CN106739906A - A kind of fibre reinforced air suspension of passenger car C-shaped girder construction and its method for designing - Google Patents
A kind of fibre reinforced air suspension of passenger car C-shaped girder construction and its method for designing Download PDFInfo
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- CN106739906A CN106739906A CN201611158811.XA CN201611158811A CN106739906A CN 106739906 A CN106739906 A CN 106739906A CN 201611158811 A CN201611158811 A CN 201611158811A CN 106739906 A CN106739906 A CN 106739906A
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- girder construction
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- shaped beam
- passenger car
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
- B60G11/28—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/10—Type of spring
- B60G2202/15—Fluid spring
- B60G2202/152—Pneumatic spring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/12—Mounting of springs or dampers
- B60G2204/126—Mounting of pneumatic springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/011—Modular constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/70—Materials used in suspensions
- B60G2206/71—Light weight materials
- B60G2206/7101—Fiber-reinforced plastics [FRP]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/70—Materials used in suspensions
- B60G2206/71—Light weight materials
- B60G2206/7105—Porous materials, ceramics, e.g. as filling material
Abstract
The invention discloses a kind of fibre reinforced air suspension of passenger car C-shaped boom device, including：Main body, it is variable cross-section opening girder construction, in the central hollow section filled and process of the opening girder construction, and is bonded internal layer unidirectional lamination in the foam upper surface, in body exterior winding bonding outer layer unidirectional lamination；Central fastener, it is socketed in the carbon cloth outside in the middle part of the main body；End fasteners, the carbon cloth outside that it is socketed in the body end.The invention also discloses a kind of method for designing of fibre reinforced air suspension of passenger car C-shaped girder construction.
Description
Technical field
The present invention relates to air suspension of passenger car C-shaped beam field, and in particular to a kind of fibre reinforced air suspension of passenger car C-shaped
Girder construction and its method for designing.
Background technology
Suspension system has important shadow as the key component of automobile chassis to ride safety of automobile reliability and performance
Ring, be also the important research part of Hyundai Motor development.Airsuspension system due to its have coefficient of elasticity it is adjustable, lightweight,
The advantages of smooth ride, damping performance are good, it is more and more extensive in the application of bus industry.And C-shaped beam as in air suspension most
One of crucial part, is fixed by bolt in the middle of it with vehicle bridge, and two ends pass through air spring and damper and bus frame phase
Even, carry the weight of vehicle.Therefore rational design C-shaped girder construction and its method for designing for improve airsuspension system and
The performance of vehicle all has and is of great significance.
Country's C-shaped beam is generally processed by variable cross-section shaped steel at present, and its manufacture method mainly includes monoblock cast and steel
Two kinds of plate punch welding.Because the C-shaped beam of car is born compared with big load in use, therefore in order to meet intensity, rigidity
And durability, reliability requirements, its volume, when steel is used as material completely, can cause piece weight often than larger
It is excessive, so as to have influence on vehicle lightweight, make its power performance and the economy performance poor.C-shaped beam stress situation is complicated simultaneously, both
Bear tensile load and bear torsional load again, and traditional material such as cast iron, steel etc. are isotropic material, it is impossible to enough being directed to is received
Force direction is strengthened, and inevitably causes waste of material, and volume weight is excessive.
For problem present in traditional C-shaped beam, passenger train plan form is now often used based on China, propose that a kind of carbon fiber increases
Strong air suspension of passenger car C-shaped beam and its method for designing.
The content of the invention
The present invention has designed and developed a kind of fibre reinforced air suspension of passenger car C-shaped girder construction, goal of the invention of the invention
It is to solve the problems, such as that C-shaped beam can bear tensile load and torsional load simultaneously, and reaches lighting.
The present invention has designed and developed a kind of method for designing of fibre reinforced air suspension of passenger car C-shaped girder construction, the present invention
Goal of the invention be the winding angle for solving the problems, such as carbon cloth on C-shaped beam.
The present invention provide technical scheme be：
A kind of fibre reinforced air suspension of passenger car C-shaped girder construction, including：
Main body, it is variable cross-section opening girder construction, in the central hollow section filled and process of the opening girder construction, and
Internal layer unidirectional lamination is bonded in the foam upper surface, in body exterior winding bonding outer layer unidirectional lamination；
Central fastener, it is socketed in the carbon cloth outside in the middle part of the main body；
End fasteners, the carbon cloth outside that it is socketed in the body end.
Preferably, also include：
First reinforcing plate, it is removably connected with the central fastener, and is installed on the bottom of the main body；With
And
Vehicle bridge erection support, it is removably connected with the central fastener, and is installed on the top of the main body.
Preferably, also include：Second reinforcing plate, its two ends for being welded on the opening girder construction, described second strengthens
Bolt hole is set on plate, and it is used to connect air spring and shock absorber.
Preferably, the central fastener includes left sleeve and right sleeve；And
The central fastener is adhered to the carbon cloth outside in the middle part of the main body.
Preferably, the end fasteners include left U-shaped part and right U-shaped part, and the left U-shaped part and right U
Shape part is bolted fastening；And
The end fasteners are adhered to the carbon cloth outside of the body end.
Preferably, along the axis direction of the main body, internal layer unidirectional lamination is bonded in the foam upper surface, is made
The internal layer unidirectional lamination radially along the axis direction.
Preferably, the lap of splice at least 20mm between the adjacent outer layer unidirectional lamination；And
The end fasteners cover the outer layer carbon cloth width at least 50mm.
Preferably, the outer layer unidirectional lamination is 35 °~40 ° relative to the winding angle in C-shaped beam transversal direction.
A kind of method for designing of fibre reinforced air suspension of passenger car C-shaped girder construction, comprises the following steps：
Step one, the axle load T according to car wheel shaft, determine C-shaped beam two ends air spring installation center point stress F,In formula, wherein g is acceleration of gravity, KdIt is Dynamic Amplification Factor；
Step 2, determine the length of the C-shaped beam for the thickness of L, variable cross-section open beam be t, be highly h, width be b,
Apply identified central point stress F in the step one, according toOuter layer unidirectional lamination is obtained relative to C-shaped
The winding angle in beam transversal direction；
In formula,1≤i≤n,To determine in any i-th arbitrary region
In partial model principal stress vector,It is and in principal stress vector same plane and mistake center
Transversal tangent vector, wherein, the transversal is the intersection perpendicular to the section of C-shaped beam axis and C-shaped beam, αiIt is main stress vector
With C-shaped beam transversal tangent vectorAngle.
The present invention is had the advantage that compared with prior art：
1st, fibre reinforced air suspension of passenger car C-shaped beam of the invention cuts compared with existing C-shaped girder construction by change
Interstitital texture foamed material in the open beam steel construction of face, and enhancing is oriented using carbon fibre reinforced composite, realize
On the basis of bearing capacity is improved, while reducing C-shaped beam overall dimensions, the purpose of weight is alleviated, be more beneficial for realizing
Vehicle lightweight, so as to improve the power performance and the economy performance of car；
2nd, it is bonded carbon cloth the characteristics of Operation of Passenger Cars has flexural deformation and torsional deflection simultaneously for C-shaped beam
When be divided into along C-shaped beam axial direction internal layer unidirectional lamination and the outer layer unidirectional lamination along torsional load direction, use respectively
Come the moment of torsion that the pulling force and torsional deflection of resisting flexural deformation generation are produced.Not only more conform to C-shaped beam stress characteristic, Er Qiechong
Divide the characteristics of make use of unidirectional lamination intensity main along its warp-wise, on the basis of its bearing capacity is improved, it is fixed to realize
To enhancing, overcoming traditional isotropic material can not be strengthened for main Impact direction, cause physical dimension weight
The irrational shortcoming of excessive, materials'use, it is ensured that effective utilization of carbon fibre reinforced composite, is reducing the manufacturing
It is more favorable to realize lightweight while cost；
3rd, using carbon fibre reinforced composite adhesive technology, it is to avoid casting in conventional fabrication process, caused by welding
Influence of the quality problems to C-shaped joist support loading capability and reliability；
4th, carbon cloth thickness of thin, it is soft easily to cut, can also realize 100% bonding, energy for complex-shaped structure
C-shaped beam dimensional accuracy is enough effectively ensured, while making its surface smooth, is conducive to improving the fatigue strength of C-shaped beam, increase it
Durability；
5th, fibre reinforced air suspension of passenger car C-shaped beam involved in the present invention is by variable cross-section open beam central filler
Foamed material, is more beneficial for absorbing shock loading, improves suspension shock resistance.
6th, the method for designing of the fibre reinforced air suspension of passenger car C-shaped girder construction designed by the present invention can be easy and effective
Calculate winding angle of the outer layer unidirectional lamination relative to C-shaped beam transversal, be that engineer applied is given with can well implement
Property the guidance that quantifies, carbon fiber is arranged along body structure surface Tensile direction as far as possible, carbon fiber is played to greatest extent
Orientation humidification.
Brief description of the drawings
Fig. 1 is fiber reinforcement air suspension of passenger car C-shaped girder construction schematic diagram of the present invention.
Fig. 2 is fibre reinforced C-shaped beam body cross-section schematic diagram.
Fig. 3 is variable cross-section open beam schematic diagram.
Fig. 4 is C-shaped beam central fastener schematic diagram.
Fig. 5 is C-shaped beam end fastener schematic diagram.
Fig. 6 is fibre reinforced C-shaped beam size and stress diagram.
Fig. 7 is variable cross-section open beam sectional dimension parameter schematic diagram.
Fig. 8 is shell unit principal stress vectorWith corresponding C-shaped beam transversal tangent vectorAngle αiSchematic diagram.
Fig. 9 is inside and outside layer unidirectional lamination bonding direction and outer layer unidirectional lamination twining relative to C-shaped beam transversal
Around angle schematic diagram.
Figure 10 is the fibre reinforced C-shaped beam schematic diagram after the completion of assembling.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
The invention provides a kind of fibre reinforced air suspension of passenger car C-shaped girder construction, it has size small, lightweight,
Simple structure, bearing capacity is strong, while more meeting bearing type passenger car suspension loading characteristic, can realize orientation enhancing.
As shown in figure 1, the C-shaped girder construction that the present invention is provided is main by fibre reinforced C-shaped beam main body 100, C-shaped beam middle part
Fastener 110, C-shaped beam end fastener 120, the first reinforcing plate 131, vehicle bridge erection support 150, the second reinforcing plate 132 are constituted.
As shown in Figure 2 and Figure 3, fibre reinforced C-shaped beam main body 100 is by variable cross-section open beam 140, foamed material 200, interior
Layer unidirectional lamination 310, outer layer unidirectional lamination 320 are constituted, wherein, the central hollow section of variable cross-section open beam 140 is filled out
Foamed material 200 is filled, internal layer unidirectional lamination 310 is bonded in the upper surface of foamed material 200, make its warp-wise along C-shaped beam axis
Direction, while in the superficies of fibre reinforced C-shaped beam main body 100, from C-shaped beam middle part to two ends winding bonding outer layer Unidirectional
Fiber cloth 320, makes its warp-wise along due to the average maximum tension direction caused by torsional deflection.
As shown in figure 4, C-shaped beam central fastener 110 is made up of left sleeve 111, right sleeve 112, left sleeve 111, right set
Cylinder 112 is adhered to the middle part carbon fibre reinforced composite outside of fibre reinforced C-shaped beam main body 100, the first reinforcing plate 131, C-shaped
Beam central fastener 110 and vehicle bridge erection support 150 are connected by bolt with fibre reinforced C-shaped beam main body 100.
As shown in figure 5, C-shaped beam end fastener 120 is made up of left U-shaped part 121 and right U-shaped part 122, the He of left U-shaped part 121
Right U-shaped part 122 is adhered to the end carbon fibre reinforced composite outside of fibre reinforced C-shaped beam main body 100, and by bolt
123 are attached.
C-shaped beam central fastener 110 can be entered with C-shaped beam end fastener 120 to the carbon cloth being bonded on C-shaped beam
Row fastening, reduces the risk that adhesive failure causes carbon cloth to come off.C-shaped beam central fastener 110 can be to carbon fiber simultaneously
Enhancing composite is effectively protected, and by being bonded left and right sleeve, is effectively improved carbon fiber stressing conditions, can be reduced outstanding
Frame, so as to ensure its stable performance, extends service life in use to the abrasion of carbon fibre reinforced composite.
C-shaped beam central fastener 110, C-shaped beam end fastener 120 respectively with fibre reinforced C-shaped beam main body outer layer
Carbon fibre reinforced composite is bonded together by bonding agent, after completion to be solidified, is re-used as an entirety and is assembled.
In another embodiment, variable cross-section open beam 140 is processed using the method for punching press.
In another embodiment, foamed material 200 be structural foam, with density it is small, intensity is high the characteristics of, make
It is the packing material at the central hollow position of variable cross-section open beam 140, is not only easy to machine-shaping, and total constitution can be mitigated
Measure, bear certain load, while carbon cloth can be effectively bonded.
In another embodiment, carbon cloth is unidirectional lamination, through upwards have substantial amounts of carbon fiber wire,
Broadwise only has a small amount of and typically thin carbon fiber wire, and the tensile strength in warp direction is much larger than the tension on weft direction
Intensity.
In another embodiment, the second reinforcing plate 132 is welded on variable cross-section open beam two ends, and bolt hole is provided with thereon,
It is used to connect air spring and damper.
In another embodiment, variable cross-section open beam 140, C-shaped beam central fastener 110 and C-shaped beam end fastener
120 gluing of surfaces need to carry out annular knurl treatment, it is ensured that it is effective bonding with carbon cloth.
In another embodiment, in order to ensure the fastening effect of C-shaped beam end fastener 120, left U-shaped part 121 and right U
The width of the covering carbon cloth of shape part 122 should ensure that in more than 50mm.
In another embodiment, in order to improve the adhesive effect of carbon cloth, between adjacent outward layer unidirectional lamination
The lap of splice should ensure that in more than 20mm.
In another embodiment, the outer layer unidirectional lamination is relative to the winding angle in C-shaped beam transversal direction
35 °~40 °.
Embodiment 1
It is the invention also discloses a kind of method for designing of fibre reinforced air suspension of passenger car C-shaped girder construction including as follows
Step：
Step one, determine service load；According to the axle load T of wheel shaft in car operating condition, C-shaped beam two ends air bullet is determined
Spring installation center point stress F, F are calculated according to equation below：
In formula, wherein g is acceleration of gravity, KdIt is Dynamic Amplification Factor；And from force analysis, C
Ellbeam is primarily subjected to tensile load and torsional load；
The length of C-shaped beam described in step 2, primary election is L, the thickness of variable cross-section open beam is t, be highly h, width is b, C
Ellbeam size and stress diagram are as shown in Figure 6, variable cross-section open beam sectional dimension parameter schematic diagram is as shown in fig. 7, according to C-shaped
Beam relative dimensions, set up model, apply identified power F and C-shaped beam actual boundary in the step one, are analyzed calculating
Principal stress size and direction；
Principal stress vector under the coordinate system of the partial model of step 3, determination in any i-th arbitrary regionWherein, n is divided region quantity,In local coordinate system x/y plane in region；
Step 4, determine C-shaped beam outer surface transversal；Do perpendicular to the section of C-shaped beam axis, if being crossed to form with C-shaped beam
Dry transversal；
Transversal tangent vector is at center O in step 5, the region in step 3It is defined on xy
In plane, principal stress vector is calculatedWith corresponding C-shaped beam transversal tangent vectorAngle is αi(i=1,2 ... ... n), then
Step 6, determine winding angle of the outer layer unidirectional lamination relative to C-shaped beam transversal；Due to the master of different zones
Angle is not fully consistent between stress vector and C-shaped beam surface transversal, therefore calculates the average value of all angles, and is made
Winding angle for outer layer unidirectional lamination relative to C-shaped beam transversal.αiAverage valueFor
As relative to the winding angle of C-shaped beam transversal, n is divided region quantity to outer layer unidirectional lamination,
As shown in figure 9, for inside and outside layer unidirectional lamination is bonded direction and outer layer unidirectional lamination twining relative to C-shaped beam transversal
Around angle schematic diagram.
It is outstanding to fibre reinforced car air involved in the present invention by taking certain highway passenger vehicle long of money 12 as an example with reference to accompanying drawing
Frame C-shaped girder construction and its method for designing are described in further detail.
For the highway passenger vehicle selected by the present embodiment, C-shaped beam air spring installation center point stress F is calculated, its direction is erected
Straight downward, F sizes are calculated by equation below：Under actual operating mode, car rear axle axle load T is
15t, Dynamic Amplification Factor KdIt is 2.5, gravity acceleration g=9.8N/Kg brings to obtain F=91.88KN, C-shaped beam relative dimensions parameter point into
Not Wei L=1740mm, b=90mm, h=140mm, t=5mm, based on dimensions above, by setting up C-shaped beam partial model, then
Imposed load F and C-shaped beam actual boundary condition, are analyzed, and calculate principal stress size and direction；In the present embodiment, institute
Using unidirectional lamination processed by the unidirectional small tow carbon fibers of 100%, 12k, be 300g/m per Gram Mass2,
Thickness in monolayer is 0.167mm, and width is 150mm, and its tensile strength is 3400MPa, and elastic modelling quantity is 240GPa；Tied based on calculating
Really, each region principal stress vector is extracted, some sections perpendicular to C-shaped beam axis is done, if being crossed to form with C-shaped beam outer surface
Dry transversal, and principal stress vector and the angle crossed between regional center transversal tangent vector are calculated, so that it is determined that outer layer unidirectional carbon fiber
Wei Bu is relative to C-shaped beam transversal winding angle
Embodiment 2
It is the invention also discloses a kind of method for designing of fibre reinforced air suspension of passenger car C-shaped girder construction including as follows
Step：
Step one, determine service load.According to the axle load T of wheel shaft in car actual operating mode, determine that C-shaped beam two ends are empty
Gas spring installation center point stress F, F is calculated according to equation below：Wherein, g is acceleration of gravity, KdFor
Dynamic Amplification Factor；From force analysis, C-shaped beam is primarily subjected to tensile load and torsional load；
Step 2, FEM model is set up, computing unit principal stress size and direction.Primary election C-shaped beam length L, variable cross-section
Be open cantilever thickness t, height h, width b.C-shaped beam size and stress diagram as shown in Figure 6, variable cross-section open beam sectional dimension ginseng
Number schematic diagrames set up FEM model as shown in fig. 7, according to C-shaped beam relative dimensions, apply in step one identified power F with
And C-shaped beam actual boundary condition, carry out simulation analysis, computing unit principal stress size and direction.
Step 3, extraction unit principal stress vector；By finite element emulation software, i-th shell unit is extracted in shell unit
Principal stress vector under local coordinate systemWherein, n is divided shell unit sum,In shell unit office
In portion's coordinate system x/y plane；
Step 4, determine C-shaped beam outer surface transversal；Do perpendicular to the section of C-shaped beam axis, intersect with C-shaped beam outer surface
Form some transversals；
Step 5, computing unit principal stress are vectorial and cross angle between unit center C-shaped beam transversal；As shown in figure 8, in list
Transversal tangent vector is at first center O pointsIt is defined in x/y plane, principal stress vectorWith corresponding C-shaped beam
Transversal tangent vectorAngle is αi(i=1,2 ... ... n), then αiFor1≤i≤n, n are divided
Shell unit sum；
Step 6, determine winding angle of the outer layer unidirectional lamination relative to C-shaped beam transversal；Due to the master of different units
Angle is not fully consistent between stress vector and C-shaped beam surface transversal, therefore calculates the average value of all angles, and is made
Winding angle for outer layer unidirectional lamination relative to C-shaped beam transversal.αiAverage valueFor1≤i≤n,
As relative to the winding angle of C-shaped beam transversal, n is divided shell unit sum to outer layer unidirectional lamination, as shown in Figure 9
Illustrate relative to the winding angle of C-shaped beam transversal for inside and outside layer unidirectional lamination is bonded direction and outer layer unidirectional lamination
Figure.
It is outstanding to fibre reinforced car air involved in the present invention by taking certain highway passenger vehicle long of money 12 as an example with reference to accompanying drawing
Frame C-shaped girder construction and its method for designing are described in further detail.
For the highway passenger vehicle selected by the present embodiment, C-shaped beam air spring installation center point stress F is calculated, its direction is erected
It is straight downward.F sizes are calculated by equation below：
Under actual operating mode, car rear axle axle load T is 15t, Dynamic Amplification Factor KdIt is 2.5, gravity acceleration g=
9.8N/Kg, brings to obtain F=91.88KN into, and C-shaped beam relative dimensions parameter is respectively L=1740mm, b=90mm, h=140mm, t
=5mm.Based on dimensions above, C-shaped beam finite element model is set up by finite element software, then imposed load F and C-shaped beam reality
Border boundary condition, carries out simulation analysis, and computing unit principal stress size and direction.Unidirectional carbon employed in the present embodiment
Cloth is processed by the unidirectional small tow carbon fibers of 100%, 12k, is 300g/m per Gram Mass2, thickness in monolayer is
0.167mm, width is 150mm, and its tensile strength is 3400MPa, and elastic modelling quantity is 240GPa.
Based on finite element software result of calculation, each shell unit principal stress vector is extracted, do some perpendicular to C-shaped beam axis
Section, be crossed to form some transversals with C-shaped beam outer surface, and calculate principal stress vector with cross unit center transversal tangent vector it
Between angle, so that it is determined that outer layer unidirectional lamination is relative to C-shaped beam transversal winding angle
In the present embodiment, it is HyperMesh, Patran2010＆Nastran2010 to use simulation software, is programmed soft
Part is Compaq Visual Fortran 6.6, and operating system is Windows.
As shown in Fig. 1~10, C-shaped girder construction of the invention and its method for designing, the invention provides a kind of specific
Operating process, comprise the following steps：
Step a, liquidate variable cross-section open beam 140, left sleeve 111, right sleeve 112, left U-shaped part 121 and the right U for pressing
The gluing of surfaces of shape part 122 carries out annular knurl treatment, increases its surface roughness, is easy to effectively be bonded with carbon cloth, will be roughened
Cleaning of Parts after treatment is clean and is dried；
Step b, bonding agent is smeared in the inner surface of variable cross-section open beam 140, and the foamed material 200 of definite shape is filled
Inside variable cross-section open beam；
Step c, the unidirectional lamination cut out by drawing size is adhered at the upper end open of variable cross-section open beam 140
The surface of foamed material 200, and solidified；
Step d, treat that internal layer unidirectional lamination 310 solidifies substantially, after certain hardness, along relative to C-shaped beam
38 ° of winding bonding outer layer unidirectional laminations 320 of transversal, the adjacent two layers carbon cloth lap of splice is 30mm；
Step e, the C-shaped beam main body 100 of bonding carbon fibre reinforced composite is solidified, it is after the completion of solidification and right
Its surface carries out sanding and polishing；
Step f, the left sleeve 111 by C-shaped beam central fastener 110, right sleeve 112 and C-shaped beam end fastener
Left U-shaped part 121, the gluing of surfaces brushing bonded adhesives of right U-shaped part 122 in 120, and it is bonded in the corresponding positions of C-shaped beam main body 100
Put, in order to ensure the fastening effect of C-shaped beam end fastener 120, left U-shaped part 121 and right U-shaped part 122 covering carbon cloth
Width be 60mm, after a period of time to be solidified, C-shaped beam end fastener or so U-shaped part is fastened with bolt, complete with it is empty
Gas spring, damper, vehicle bridge etc. are assembled, and the C-shaped beam agent structure after the completion of assembling is as shown in Figure 10.
Although embodiment of the present invention is disclosed as above, it is not restricted to listed in specification and implementation method
With, it can be applied to various suitable the field of the invention completely, for those skilled in the art, can be easily
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the legend with description.
Claims (9)
1. a kind of fibre reinforced air suspension of passenger car C-shaped girder construction, it is characterised in that including：
Main body, it is variable cross-section opening girder construction, in the central hollow section filled and process of the opening girder construction, and in institute
Foam upper surface bonding internal layer unidirectional lamination is stated, in body exterior winding bonding outer layer unidirectional lamination；
Central fastener, it is socketed in the carbon cloth outside in the middle part of the main body；
End fasteners, the carbon cloth outside that it is socketed in the body end.
2. fibre reinforced air suspension of passenger car C-shaped girder construction as claimed in claim 1, it is characterised in that also include：
First reinforcing plate, it is removably connected with the central fastener, and is installed on the bottom of the main body；And
Vehicle bridge erection support, it is removably connected with the central fastener, and is installed on the top of the main body.
3. fibre reinforced air suspension of passenger car C-shaped girder construction as claimed in claim 2, it is characterised in that also include：Second
Reinforcing plate, its two ends for being welded on the opening girder construction set bolt hole in second reinforcing plate, and it is used to connect air
Spring and shock absorber.
4. fibre reinforced air suspension of passenger car C-shaped girder construction as claimed in claim 2 or claim 3, it is characterised in that the middle part
Fastener includes left sleeve and right sleeve；And
The central fastener is adhered to the carbon cloth outside in the middle part of the main body.
5. fibre reinforced air suspension of passenger car C-shaped girder construction as claimed in claim 4, it is characterised in that the end is tight
Firmware includes left U-shaped part and right U-shaped part, and the left U-shaped part and right U-shaped part are bolted fastening；And
The end fasteners are adhered to the carbon cloth outside of the body end.
6. fibre reinforced air suspension of passenger car C-shaped girder construction as claimed in claim 5, it is characterised in that along the main body
Axis direction, the foam upper surface be bonded internal layer unidirectional lamination, make the radial direction of the internal layer unidirectional lamination
Along the axis direction.
7. the fibre reinforced air suspension of passenger car C-shaped girder construction as any one of claim 1-3,5,6, its feature exists
In the lap of splice at least 20mm between the adjacent outer layer unidirectional lamination；And
The end fasteners cover the outer layer carbon cloth width at least 50mm.
8. fibre reinforced air suspension of passenger car C-shaped girder construction as claimed in claim 7, it is characterised in that the outer layer list
To carbon cloth relative to C-shaped beam transversal direction winding angle be 35 °~40 °.
9. a kind of method for designing of fibre reinforced air suspension of passenger car C-shaped girder construction, it is characterised in that comprise the following steps：
Step one, the axle load T according to car wheel shaft, determine C-shaped beam two ends air spring installation center point stress F,In formula, wherein g is acceleration of gravity, KdIt is Dynamic Amplification Factor；
Step 2, determine the length of the C-shaped beam for the thickness of L, variable cross-section open beam be t, be highly h, width be b, apply
Identified central point stress F in the step one, according toOuter layer unidirectional lamination is obtained to be cut relative to C-shaped beam
The winding angle in line direction；
In formula,1≤i≤n,To determine in any i-th arbitrary region
The principal stress vector of partial model,Be with the principal stress vector same plane in and cross center transversal
Tangent vector, wherein, the transversal is the intersection perpendicular to the section of C-shaped beam axis and C-shaped beam, αiIt is main stress vectorWith C
Ellbeam transversal tangent vectorAngle.
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| CN112060495A (en) * | 2019-06-11 | 2020-12-11 | 大赛璐塑料株式会社 | Injection molded article and method for producing same |
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| CN201272216Y (en) * | 2008-09-04 | 2009-07-15 | 郑州宇通集团有限公司 | C shaped bracket for automobile axle air suspension |
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| CN206242844U (en) * | 2016-12-15 | 2017-06-13 | 吉林大学 | A kind of fibre reinforced air suspension of passenger car C-shaped girder construction |
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| CN112060495A (en) * | 2019-06-11 | 2020-12-11 | 大赛璐塑料株式会社 | Injection molded article and method for producing same |
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