
Lower section acceleration, the intrusion displacement of front panel longitudinal direction, rigid wall active force and bumper assembly energy-absorbing second-order response surface model；Structure
Build the second-order response surface model of novel bionic bumper assembly；
The multidisciplinary collaboration of step 5), the second-order response surface model foundation novel bionic bumper assembly according to step 4) building is excellent
Change mathematical model, main system optimization aim is referred to improve the comprehensive performance and lightweight of bumper assembly with comprehensive performance
Mark and bumper assembly quality are main system optimization target, and two subsystems optimization problem is pedestrian shank protection and automobile respectively
Head-on crash, using between each design variable optimal value and system level design variable difference and minimum value as optimization aim, warp
After iteration several times, the optimizing to solution is completed, optimum results are obtained.
The invention has the benefit that
1, the present invention proposes a kind of novel bionic bumper assembly and its multidisciplinary design optimization method, efficiently solves collision accident
The defects of middle car body intrusion volume is excessive, energy-absorbing effect is bad, pedestrian protecting effect is to be improved；
2, Multidisciplinary Optimization is carried out to bionical bumper assembly using multidisciplinary optimization algorithm, further increases New-safety
The energy absorption characteristics and pedestrian protecting effect of thick stick.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of novel bionic bumper assembly of the present invention；
Fig. 2 is the schematic cross-section of left bionical energy-absorption box in the present invention；
Fig. 3 is the formation schematic diagram of bumper matrix in the present invention.
In figure, cover plate before 1-, 2- bumper matrix, cover plate after 3-, the left bionical energy-absorption box of 4-, the right bionical energy-absorbing of 5-
Box.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing:
The present invention can be embodied in many different forms, and should not be assumed that be limited to the embodiments described herein.On the contrary, providing
These embodiments are thoroughly and complete to make the disclosure, and will give full expression to the scope of the present invention to those skilled in the art.
In the accompanying drawings, for the sake of clarity it is exaggerated component.
As shown in Figure 1, including bionical bumper, left bionical suction the invention discloses a kind of novel bionic bumper assembly
It can box and right bionical energy-absorption box；
The bionical bumper is arc-shaped, includes preceding cover plate, bumper matrix and rear cover plate, wherein the preceding cover plate,
Cover plate is separately positioned on bumper matrix front and rear sides afterwards and the bumper matrix is connected；
As shown in Fig. 2, the bionical energy-absorption box in the left side, right bionical energy-absorption box are in the open column shape of both ends open, comprising up and down
Four sides in left and right, upper side and downside are surface plate, and left side and right side are that corrugated plating, wave groove are parallel to upside
Face；The one end of both ends respectively with one end of left bionical energy-absorption box, right bionical energy-absorption box is connected on the inside of the bionical bumper.
The bionical energy-absorption box in the left side, right bionical energy-absorption box are all made of carbon steel and are made, and preceding cover plate, rear cover plate are all made of
Aluminum alloy materials are made, and the bumper matrix is made of foamed aluminium material.
As shown in figure 3, the bumper matrix is formed by indent hexagon unit cell array, the indent hexagon unit cell packet
Containing top margin, bottom edge and four bevel edges, wherein top margin is parallel with bottom edge and length is 13mm, is highly 12mm, top margin and two
The angle of the angle of bevel edge, bottom edge and two bevel edges is 67.5 degree, and the thickness of top margin, bottom edge and four bevel edges is 0.8mm；
The preceding cover plate with a thickness of 0.5mm, rear cover plate with a thickness of 1mm；The thickness of four sides of bionical energy-absorption box is equal
For 1mm.
The invention also discloses a kind of multidisciplinary design optimization methods of novel bionic bumper assembly comprising the steps of:
Step 1) chooses optimal Latin hypercube experimental design method in Isight optimization software, in each optimization of selection
60 groups of design sample points are uniformly chosen in the preset threshold range of design variable parameter；The design variable parameter for needing to optimize
Covering plate thickness T1, indent hexagonal honeycomb structure unit cell member thickness T2, rear covering plate thickness T3, bionical energy-absorption box before respectively
Thickness T4；
Step 2 establishes the CAD model of novel bionic bumper assembly in Catia software, is conducted into Hypermesh software
Middle carry out pre-treatment, and the material properties and thickness of each section are set；By means of pedestrian shank model and rigid wall, according to step
1) sample point chosen establishes 60 groups of pedestrian shank-calculation models of vehicle collision and 60 groups of rigid walls-frontal crash of vehicles model respectively；
The collision model established submission LS-DYNA is solved, obtains 60 groups of shank protection simulation results and 60 by step 3)
Group frontal crash of vehicles simulation result, obtains whole accordingly results；
Step 4) is protected for pedestrian shank, and by second order polynomial Response surface meth od, comprehensive shank protection simulation result is established
Proximal ends of tibia peak acceleration, knee joint maximum shear displacement, knee joint maximum bend angle second-order response surface model；For
Frontal crash of vehicles, by second order polynomial Response surface meth od, composite vehicle head-on crash simulation result establishes pilot set
Lower section acceleration, the intrusion displacement of front panel longitudinal direction, rigid wall active force and bumper assembly energy-absorbing second-order response surface model；Structure
Build the second-order response surface model of novel bionic bumper assembly；
The multidisciplinary collaboration of step 5), the second-order response surface model foundation novel bionic bumper assembly according to step 4) building is excellent
Change mathematical model, main system optimization aim is referred to improve the comprehensive performance and lightweight of bumper assembly with comprehensive performance
Mark and bumper assembly quality are main system optimization target, and two subsystems optimization problem is pedestrian shank protection and automobile respectively
Head-on crash, using between each design variable optimal value and system level design variable difference and minimum value as optimization aim, warp
After iteration several times, the optimizing to solution is completed, optimum results are obtained.
What has been described above is only a preferred embodiment of the present invention, for those skilled in the art,
Various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also used as this hair
Bright protection scope.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910159391.4A CN109829247A (en) | 2019-03-04 | 2019-03-04 | A kind of novel bionic bumper assembly and its multidisciplinary design optimization method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910159391.4A CN109829247A (en) | 2019-03-04 | 2019-03-04 | A kind of novel bionic bumper assembly and its multidisciplinary design optimization method |
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| Publication Number | Publication Date |
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| CN109829247A true CN109829247A (en) | 2019-05-31 |
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|---|---|---|---|---|
| JP2009056857A (en) * | 2007-08-30 | 2009-03-19 | Aisin Seiki Co Ltd | Bumper device for vehicle |
| JP2010018047A (en) * | 2008-07-08 | 2010-01-28 | Kobe Steel Ltd | Bumper system of vehicle |
| CN103640629A (en) * | 2013-12-26 | 2014-03-19 | 芜湖中瑞汽车零部件有限公司 | Front auxiliary frame with anticollision structure |
| CN203681452U (en) * | 2014-01-14 | 2014-07-02 | 武汉凌云汽车零部件有限公司 | Energy absorption box of bumper |
| CN103921746A (en) * | 2014-04-24 | 2014-07-16 | 厦门理工学院 | Car crash front-rear synchronous energy absorption device |
| CN203996061U (en) * | 2014-07-31 | 2014-12-10 | 上海汽车集团股份有限公司 | Federal bumper and automobile |
| CN106184085A (en) * | 2016-06-30 | 2016-12-07 | 南京航空航天大学 | A kind of closed loop negative poisson's ratio construction car security system and method for designing |
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2019
- 2019-03-04 CN CN201910159391.4A patent/CN109829247A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009056857A (en) * | 2007-08-30 | 2009-03-19 | Aisin Seiki Co Ltd | Bumper device for vehicle |
| JP2010018047A (en) * | 2008-07-08 | 2010-01-28 | Kobe Steel Ltd | Bumper system of vehicle |
| CN103640629A (en) * | 2013-12-26 | 2014-03-19 | 芜湖中瑞汽车零部件有限公司 | Front auxiliary frame with anticollision structure |
| CN203681452U (en) * | 2014-01-14 | 2014-07-02 | 武汉凌云汽车零部件有限公司 | Energy absorption box of bumper |
| CN103921746A (en) * | 2014-04-24 | 2014-07-16 | 厦门理工学院 | Car crash front-rear synchronous energy absorption device |
| CN203996061U (en) * | 2014-07-31 | 2014-12-10 | 上海汽车集团股份有限公司 | Federal bumper and automobile |
| CN106184085A (en) * | 2016-06-30 | 2016-12-07 | 南京航空航天大学 | A kind of closed loop negative poisson's ratio construction car security system and method for designing |
| CN106570255A (en) * | 2016-10-27 | 2017-04-19 | 南京航空航天大学 | Optimization method of negative Poisson ratio energy absorption structure based on pedestrian protection |
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Application publication date: 20190531 |