CN204228485U - A kind of rubber plane shearing experiment exemplar - Google Patents
A kind of rubber plane shearing experiment exemplar Download PDFInfo
- Publication number
- CN204228485U CN204228485U CN201420584059.5U CN201420584059U CN204228485U CN 204228485 U CN204228485 U CN 204228485U CN 201420584059 U CN201420584059 U CN 201420584059U CN 204228485 U CN204228485 U CN 204228485U
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- China
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- rubber
- measured
- grip plate
- shearing experiment
- plane shearing
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- 238000002474 experimental method Methods 0.000 title claims abstract description 27
- 238000010008 shearing Methods 0.000 title claims abstract description 20
- 238000005987 sulfurization reaction Methods 0.000 claims abstract description 9
- 238000010330 laser marking Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000013536 elastomeric material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013401 experimental design Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of rubber plane shearing experiment exemplar, comprise rubber to be measured and be arranged on the grip plate at rubber two ends to be measured, the sulfuration of described grip plate is fixed on rubber to be measured.Described rubber to be measured comprises middle extension section and the connecting portion at two ends, and extension section is planar structure, and connecting portion is U-shaped structure, and one end of described grip plate is clipped in U-shaped structure, and is fixed by sulfuration.The utility model solves the problem that rubber to be measured in existing rubber plane shearing experiment is not easy to clamp, and structure is simple, and easy for installation, measuring accuracy is high, can be widely used in rubber plane shearing experiment field.
Description
Technical field
The utility model relates to rubber detection field, especially relates to a kind of rubber plane shearing experiment exemplar.
Background technology
Rubber components is as vibration damping and energy-absorbing element, and in automobile and other industries widespread use, its mechanical property of Accurate Determining has great importance.Elastomeric material mechanical property is complicated, has obvious nonlinear characteristic, will describe accurately it, carries out finite element simulation and be modeled as product design service, at least need uniaxial tension, wait biaxial stretch-formed and planar stretch/shearing experiment three class experimental data.Plane shear experiment is a kind of relatively new experimental technique, requires that sample is in drawing process, and the part or all of of exemplar extends at draw direction, and thickness direction freely shortens, and Width, without distortion, obtains purer a kind of shear strain state.In practice, it is very difficult for obtaining a kind of so desirable deformation state, particularly higher requirement is proposed to the preparation of exemplar and clamping, although propose some experimental programs in the literature, but still reliably can not meet requirement of experiment, currently also without corresponding GB and international standard, experiment to be instructed.
Elastomeric material experimental design is the basis of rubber mechanics property analysis and modeling, and as one of basic experiment, shearing experiment must obtain enough pure strain and stress state, and the stress and strain of this state is easy Measurement accuracy.The length requirement of the draw direction of shearing experiment print is at least less than 1/5 of width, and for convenience of the measurement of experiment, the width of print is generally greater than 100mm.Usually, shearing experiment print is normally tailored by the plaques of standard, by holder to experimental machine is tested.When current rubber laboratory holder is substantially based on the narrow batten of grab tensile type, part fixture can gripping width at the batten of about 40mm, but substantially do not have fixture reliably, without slippage can clamp the wide rubber batten of more than 100mm.Use the above-mentioned print of holder, print is after clamping, and not yet stretch and just produce obvious horizontal local deformation, part exemplar also can produce larger warping phenomenon, causes the cross-sectional area bearing stretching of print to change, affects the calculating of drawing stress; In experimentation, more or less all there is the phenomenon of sample from fixture slippage simultaneously, cause measuring acquisition strain and be greater than real material strain, simultaneously due to the local slippage of sample, to cause sample to be out of shape in drawing process uneven, can not obtain desirable strain regime.
Utility model content
The purpose of this utility model is to provide a kind of rubber plane shearing experiment exemplar, solves existing rubber plane detection rubber and is not easy clamping, easily get loose, cause the problem that testing result error is large.
The utility model solves the technical scheme that its technical matters adopts: a kind of rubber plane shearing experiment exemplar, and comprise rubber to be measured and be arranged on the grip plate at rubber two ends to be measured, the sulfuration of described grip plate is fixed on rubber to be measured.
Further, described rubber to be measured comprises middle extension section and the connecting portion at two ends, and extension section is planar structure, and connecting portion is U-shaped structure, and one end of described grip plate is clipped in U-shaped structure, and is fixed by sulfuration.
Preferably, the distance between the grip plate of described two ends is less than 1/5th of rubber width to be measured.The thickness of described rubber to be measured is greater than 2mm, and the thickness of grip plate is greater than 2mm.The length that described grip plate stretches out connecting portion is greater than 20mm.
For convenience of adopting the image method of Video Extensometer etc. to measure, the center of described extension section is provided with the rectangular node scribed with laser marking machine.
The beneficial effects of the utility model: by the two ends sulfuration grip plate at rubber to be measured, grip plate is connected with cupping machine, connects reliable, and not easily causes rubber local deformation to be measured, rubber to be measured homogeneous deformation in tension test, improves the measuring accuracy of rubber tensile power to be measured.Described rubber center to be measured is provided with the rectangular node scribed with laser marking machine, and the convenient image method of Video Extensometer etc. that adopts is measured.
Below with reference to drawings and Examples, the utility model is described in detail.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model.
Fig. 2 is the utility model A-A schematic cross-section.
Embodiment
Embodiment, as shown in Figure 1 and Figure 2, a kind of rubber plane shearing experiment exemplar, comprise rubber 1 to be measured and be arranged on the grip plate 2 at rubber two ends to be measured, the sulfuration of described grip plate 2 is fixed on rubber 1 to be measured.
Described rubber to be measured 1 comprises middle extension section 11 and the connecting portion 12 at two ends, and extension section 11 is planar structure, and connecting portion 12 is U-shaped structure, and one end of described grip plate 2 is clipped in U-shaped structure, and is fixed by sulfuration.
Distance between described two ends grip plate 2 is less than 1/5th of rubber width to be measured.The thickness of described rubber to be measured 1 is greater than 2mm, and the thickness of grip plate 2 is greater than 2mm.The length that described grip plate 2 stretches out connecting portion 12 is greater than 20mm.The center of described extension section 11 is provided with the rectangular node 3 scribed with laser marking machine.
Exemplar beam overall 100mm, draw direction total length 50mm, the rubber to be measured of two sheet metal distance from bottom 12mm is example.The thickness of rubber tensile portion 11, connecting portion 12 is 2mm, and extension section 11 and connecting portion 12 transition adopt 2mm fillet.The horizontal edge (benchmark B) of rubber center section to be measured is vertical with draw direction limit, also will have the good depth of parallelism bottom grip plate with benchmark B.Perpendicular on the xsect (A-A cross section) of thickness direction, the center of two blocks of grip plates 2, the center of rubber to be measured 1 meet the requirement of symmetry shown in Fig. 2.Distance due to two blocks of grip plates 2 is 12mm, and the width of rubber 1 to be measured is 100mm, and tensile elongation and the width ratio of rubber 1 to be measured are less than 1/5, can ensure the requirement of shearing experiment.Square net 3 is scribed, the horizontal and vertical centerline parallel of mesh lines and rubber to be measured 1 at the center section laser marking machine of rubber 1 to be measured.When testing, the grip plate 2 of this rubber 1 to be measured being clamped on two chucks up and down of tensile testing machine respectively, needing during clamping to ensure that the center line of rubber 1 to be measured aligns with the center line of upper lower clamp.In stretching experiment, can the relative displacement of direct above lower chuck be the tensile elongation (precision may be slightly poor) of sample, also the measurement of mechanical extensometer or Video Extensometer can be adopted to measure the distortion of the mesh of sample middle part, calculate the stretcher strain of sample.The drawing stress of rubber 1 to be measured is obtained by the area of tensile force divided by the lateral cross section of rubber middle part.
Claims (6)
1. a rubber plane shearing experiment exemplar, it is characterized in that: comprise rubber to be measured (1) and be arranged on the grip plate (2) at rubber two ends to be measured, the sulfuration of described grip plate (2) is fixed on rubber to be measured (1).
2. rubber plane shearing experiment exemplar as claimed in claim 1, it is characterized in that: described rubber to be measured (1) comprises middle extension section (11) and the connecting portion (12) at two ends, extension section (11) is planar structure, connecting portion (12) is U-shaped structure, one end of described grip plate (2) is clipped in U-shaped structure, and is fixed by sulfuration.
3. rubber plane shearing experiment exemplar as claimed in claim 1 or 2, is characterized in that: the distance between described two ends grip plate (2) is less than 1/5th of rubber width to be measured.
4. rubber plane shearing experiment exemplar as claimed in claim 1, is characterized in that: the thickness of described rubber to be measured (1) is greater than 2mm, and the thickness of grip plate (2) is greater than 2mm.
5. rubber plane shearing experiment exemplar as claimed in claim 3, is characterized in that: the length that described grip plate (2) stretches out connecting portion (12) is greater than 20mm.
6. rubber plane shearing experiment exemplar as claimed in claim 1, is characterized in that: the center of described extension section (11) is provided with the rectangular node (3) scribed with laser marking machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420584059.5U CN204228485U (en) | 2014-10-10 | 2014-10-10 | A kind of rubber plane shearing experiment exemplar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420584059.5U CN204228485U (en) | 2014-10-10 | 2014-10-10 | A kind of rubber plane shearing experiment exemplar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204228485U true CN204228485U (en) | 2015-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420584059.5U Active CN204228485U (en) | 2014-10-10 | 2014-10-10 | A kind of rubber plane shearing experiment exemplar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204228485U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675427A (en) * | 2016-04-11 | 2016-06-15 | 沈阳工业大学 | Slag slurry erosion wear testing machine for rubber material |
-
2014
- 2014-10-10 CN CN201420584059.5U patent/CN204228485U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675427A (en) * | 2016-04-11 | 2016-06-15 | 沈阳工业大学 | Slag slurry erosion wear testing machine for rubber material |
| CN105675427B (en) * | 2016-04-11 | 2018-04-24 | 沈阳工业大学 | A kind of slurry tester for testing scouring wear for elastomeric material |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |