CN106970099A - The method and apparatus for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements - Google Patents
The method and apparatus for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/615—Specific applications or type of materials composite materials, multilayer laminates
Abstract
The invention discloses a kind of method for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements, comprise the following steps：1）Rubber-base composite material is cut into slices；2）Electron scanning micrograph is shot to the tangent plane of rubber-base composite material, the sectioning image of rubber-base composite material is obtained；3）The sectioning image of rubber-base composite material is sharpened, marginalisation handles and obtains the cartouche or circular contour or quadrangular configuration in chopped fiber section；4）Chopped fiber section judges the spatial orientation of chopped fiber in the base on above-mentioned tangent plane；5）Diameter and spatial orientation to numerous chopped fibers by obtaining carry out statistical analysis, obtain the diameter of chopped fiber and the regularity of distribution of spatial orientation.6）According to fibre diameter and the regularity of distribution of orientation, prepare a computer program, set up composite three dimensional and represent elementary volume, volume element.Beneficial effect：The equipment investment of use is few, and works well.
Description
Technical field：
Cut-fiber reinforcement rubber composite material three-dimensional representation volume elements is set up the present invention relates to technical field of sealing technology, more particularly to one kind
Method and apparatus.
Background technology：
The research and development of cut-fiber reinforcement rubber base encapsulant are the hot issues studied both at home and abroad at present.Research chopped fiber is answered at present
The method of condensation material mainly has theoretical, experiment and the class of computer simulation three.Theoretical method is compound in research individual staple fibers enhancing
Stress in material plays great role when transmitting.But when Research scale is expanded to plurality of fibers, the complex nature of the problem is fast
Speed rise, theoretical method is difficult to be applicable.Experimental method can obtain accurate data, but most composites are real at present
Proved recipe method is still rested in macro property test, can not disclose the interaction mechanism between meso-scale component.With
The development of computer technology, computer simulation method turns into what research short fiber composite material macro property was contacted with microscopical structure
One effective ways.In order to save computing resource, representative volume model of element is generally used at present, i.e., with a cycle
Local calculation model replaces block mold.Accurate Computer simulation results are obtained, it is necessary to which set up to reflect to greatest extent
The representative volume unit of material microscopical structure.This, which is accomplished by set up representative volume unit, can include real fiber
The microscopical structure information such as diameter, length, draw ratio, fibre space orientation.Wherein the diameter of fiber, length, draw ratio can
It is enough that test sign is carried out using more ripe method.
The performance of short fiber composite material is influenceed very big by chopped fiber spatial orientation.The change of short fiber orientation is to compound
Internal stress transmission, modulus of elasticity and the strain-stress relation of material have a significant impact.Accurately and efficiently determine chopped fiber
Orientation, sets up accurate representative volume unit, for predicting the mechanical property of short fiber composite material, optimizing composite
Preparation technology has extremely important meaning.The method that fibre space is orientated in current test compound material is divided into direct method of testing
And indirectly testing method.Direct method of testing typically uses advanced instrument, such as computed tomographic scanner directly tests fiber
Distribution in the base, and then the spatial orientation of fiber is obtained by statistics or image recognition.But directly method of testing into
This is very high, while the statistical disposition and identification to spatial image are rare larger.Another direct method of testing is to use mould stream
Chopped fiber distribution in software simulation and forecast composite, but this method is typically only applicable to the injection forming process, and it is big
Few fibers enhancing sealed composite material is produced using molding or calendering technology, and does not apply to this method.Indirectly testing method
Include tangent plane method and anisotropy method of testing again.Anisotropy method of testing passes through the performances such as the sound of test material, light, electricity, magnetic
Anisotropy, obtains an orientation coefficient to react the spatial orientation of fiber.But this method can only obtain one it is comprehensive
Coefficient, the orientation that every fiber can not be reflected.
Traditional tangent plane method processes a tangent plane on the composite, then counts the length of fiber oval cross section on tangent plane
Footpath ratio, calculates according to draw ratio and obtains fiber axis to the angle with tangent plane normal.Conventional method does not consider fiber in tangent plane
Interior orientation.Conventional method typically shoots tangent plane picture using light microscope simultaneously.Because light microscope multiplication factor has
The limit and poor in the identification of high magnification numbe hypograph, so the accuracy of imaging is not high.
The content of the invention：
The present invention is to provide a kind of based on high-precision chopped fiber spatial orientation in order to solve the problem of above-mentioned prior art is present
Identifying device and computer automatically process the three-dimensional representation elementary volume, volume element method for building up of program, to obtain closer to authentic material
Short fiber composite material three-dimensional representation elementary volume, volume element.
Specifically realized by following technical scheme：
The method for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements, comprises the following steps：
1）Rubber-base composite material is cut into slices；
2）Electron scanning micrograph is shot to the tangent plane of rubber-base composite material, the slice map of rubber-base composite material is obtained
Picture；
3）The sectioning image of rubber-base composite material is sharpened, marginalisation handles and obtains the ellipse wheel in chopped fiber section
Wide or circular contour or quadrangular configuration；
4）Chopped fiber section judges the spatial orientation of chopped fiber in the base on above-mentioned tangent plane；
5）Diameter and spatial orientation to numerous chopped fibers by obtaining carry out statistical analysis, obtain diameter and the space of chopped fiber
The regularity of distribution of orientation；
6）According to fibre diameter and the regularity of distribution of orientation, prepare a computer program, set up composite three dimensional and represent volume list
Member.
The further design of the method for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements is, described
Step 3）The minor axis length of the elliptic contour in middle short fiber section is set as the diameter of fiber.
The further design of the method for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements is, described
Step 3）In when chopped fiber section for it is circular when, then judge chopped fiber perpendicular to face earnestly；When chopped fiber section is quadrangle,
Then judge chopped fiber parallel to face earnestly；When ellipse is in chopped fiber section, the angle between chopped fiber axial direction and tangent plane normal direction
Degree determines that orientation of the fiber in tangent plane is true by fiber oval cross section long axis direction by the ratio of transverse and ellipse short shaft
It is fixed.
The further design of the method for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements is, described
Step 3）In when chopped fiber section for it is incomplete oval when, fiber-wall-element model information is obtained as follows：
3-1）Same rubber-base composite material is cut into slices twice and SEM photograph is shot, obtain two it is adjacent cut first cut
Face and the second tangent plane；
3-2）Cross-correlation analysis is carried out to the image of described two tangent planes, is identified as after same fiber, obtains complete short fibre
Section is tieed up, and obtains from the section fiber-wall-element model information.
The further design of the method for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements is, described
Step 3-2）Middle elder generation determines the size of region of search from the image of the first tangent plane, then directly corresponding in the second width image
The object most matched is found in region of search, oval cross section of the same fiber on the second width image is obtained.
The further design of the method for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements is, described
Step 6）Middle use spherical coordinate system defines the spatial orientation of chopped fiber, specifically includes following steps：
6-1）According to being sized generating cuboid matrix model, the cartesian coordinate parallel to three seamed edges of cube is set up
System；
6-2）Fibrillar center point position is randomly generated in cuboid Body regions, and random center position places parallel herein
In the standard fibers of coordinate direction；
6-3）The fibre diameter and the distribution probability function of spatial orientation obtained according to experiment, modification fibre diameter and space take
To；
6-4）Judge to add whether fiber interferes with existing fiber, if interference, counter x adds 1；Judge counter x numerical value
Whether m is more than, and m is a setting value, if x is not more than m, return to step（6-3）, readjust fibre diameter and space take
To；If x is more than m, counter x is reset, return to step（6-2）, regenerate the coordinate of fibrillar center point；If do not interfered,
Counter x is reset, and receives added fiber, and judges whether the volume fraction of fiber reaches setting value, if reached, is moved back
Go out program, if not provided, return to step（6-2）Proceed.
The further design of the method for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements is, described
Step 6-4）It is middle to judge that add fiber comprises the following steps with whether existing fiber interferes：
a）The center line segment of all fibres is extracted, the center line segment of the fiber is fine for the endless symmetry axis of cylindrical fibre
The part that dimension both ends of the surface are intercepted；
b）If adding minimum range between fibrillar center line segment and any existing fibrillar center line segment is all higher than involved two
The radius sum of root fiber, then judge that add fiber does not interfere with existing fiber, otherwise judges to add fiber and existing fiber
For interference.
The further design of the method for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements is, described
Step 1）In to rubber-base composite material carry out slicing treatment when, environment temperature control at -175 DEG C -125 DEG C.
The further design of the method for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements is, described
Step 1）Larger initial cut amount is first selected in during middle progress sectioning, and progressively reduces cutting quantity.
Using the device of the method for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements, the device includes
Deep cooling rotary microtome, environmental scanning electron microscope, computer workstation, it is characterised in that the deep cooling rotary microtome pair
Chopped fiber carries out sectioning and forms fibre section, and SEM carries out shooting scanning to fibre section, and will collection
Image information input and handled and recognized into computer workstation, obtain the spatial orientation parameter of chopped fiber, the ring
Border SEM includes the sample stage with cruise function, for once shooting same tangent plane different zones photo.
Beneficial effects of the present invention：
（1）The spatial orientation for testing chopped fiber using direct method of testing needs the equipment cost of both expensive.And the present invention is used
Equipment investment it is few, and work well.
（2）The electron microscope of use includes the sample stage with cruise function, can once shoot same tangent plane not same district
Domain photo, significantly improves testing efficiency.Using secondary electron image scanning electron microscope, imaging precision is higher.Using figure
As analysis software tells chopped fiber individual from image automatically, testing efficiency is further improved.
（3）The short fiber reinforced composite three-dimensional representation volume list for meeting and requiring is automatically generated using computer program
Member, saves plenty of time progress subsequent analysis research.
Brief description of the drawings：
Fig. 1 is a kind of method that representative volume unit is set up by chopped fiber microscopic structural parameters in the present invention.
Fig. 2 is the schematic diagram of the tangent plane analytic approach of present invention test chopped fiber spatial orientation.
Fig. 3 is the schematic diagram of fibrillar center line segment of the present invention.
Fig. 4 is the schematic diagram for finding fiber elliptic cross-section in the present invention on multiple tangent planes.
Fig. 5 is the oval cross section of fiber on the tangent plane SEM image and tangent plane of rubber matrix composite of the present invention.
Fig. 6 is the regularity of distribution of the fibre diameter represented using histogram.
Fig. 7 is the regularity of distribution being orientated using the fibre space of radar chart representation.(β statistical distribution)
Fig. 8 is the regularity of distribution being orientated using the fibre space of radar chart representation.(θ statistical distribution)
Fig. 9 is the short fiber composite material three-dimensional representation volume elements schematic diagram set up using the inventive method.
Embodiment：
The present invention is further illustrated below in conjunction with the accompanying drawings.
Such as Fig. 1, the method for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements of the present embodiment, including it is as follows
Step：
1）Rubber-base composite material is cut into slices.
2）Electron scanning micrograph is shot to the tangent plane of rubber-base composite material, cutting for rubber-base composite material is obtained
Picture.
3）The sectioning image of rubber-base composite material is sharpened, marginalisation handles and obtains the ellipse in chopped fiber section
Shape profile or circular contour or quadrangular configuration.
4）Chopped fiber section judges the spatial orientation of chopped fiber in the base on above-mentioned tangent plane.
5）Diameter to numerous chopped fibers by obtaining and spatial orientation carry out statistical analysis, obtain chopped fiber diameter and
The regularity of distribution of spatial orientation.
6）According to fibre diameter and the regularity of distribution of orientation, prepare a computer program, set up composite three dimensional and represent body
Product unit.
Step 3）The minor axis length of the elliptic contour in middle short fiber section is set as the diameter of fiber.
The principle of orientation for testing chopped fiber is：When chopped fiber is perpendicular to face earnestly, its cross sectional shape should be positive round；When
When chopped fiber is parallel to face earnestly, its cross sectional shape should be quadrangle；If chopped fiber forms an angle with tangent plane, chopped fiber is cut
Facial contour is in ellipse, as shown in Fig. 2, Fig. 5.It regard the line between farthest 2 points of distance on cross section profile as oval length
Axle, its length is a2, using the line between 2 points closest on cross section profile as oval short axle, its length is a1.It is fine
Angle between dimension axial direction and tangent plane normal direction passes through a2With a1Ratio determine, orientation of the fiber in tangent plane is by fiber elliptical cross section
Face long axis direction is determined, as shown in Fig. 2 β represents orientation of the fiber in tangent plane in figure, θ represents fiber axial direction and tangent plane method phase
Angle.Step 3）In when chopped fiber section for it is circular when, then judge chopped fiber perpendicular to face earnestly；When chopped fiber section is four sides
During shape, then judge chopped fiber parallel to face earnestly；When ellipse is in chopped fiber section, between chopped fiber axial direction and tangent plane normal direction
Angle determine that orientation of the fiber in tangent plane is by fiber oval cross section major axis side by the ratio of transverse and ellipse short shaft
To determination.
The section of fiber is not elliptic ideal in some special circumstances, tangent plane, and short fiber orientation can not use tangent plane
Analytic approach is recognized, and obtains fiber-wall-element model information, such as Fig. 4 as follows：
3-1）Same rubber-base composite material is cut into slices twice and SEM photograph is shot, obtain two it is adjacent cut first cut
Face and the second tangent plane；
3-2）Cross-correlation analysis is carried out to the image of two tangent planes, is identified as after same fiber, complete chopped fiber is obtained and cuts
Face, and obtain from the section fiber-wall-element model information.
Step 3-2）Middle elder generation determines the size of region of search from the image of the first tangent plane, then directly in the second width image
In find the object most matched in corresponding region of search, obtain oval cross section of the same fiber on the second width image.
Step 6）Middle use spherical coordinate system defines the spatial orientation of chopped fiber, specifically includes following steps：
6-1）According to being sized generating cuboid matrix model, the cartesian coordinate parallel to three seamed edges of cube is set up
System；
6-2）Fibrillar center point position is randomly generated in cuboid Body regions, and random center position places parallel herein
In the standard fibers of coordinate direction；
6-3）The fibre diameter and the distribution probability function of spatial orientation obtained according to experiment, modification fibre diameter and space take
To；
6-4）Judge to add whether fiber interferes with existing fiber, if interference, counter x adds 1；Judge counter x numerical value
Whether m is more than, and m is a setting value, if x is not more than m, return to step（6-3）, readjust fibre diameter and space take
To；If x is more than m, counter x is reset, return to step（6-2）, regenerate the coordinate of fibrillar center point；If do not interfered,
Counter x is reset, and receives added fiber, and judges whether the volume fraction of fiber reaches setting value, if reached, is moved back
Go out program, if not provided, return to step（6-2）Proceed.
Step 6-4）It is middle to judge that add fiber comprises the following steps with whether existing fiber interferes：
a）Extract the center line segment of all fibres, the center line segment of fiber for cylindrical fibre endless symmetry axis by fiber two
The part that end face is intercepted, referring to Fig. 3.
b）If minimum range is all higher than involved between addition fibrillar center line segment and any existing fibrillar center line segment
Two fibers radius sum, then judge that add fiber does not interfere with existing fiber, otherwise judges to add fiber with having
Fiber is interference, referring to Fig. 3.
Further, step 1）In to rubber-base composite material carry out slicing treatment when, environment temperature control -175 DEG C -
125℃.The present embodiment is controlled environment temperature at -150 DEG C using preferred scheme.
Step 1）Larger initial cut amount is first selected in during middle progress sectioning, and progressively reduces cutting quantity, to protect
Demonstrate,prove that the cross section that cuts out is smooth, smooth, edge impulse- free robustness.
Using the device for the method for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements, the device includes deep cooling
Rotary microtome, environmental scanning electron microscope, computer workstation, it is characterised in that deep cooling rotary microtome enters to chopped fiber
Row sectioning forms fibre section, and SEM carries out shooting scanning to fibre section, and the image of collection is believed
Breath input is handled and recognized into computer workstation, obtains the spatial orientation parameter of chopped fiber, and environment scan electronic shows
Micro mirror includes the sample stage with cruise function, for once shooting same tangent plane different zones photo.
Deep cooling rotary microtome in the present invention is cut using the full-automatic deep cooling runner of Leica RM2265 types of Lycra company
Piece machine, minimum slice thickness is 0.5 micron, and the refrigerant used is liquid nitrogen, and cryogenic temperature can be shown in real time.Scanning electron microscopy
Mirror model Jsm-6360lv, maximum accelerating potential is 30kv.Highest spatial resolution is 3 nanometers.Secondary electron imaging is supported,
With cruise sample stage.Computer workstation is Dell (Dell) server, and double to strong 3.0 processors, 2G internal memories, 1024M is only
Vertical video memory video card, 500G hard disks, 19 cun of liquid crystal displays.
First specific embodiment given below, the present embodiment uses 1 millimeter long acrylonitrile-butadiene rubber reinforced with Kevlar aramid fiber system.Survey
The specific implementation step for trying the regularity of distribution of chopped fiber spatial orientation is as follows：
（1）Take by being rolled into rubber-base composite material portion prepared by Zhang Gong's skill or mould pressing process, along calendering or mixing side
The rectangle specimens towards rubber based composites for cutting 1cm2cm × 0.2cm upwards are cut into slices；
（2）On the special carrier that rectangle sample is positioned over to deep cooling rotary microtome, start liquid nitrogen delivery pump, into working chamber
It is slowly introducing liquid nitrogen.When temperature reaches -150 DEG C, cutting is started along the direction being orientated perpendicular to chopped fiber main body.Selection is larger
Initial cut amount, and progressively reduce cutting quantity, it is ensured that the cross section that cuts out is smooth, smooth, edge impulse- free robustness；
（3）The image that tangent plane amplifies 1000 times or the above is shot using SEM, sample position is adjusted, continues to clap
Take the photograph.Ensure to include enough fibers in the photo group shot；
（4）The major diameter and minor axis of fiber in image are recognized using image analysis program, with reference on electron scanning micrograph
Scale and oval minor axis can obtain the diameter of fiber.Angle between fiber axial direction and tangent plane normal direction passes through a2With a1Ratio
Value is determined.Orientation of the fiber in tangent plane is determined by fiber oval cross section long axis direction.The principal direction that is distributed according to chopped fiber or
The principal direction of composite stress determines coordinate system, obtains the regularity of distribution of the spatial orientation angle of chopped fiber in the base；
（5）Orientation to numerous chopped fibers carries out statistical analysis, the final regularity of distribution for obtaining short fiber orientation, referring to Fig. 6, figure
7 and Fig. 8, the present embodiment is when short fibre content accounts for 2% exemplified by the regularity of distribution of chopped fiber diameter and spatial orientation.
It is fitted and is divided in the chopped fiber diameter and the distribution map of spatial orientation that are measured using least square method from experiment
Cloth function.The size of the rectangular body Model of representative volume element matrix is set as 1.05mm × 1.05mm × 1.05mm, is set up parallel to vertical
The cartesian coordinate system of three seamed edges of cube.Setting value m is set to 10000.Using the obtained diameter of fitting and spatial orientation
Distribution probability function.Computer program generation reflection actual fibers diameter and the spatial orientation developed using patent inventor are distributed
Representative volume unit, as shown in Figure 9.
The method and device equipment investment for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements of the present embodiment
It is few, and work well；And the electron microscope used includes the sample stage with cruise function, can once shoot with all
Face different zones photo, significantly improves testing efficiency.Using secondary electron image scanning electron microscope, imaging precision is more
It is high.Chopped fiber individual is told from image using image analysis software automatically, testing efficiency is further improved.On the other hand,
The short fiber reinforced composite three-dimensional representation elementary volume, volume element for meeting and requiring is automatically generated using computer program, when saving a large amount of
Between carry out subsequent analysis research.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, some improvement can also be made under the premise without departing from the principles of the invention, and these improvement also should be regarded as the present invention's
Protection domain.
Claims (10)
1. a kind of method for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements, it is characterised in that including following step
Suddenly：
1）Rubber-base composite material is cut into slices；
2）Electron scanning micrograph is shot to the tangent plane of rubber-base composite material, the slice map of rubber-base composite material is obtained
Picture；
3）The sectioning image of rubber-base composite material is sharpened, marginalisation handles and obtains the ellipse wheel in chopped fiber section
Wide or circular contour or quadrangular configuration；
4）Chopped fiber section judges the spatial orientation of chopped fiber in the base on above-mentioned tangent plane；
5）Diameter and spatial orientation to numerous chopped fibers by obtaining carry out statistical analysis, obtain diameter and the space of chopped fiber
The regularity of distribution of orientation；
6）According to fibre diameter and the regularity of distribution of orientation, prepare a computer program, set up composite three dimensional and represent volume list
Member.
2. the method according to claim 1 for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements, its feature
It is, the step 3）The minor axis length of the elliptic contour in middle short fiber section is set as the diameter of fiber.
3. the method according to claim 1 for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements, its feature
It is, the step 3）In when chopped fiber section for it is circular when, then judge chopped fiber perpendicular to face earnestly；When chopped fiber section is
During quadrangle, then judge chopped fiber parallel to face earnestly；When ellipse is in chopped fiber section, chopped fiber axial direction and tangent plane normal direction
Between angle determine that orientation of the fiber in tangent plane is long by fiber oval cross section by the ratio of transverse and ellipse short shaft
Direction of principal axis is determined.
4. the method according to claim 1 for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements, its feature
It is the step 3）In when chopped fiber section for it is incomplete oval when, fiber-wall-element model information is obtained as follows：
3-1）Same rubber-base composite material is cut into slices twice and SEM photograph is shot, obtain two it is adjacent cut first cut
Face and the second tangent plane；
3-2）Cross-correlation analysis is carried out to the image of described two tangent planes, is identified as after same fiber, obtains complete short fibre
Section is tieed up, and obtains from the section fiber-wall-element model information.
5. the method according to claim 4 for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements, its feature
It is the step 3-2）Middle elder generation determines the size of region of search from the image of the first tangent plane, then directly in the second width image
In find the object most matched in corresponding region of search, obtain oval cross section of the same fiber on the second width image.
6. the method according to claim 1 for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements, its feature
It is the step 6）Middle use spherical coordinate system defines the spatial orientation of chopped fiber, specifically includes following steps：
6-1）According to being sized generating cuboid matrix model, the cartesian coordinate parallel to three seamed edges of cube is set up
System；
6-2）Fibrillar center point position is randomly generated in cuboid Body regions, and random center position places parallel herein
In the standard fibers of coordinate direction；
6-3）The fibre diameter and the distribution probability function of spatial orientation obtained according to experiment, modification fibre diameter and space take
To；
6-4）Judge to add whether fiber interferes with existing fiber, if interference, counter x adds 1；Judge counter x numerical value
Whether m is more than, and m is a setting value, if x is not more than m, return to step（6-3）, readjust fibre diameter and space take
To；If x is more than m, counter x is reset, return to step（6-2）, regenerate the coordinate of fibrillar center point；If do not interfered,
Counter x is reset, and receives added fiber, and judges whether the volume fraction of fiber reaches setting value, if reached, is moved back
Go out program, if not provided, return to step（6-2）Proceed.
7. the method according to claim 1 for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements, its feature
It is the step 6-4）It is middle to judge that add fiber comprises the following steps with whether existing fiber interferes：
a）The center line segment of all fibres is extracted, the center line segment of the fiber is fine for the endless symmetry axis of cylindrical fibre
The part that dimension both ends of the surface are intercepted；
b）If add minimum range between the center line segment of fiber and any existing fibrillar center line segment be all higher than it is involved
The radius sum of two fibers, then judge that add fiber does not interfere with existing fiber, otherwise judges to add fiber and existing fibre
Tie up as interference.
8. the method according to claim 1 for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements, its feature
It is the step 1）In to rubber-base composite material carry out slicing treatment when, environment temperature control at -175 DEG C -125 DEG C.
9. the method according to claim 1 for setting up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements, its feature
It is the step 1）Larger initial cut amount is first selected in during middle progress sectioning, and progressively reduces cutting quantity.
10. using as described in claim any one of 1-9 set up cut-fiber reinforcement rubber composite material three-dimensional representation volume elements
The device of method, it is characterised in that including deep cooling rotary microtome, environmental scanning electron microscope, computer workstation, it is special
Levy and be that the deep cooling rotary microtome carries out sectioning to chopped fiber and forms fibre section, SEM is to fiber
Section carries out shooting scanning, and the image information of collection is inputted is handled and recognized into computer workstation, obtains short
The spatial orientation parameter of fiber, the environmental scanning electron microscope includes the sample stage with cruise function, for once clapping
Take the photograph same tangent plane different zones photo.
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