CN101477111A - Method for testing tire rubber complex stress condition mechanical performance and its special equipment - Google Patents
Method for testing tire rubber complex stress condition mechanical performance and its special equipment Download PDFInfo
- Publication number
- CN101477111A CN101477111A CNA2008101626680A CN200810162668A CN101477111A CN 101477111 A CN101477111 A CN 101477111A CN A2008101626680 A CNA2008101626680 A CN A2008101626680A CN 200810162668 A CN200810162668 A CN 200810162668A CN 101477111 A CN101477111 A CN 101477111A
- Authority
- CN
- China
- Prior art keywords
- test
- strain
- sample
- stress
- anchor clamps
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention relates to a set of complete experiment system for estimating the mechanical property of tyre rubber in complex stress state. The experiment system comprises material tests including uniaxial tension test, equal biaxial tension test and planar tension (pure shearing) test, and the data recorded by the tests include CCD images (including time), tension force and a time curve. The experiment system comprises the following steps: adopting a digital image processing program to obtain a relation curve of strain and time; obtaining stress strain curve data through time corresponding relation; and obtaining a stress strain curve after smoothing by means of regression analysis program. The experiment system is suitable for mechanical property test of rubber in complex stress state. The technical proposal can effectively carry out stress-distortion test on a rubber sample under the conditions of single axis, double axis and pure shearing, thereby estimating the mechanical property of tyre rubber in complex stress state and providing accurate material parameters for tyre numerical analysis.
Description
Technical field
The invention belongs to doughnut performance test technology, particularly testing tire rubber complex stress condition mechanical performance method and this method is the specialized equipment of usefulness.
Background technology
Tire is the unique grounded parts of automobile, and the coupling of tire, road surface and automobile chassis forms the various performances of automobile, and the research tyre performance is the basis of analyzing automotive performance.In rubber structure finite element analyses such as tire, the selection of rubber super-elasticity constitutive model and the accuracy of material parameter play conclusive effect to the result of finite element analysis.Usually contain more than ten kind of filled rubber in the doughnut, because the feature of rubber is very complicated, material and geometric properties all are non-linear.Rubber for temperature, surrounding medium, strain over time, role and influence such as loading rate and dependent variable are very responsive, the manufacturing process of rubber and composition also have remarkable influence to the rubber mechanical property.Therefore, want to characterize accurately the material property of rubber, only rely on the unilateral stretching performance test and can not describe all mechanical behaviors that material comprises compression and shearing fully, and must comprise stretching, compression to elastomeric material, shearing and volume experiment etc. are in interior whole infrastests.Rubber experiment is difficulty relatively, and testing equipment and experimental situation are had higher requirement, in the experiment link after temperature, draw speed, the vulcanization of rubber each parameter such as storage period experimental result is all had bigger influence.Rubber experiment has only the simple extension experiment that national standard (standard GB/T528-1998) is arranged at present.For accurate study mechanics of tire performance more, need to set up more complete filled rubber mechanical property experimental system.
Summary of the invention
One object of the present invention is to propose the perfect tire rubber complex stress condition mechanical performance experimental system of a cover, the material test that comprises uniaxial tensile test, biaxial stretch-formed test, planar stretch (pure shear) test, its purpose is to obtain one group of tire elastomeric material data commonly used by the application of this system, and these group data are applied in the numerical analysis of actual tire.
Second purpose of the present invention provides above-mentioned rubber for tire pure shear test fixture.
The 3rd purpose of the present invention provides the biaxial stretch-formed test fixture of above-mentioned rubber for tire.
In order to realize first above-mentioned purpose, the present invention has adopted following technical scheme:
The method of testing tire rubber complex stress condition mechanical performance, this method comprise uniaxial tensile test, pure shear test, biaxial stretch-formed test and data processing step, wherein:
1. the rectangular tab sample is adopted in pure shear test, is the workspace in the middle of the sample, and the clamping zone has been reserved at two ends respectively, and aluminium flake is all pasted in these both sides, zone, by aluminium flake and anchor clamps clamping; Two in anchor clamps one cover, anchor clamps are located the clamping sample by the seam of bolt and anchor clamps bottom; Load by electronic universal tester; The stress data of test obtains by the data acquisition system (DAS) that links to each other with electronic universal tester, and strain data obtains by the ccd image harvester;
2. the cruciform sample is adopted in biaxial stretch-formed test, and the cruciform sample bonds prior to aluminium flake, and by aluminium flake and anchor clamps clamping, the seam of bolt and anchor clamps bottom guarantees the location and clamps sample; Four in anchor clamps one cover, each clamping situation is identical; Adopt Biaxially stretched testing machine, at both direction test is loaded simultaneously from two passages, test all has displacement in four support arm directions; Gather the stress and strain of two passages simultaneously, averaging obtains the stress-strain data of each sample;
3. data processing, pure shear and biaxial stretch-formed test use non-contact type strain measurement equipment to write down distortion, the ccd image harvester collects and each stress picture of the current location of corresponding sample constantly, the utilization image processing techniques is handled the test photo of each sample, obtains and the corresponding strain value of stress; Promptly according to image and time relationship, tensile force and time relationship obtain the stress-strain diagram data, obtain stress-strain diagram after the fairing with regression analysis program again.
As preferably, above-mentioned uniaxial tensile test, adopt dumbbell specimen, test procedure and requirement are carried out with reference to the regulation of standard GB/T528-1998, use electronic universal tester to stretch, the stress-strain diagram of record sample is got the mean value of same material various sample, is the uniaxial tension stress-strain diagram of this material.As preferred again, when carrying out uniaxial tensile test, should eliminate the Mullins effect and the Payne effect of elastomeric material.
As preferably, clean aluminium flake and rubber adhesion face when above-mentioned pure shear test and biaxial stretch-formed test, guarantee bond strength.
As preferably, the end of four support arms of above-mentioned cruciform sample is respectively equipped with the thickening clamping part, cruciform sample middle part uniform thickness.As preferred again, right-angled intersection place of cruciform sample has rounding.
As preferably, the image processing techniques of above-mentioned step described in 4. comprises the steps:
I, seizure automatically at set intervals obtain a series of distortion ccd images, simultaneously test machine corresponding load writing time;
Need a reference picture when ii, image processing, the ccd image of different time correspondence is a target image, obtains the displacement data file by digital imaging processing software;
Iii, utilize Newton-Rapshon method displacement calculating, should be noted that when selecting image-region, to be chosen in the sample deformation zone;
Iv, the displacement file is loaded in the process software, selects the Cauchy option to calculate the strain file that can obtain the image correspondence, corresponding strain in the file is averaged then obtains the corresponding strain file of image.
Need to change when the big strain as preferred again, above-mentioned reference picture, and actual strain need obtain to such an extent that strain adds the strain of reference picture at last.
In order to realize second above-mentioned purpose, the invention provides above-mentioned rubber for tire pure shear test fixture, these anchor clamps comprise clamp port, clamp port is made of two holding pieces on the chuck body, the bottom of clamp port is provided with seam, and on two corresponding positions of holding piece, be respectively equipped with several screws, and be located in two screws between the holding piece by bolt, realize that clamp port clamps sample.
In order to realize the 3rd above-mentioned purpose, the invention provides the biaxial stretch-formed test fixture of above-mentioned rubber for tire, these anchor clamps comprise clamp port, clamp port is made of two holding pieces on the chuck body, the bottom of clamp port is provided with seam, and on two corresponding positions of holding piece, be respectively equipped with a screw, and be located in two screws between the holding piece by bolt, realize that clamp port clamps sample.
Technical solution of the present invention is applicable to the test of rubber complex stress condition mechanical performance.By this technical scheme, can effectively carry out stress-deformation test to rubber test specimen under single shaft, twin shaft and the pure shear situation, the mechanical property under the tire rubber complex stress condition is made assessment, also provide material parameter accurately for the tire numerical analysis.
Description of drawings
Fig. 1 is a rubber mechanical property testing system structured flowchart.
Fig. 2 is the uniaxial tension stress-strain diagram.
Fig. 3 is the structural representation of pure shear test sample.
Fig. 4 is the structural representation of pure shear test fixture.
Fig. 5 is the right view of Fig. 4.
Fig. 6 is the upward view of Fig. 4.
Fig. 7 is the structural representation of biaxial stretch-formed test test sample.
Fig. 8 is the structural representation of biaxial stretch-formed test fixture.
Fig. 9 is the upward view of Fig. 8.
Figure 10 is the flow chart of data processing block diagram.
Figure 11 catches the distortion ccd image that obtains at set intervals automatically.
Figure 12 is for utilizing Newton-Rapshon method displacement calculating, the sample deformation zone C CD image of selection.
Figure 13 is for being example with Tread rubber, the image that CCD is captured.
Figure 14 is a Tread rubber pure shear stress-strain diagram.
Figure 15 is the biaxial stretch-formed stress-strain diagram of Tread rubber.
Embodiment
With reference to Fig. 1, design anchor clamps, vulcanization plant, test specimen and servicing unit, test specimen is ready, pass through vulcanizing equipment, the mechanical test machine carries out uniaxial tensile test, biaxial stretch-formed test and pure shear test, utilize numeric data collecting device and graph data collecting device to obtain data and the image of wanting, the data of gathering are handled, obtain final result through independently developed data analysis software, image processing software, regretional analysis software, finite element software etc.
One directional tensile test adopts dumbbell specimen, test procedure and require to carry out with reference to the regulation of standard GB/T528-1998, and practical electronic universal tester stretches, and extend justice, vernier caliper, Steel Ruler etc. of large deformation are measured strain.Every kind of material carries out the contrast test of a plurality of samples, and carries out continuously under same test condition.Note eliminating the Mullins effect and the Payne effect of elastomeric material.The stress-strain diagram of record sample is got the mean value of same material various sample, is the uniaxial tension stress-strain diagram of this material.
The rubber tension test is carried out on universal testing machine.In process of the test, the stress strain curve (as shown in Figure 2) with drawing sample on the display screen of the online microcomputer of electronic universal tester in real time is also referred to as F-Δ l curve.
In this test, getting maximum strain is 6, the relational expression below promptly satisfying between distortion back size L and the life size l:
L＝6l (1-1)
Can obtain σ-ε curve (stress-strain curve) according to F-Δ l curve, σ, ε can be calculated by following formula:
Wherein, F is the suffered acting force of sample, the N of unit; B is a sample working portion width, the mm of unit; D is the thickness of sample working portion, the mm of unit.
As shown in Figure 3, adopting rectangular tab sample 1 in the pure shear test, is the workspace in the middle of the sample 1, and the clamping zone has been reserved at two ends respectively, and aluminium flake is all pasted in these both sides, zone, by aluminium flake and anchor clamps 2 clampings.As Fig. 4,5 and shown in Figure 6, anchor clamps 2 comprise clamp port 3, clamp port 3 is made of two holding pieces on the chuck body, the bottom of clamp port 3 is provided with seam 5, and on two corresponding positions of holding piece, be respectively equipped with 7 screws 4, be located in two screws 4 between the holding piece by 7 bolts, anchor clamps are located clamping sample 1 by the bolt of 7 M8 and the seam 5 of anchor clamps bottom.Load by electronic universal tester, test procedure is identical substantially with uniaxial tensile test with requirement.Note cleaning aluminium flake and rubber adhesion face, guarantee bond strength.The stress data of test obtains by the data acquisition system (DAS) that links to each other with electronic universal tester, and strain data obtains by the ccd image harvester.
As shown in figure 10, experimental data processing, pure shear and biaxial stretch-formed test can't use big strain extensometer to measure strain value, use non-contact type strain measurement equipment to write down distortion.The ccd image harvester collects and each stress picture of the current location of corresponding sample constantly, and the utilization image processing techniques is handled the test photo of each sample, obtains and the corresponding strain value of stress.Promptly according to image and time relationship, tensile force and time relationship obtain the stress-strain diagram data, obtain stress-strain diagram after the fairing with regression analysis program again.
The idiographic flow of Flame Image Process is as follows:
As shown in figure 11, catch automatically at set intervals, obtain a series of distortion ccd images, simultaneously test machine corresponding load writing time.Need a reference picture during image processing, the ccd image of different time correspondence is a target image, obtains the displacement data file by digital imaging processing software.Because this software needs the degree of correlation of reference picture and target image to have relatively high expectations, so reference picture needs replacing when big strain, and actual strain need obtain to such an extent that strain adds the strain of reference picture at last.
As shown in figure 12, utilize Newton-Rapshon method displacement calculating, should be noted that when selecting image-region, to be chosen in the sample deformation zone.Then the displacement file is loaded in the process software, selects the Cauchy option to calculate the strain file that can obtain the image correspondence, corresponding strain in the file is averaged then obtains the corresponding strain file of image.
The pure shear data processing:
After obtaining the pure shear strain data,, obtain the stress-strain diagram of material at last according to corresponding time relationship with the similar stress data that obtains of uniaxial tension.With Tread rubber is example, and Figure 13 has showed the image that CCD is captured.
Catching mode/filename/storage time/the storage date
Manually individual catches 11 (771) .bmp 2006-12-20 15:44:56
Automatically catch 11 (772) .bmp 2006-12-20 15:45:0600+++
Automatically catch 11 (773) .bmp 2006-12-20 15:45:0700
Automatically catch 11 (774) .bmp 2006-12-20 15:45:0800+++
Automatically catch 11 (775) .bmp 2006-12-20 15:45:0900
Automatically catch 11 (776) .bmp 2006-12-20 15:45:1000+++
Automatically catch 11 (777) .bmp 2006-12-20 15:45:1200
Automatically catch 11 (778) .bmp 2006-12-20 15:45:1200+++
Automatically catch 11 (779) .bmp 2006-12-20 15:45:1300
Automatically catch 11 (780) .bmp 2006-12-20 15:45:1400+++
Automatically catch 11 (781) .bmp 2006-12-20 15:45:1600
Automatically catch 11 (782) .bmp 2006-12-20 15:45:1700+++
Automatically catch 11 (783) .bmp 2006-12-20 15:45:1800
Automatically catch 11 (784) .bmp 2006-12-20 15:45:1900---(782)
Automatically catch 11 (785) .bmp 2006-12-20 15:45:2000
Automatically catch 11 (786) .bmp 2006-12-20 15:45:2100---
Automatically catch 11 (787) .bmp 2006-12-20 15:45:2200
Automatically catch 11 (788) .bmp 2006-12-20 15:45:2300---
Automatically catch 11 (789) .bmp 2006-12-20 15:45:2400
Automatically catch 11 (790) .bmp 2006-12-20 15:45:2500---
Automatically catch 11 (791) .bmp 2006-12-20 15:45:2600
Automatically catch 11 (792) .bmp 2006-12-20 15:45:2700---
Automatically catch 11 (793) .bmp 2006-12-20 15:45:2800
Automatically catch 11 (794) .bmp 2006-12-20 15:45:2900---
Automatically catch 11 (795) .bmp 2006-12-20 15:45:3000
Automatically catch 11 (796) .bmp 2006-12-20 15:45:3100+++ (794)
Automatically catch 11 (797) .bmp 2006-12-20 15:45:3200
Automatically catch 11 (798) .bmp 2006-12-20 15:45:3300+++
Automatically catch 11 (799) .bmp 2006-12-20 15:45:3400
Automatically catch 11 (800) .bmp 2006-12-20 15:45:3500+++
Automatically catch 11 (801) .bmp 2006-12-20 15:45:3600
Automatically catch 11 (802) .bmp 2006-12-20 15:45:3700+++
Automatically catch 11 (803) .bmp 2006-12-20 15:45:3800
Automatically catch 11 (804) .bmp 2006-12-20 15:45:3900+++
Automatically catch 11 (805) .bmp 2006-12-20 15:45:4000
Automatically catch 11 (806) .bmp 2006-12-20 15:45:4100+++
Automatically catch 11 (807) .bmp 2006-12-20 15:45:4200
Automatically catch 11 (808) .bmp 2006-12-20 15:45:4300---(806)
Automatically catch 11 (809) .bmp 2006-12-20 15:45:4400
Automatically catch 11 (810) .bmp 2006-12-20 15:45:4500---
Automatically catch 11 (811) .bmp 2006-12-20 15:45:4600
Automatically catch 11 (812) .bmp 2006-12-20 15:45:4700---
Automatically catch 11 (813) .bmp 2006-12-20 15:45:4800
Automatically catch 11 (814) .bmp 2006-12-20 15:45:4900---
Automatically catch 11 (815) .bmp 2006-12-20 15:45:5000
Automatically catch 11 (816) .bmp 2006-12-20 15:45:5100---
Automatically catch 11 (817) .bmp 2006-12-20 15:45:5200
Automatically catch 11 (818) .bmp 2006-12-20 15:45:5300---
Automatically catch 11 (819) .bmp 2006-12-20 15:45:5400
Automatically catch 11 (820) .bmp 2006-12-20 15:45:5500---
Be example with 774 below, provided the displacement and the strain data file that calculate
11(774)NR.dat
220，480，-2.114391E-02，-.1352111
220，485，-1.802445E-02，-.1354154
220，490，-1.669118E-02，-.1299151
220，495，-1.445478E-02，-.1263
220，500，-1.893696E-02，-.1242772
220，505，-2.098877E-02，-.1204498
220，510，-1.914942E-02，-.1117311
220，515，-1.815837E-02，-.1101902
220，520，-1.869369E-02，-.1105239
220，525，-2.179097E-02，-.1062431
220，530，-2.342065E-02，-.1049947
220，535，-2.610512E-02，-.1020902
220，540，-2.431162E-02，-9.749981E-02
220，545，-2.699915E-02，-9.513314E-02
220，550，-.0288553，-9.424289E-02
225，480，-2.035839E-02，-.139068
225，485，-1.769613E-02，-.1361432
225，490，-1.799963E-02，-.1305461
225，495，-1.616591E-02，-.1264303
225，500，-2.040392E-02，-.1244578
225，505，-2.148009E-02，-.1217723
225，510，-1.912766E-02，-.1140874
225，515，-1.970614E-02，-.1107264
225，520，-1.967676E-02，-.1094659
225，525，-2.161995E-02，-.105935
225，530，-2.115033E-02，-.1049102
225，535，-2.261283E-02，-.101652
225，540，-2.065959E-02，-9.730339E-02
225，545，-2.246297E-02，-9.308197E-02
225，550，-2.379349E-02，-9.238213E-02
230，480，-1.947473E-02，-.1384695
230，485，-1.828201E-02，-.1357599
230，490，-1.801163E-02，-.1299738
230，495，-1.803668E-02，-.1256237
230，500，-1.979122E-02，-.1224661
230，505，-2.039025E-02，-.1193891
230，510，-.017796，-.1125582
230，515，-2.093086E-02，-.1116798
230，520，-2.014527E-02，-.1095875
230，525，-.0214919，-.1052592
230，530，-2.293483E-02，-.1051698
230，535，-2.312696E-02，-.1029623
230，540，-2.079567E-02，-9.849168E-02
230，545，-2.383563E-02，-.0946537
230，550，-2.327985E-02，-.0914127
235，480，-1.944863E-02，-.1411598
235，485，-1.917357E-02，-.1368977
235，490，-1.850016E-02，-.1311992
235，495，-.0184128，-.1264044
235，500，-2.060636E-02，-.123064
235，505，-2.089739E-02，-.1196645
235，510，-1.950892E-02，-.1141643
235，515，-2.069723E-02，-.1102834
235，520，-2.024403E-02，-.1077909
235，525，-2.093268E-02，-.1062198
235，530，-2.273269E-02，-.105243
235，535，-2.214028E-02，-.1027951
235，540，-1.935024E-02，-.0971811
235，545，-2.265209E-02，-9.364469E-02
235，550，-2.276526E-02，-9.149782E-02
240，480，-1.908372E-02，-.1408591
240，485，-2.003442E-02，-.1375462
240，490，-2.000243E-02，-.1329865
240，495，-2.061469E-02，-.1289391
240，500，-2.189239E-02，-.1252962
240，505，-2.215153E-02，-.1218338
240，510，-2.130321E-02，-.117381
240，515，-2.177442E-02，-.1139339
240，520，-1.830283E-02，-.1103163
240，525，-.0177932，-.1083865
240，530，-1.873045E-02，-.1067708
240，535，-1.816259E-02，-.1041942
240，540，-1.602377E-02，-9.831519E-02
240，545，-1.929671E-02，-9.521508E-02
240，550，-1.936079E-02，-9.227126E-02
245，480，-1.861317E-02，-.1428707
245，485，-2.179508E-02，-.1394555
245，490，-2.201032E-02，-.134305
245，495，-2.234535E-02，-.1298542
245，500，-2.287227E-02，-.1250138
245，505，-2.250039E-02，-.12204
245，510，-2.178022E-02，-.1180535
245，515，-.0229577，-.1133237
245，520，-2.144672E-02，-.1095627
245，525，-2.079435E-02，-.108356
245，530，-.0211314，-.1054243
245，535，-2.080871E-02，-.1026492
245，540，-1.633805E-02，-9.735318E-02
245，545，-2.022111E-02，-9.348723E-02
245，550，-2.127339E-02，-9.202949E-02
250，480，-1.657347E-02，-.1438227
250，485，-.0195365，-.1410982
250，490，-2.087537E-02，-.1348932
250，495，-2.209111E-02，-.12973
250，500，-.0230962，-.1252082
250，505，-2.114897E-02，-.1217017
250，510，-.0220788，-.1195736
250，515，-2.390657E-02，-.1140201
250，520，-.0225761，-.1122055
250，525，-2.179933E-02，-.1101253
250，530，-2.139562E-02，-.1073827
250，535，-2.158531E-02，-.105415
250，540，-1.643478E-02，-.1003619
250，545，-1.958749E-02，-9.583358E-02
250，550，-1.939754E-02，-9.208556E-02
255，480，-1.826949E-02，-.1468334
255，485，-2.026305E-02，-.1427665
255，490，-2.202362E-02，-.1354721
255，495，-2.436031E-02，-.1308205
255，500，-2.718809E-02，-.1259352
255，505，-.0241417，-.1223821
255，510，-2.479683E-02，-.1205288
255，515，-2.528302E-02，-.1148855
255，520，-2.331241E-02，-.1127282
255，525，-.0224067，-.1051632
255，530，-2.020752E-02，-.1019435
255，535，-.0210297，-9.833794E-02
255，540，-1.659676E-02，-9.372368E-02
255，545，-1.935048E-02，-8.980083E-02
255，550，-.0189382，-8.617552E-02
260，480，-1.541933E-02，-.1438606
260，485，-1.530347E-02，-.1407226
260，490，-1.725601E-02，-.13411
260，495，-1.868737E-02，-.1286513
260，500，-2.173151E-02，-.1240713
260，505，-1.941398E-02，-.1202051
260，510，-2.066166E-02，-.1184814
260，515，-2.153365E-02，-.1137388
260，520，-2.015753E-02，-.1131825
260，525，-2.232618E-02，-.1001146
260，530，-2.166636E-02，-9.866629E-02
260，535，-2.388516E-02，-9.667017E-02
260，540，-2.132281E-02，-9.255679E-02
260，545，-2.202773E-02，-.0882856
260，550，-2.140601E-02，-8.421834E-02
265，480，-1.588554E-02，-.1432382
265，485，-1.542979E-02，-.1406821
265，490，-1.802588E-02，-.1338227
265，495，-1.995542E-02，-.1280845
265，500，-2.308534E-02，-.1232635
265，505，-2.197173E-02，-.1201796
265，510，-2.248856E-02，-.1182638
265，515，-2.417838E-02，-.1123727
265，520，-2.306142E-02，-.1105136
265，525，-.0249269，-.1019848
265，530，-2.382378E-02，-.1002038
265，535，-2.542909E-02，-9.902424E-02
265，540，-2.312841E-02，-9.411631E-02
265，545，-2.405846E-02，-.0873619
265，550，-2.415022E-02，-8.451534E-02
270，480，-1.448431E-02，-.1428626
270，485，-1.382559E-02，-.1416676
270，490，-1.777676E-02，-.1340871
270，495，-1.993463E-02，-.129056
270，500，-2.144882E-02，-.1240827
270，505，-2.010117E-02，-.1177589
270，510，-2.015883E-02，-.1144824
270，515，-2.140968E-02，-.1081349
270，520，-2.051012E-02，-.105942
270，525，-2.632992E-02，-9.811358E-02
270，530，-2.079661E-02，-9.574076E-02
270，535，-2.415511E-02，-.0936166
270，540，-2.311926E-02，-8.826933E-02
270，545，-2.618859E-02，-8.214676E-02
270，550，-2.692719E-02，-8.052322E-02
275，480，-1.367742E-02，-.1408454
275，485，-1.381182E-02，-.1405134
275，490，-1.875987E-02，-.1322542
275，495，-.0199933，-.1263959
275，500，-2.253413E-02，-.120586
275，505，-2.059514E-02，-.1158697
275，510，-2.076437E-02，-.1111838
275，515，-2.255725E-02，-.1054588
275，520，-2.139402E-02，-.1069942
275，525，-2.733914E-02，-.0958029
275，530，-2.243913E-02，-9.385468E-02
275，535，-2.504036E-02，-9.083918E-02
275，540，-2.348937E-02，-8.752698E-02
275，545，-2.654161E-02，-8.061812E-02
275，550，-2.642153E-02，-7.566682E-02
280，480，-1.403325E-02，-.140677
280，485，-1.251853E-02，-.1406998
280，490，-1.710421E-02，-.1319062
280，495，-1.998148E-02，-.1258418
280，500，-2.315598E-02,-.1200018
280，505，-2.087472E-02，-.1154446
280，510，-2.058925E-02，-.1107075
280，515，-2.364032E-02，-.1053695
280，520，-2.315167E-02，-.106644
280，525，-2.905809E-02，-9.475356E-02
280，530，-2.525414E-02，-9.395564E-02
280，535，-2.653738E-02，-8.979063E-02
280，540，-2.565888E-02，-.0859963
280，545，-2.793503E-02，-7.939299E-02
280，550，-2.553852E-02，-7.424264E-02
285，480，-1.777176E-02，-.1394168
285，485，-1.568908E-02，-.139063
285，490，-1.917678E-02，-.1312885
285，495，-2.175027E-02，-.1265695
285，500，-2.358543E-02，-.1215217
285，505，-2.141777E-02，-.1174704
285，510，-2.037496E-02，-.1141524
285，515，-.0222722，-.1094494
285，520，-2.176987E-02，-.1059457
285，525，-2.880009E-02，-9.499151E-02
285，530，-2.486004E-02，-9.449118E-02
285，535，-2.583565E-02，-8.963308E-02
285，540，-2.604504E-02，-8.546457E-02
285，545，-2.862153E-02，-7.948557E-02
285，550，-2.633344E-02，-7.708284E-02
290，480，-1.973368E-02，-.1409752
290，485，-1.713704E-02，-.140029
290，490，-2.013423E-02，-.1329757
290，495，-2.040895E-02，-.1283365
290，500，-.0233006，-.122284
290，505，-2.148039E-02，-.119106
290，510，-2.029202E-02，-.1159489
290，515，-2.227012E-02，-.1109485
290，520，-2.265525E-02，-.106169
290，525，-2.934063E-02，-9.753891E-02
290，530，-.0270244，-9.596178E-02
290，535，-2.693177E-02，-9.032217E-02
290，540，-2.708967E-02，-8.587512E-02
290，545，-.0296147，-8.117637E-02
290，550，-2.758221E-02，-7.972796E-02
It below is the strain data file that calculates according to displacement
11(774)NRSG11Strain.dat
245，505，-2.687837E-05，7.913322E-04，-1.045761E-04
245，510，-3.898006E-05，7.536997E-04，-7.094901E-05
245，515，-4.521364E-05，7.165516E-04，-4.639895E-06
245，520，-4.180986E-05，7.059689E-04，3.29934E-05
245，525，-2.869692E-05，6.94111E-04，6.825072E-05
250，505，-1.229021E-05，8.194548E-04，-6.168569E-05
250，510，-3.039122E-05，7.813193E-04，-1.773741E-05
250，515，-4.776428E-05，7.403526E-04，5.975258E-05
250，520，-5.481489E-05，7.299506E-04，1.017307E-04
250，525，-5.549634E-05，7.210682E-04，1.396432E-04
255，505，-4.091864E-06，8.437153E-04，-3.565717E-05
255，510，-2.539278E-05，8.075819E-04，1.581154E-05
255，515，-5.29105E-05，7.630093E-04，1.013674E-04
255，520，-6.755664E-05，7.515177E-04，1.483448E-04
255，525，-7.591327E-05，7.446691E-04，1.902616E-04
260，505，-2.167761E-06，8.653839E-04，-5.033156E-06
260，510，-2.269102E-05，8.357606E-04，4.637185E-05
260，515，-5.592406E-05，7.927524E-04，1.321905E-04
260，520，-7.731716E-05，7.838673E-04，1.771649E-04
260，525，-9.052164E-05，7.765736E-04，2.168411E-04
265，505，-5.958858E-06，8.823916E-04，1.410536E-06
265，510，-2.330709E-05，8.613063E-04，5.065481E-05
265，515，-5.830817E-05，8.205519E-04，1.347334E-04
265，520，-8.422102E-05，8.138386E-04，1.75668E-04
265，525，-1.036397E-04，8.056308E-04，2.118097E-04
As shown in figure 14, the Tread rubber pure shear stress-strain diagram that obtains for stress-strain curve and quadratic polynomial match.
As shown in figure 15, biaxial stretch-formed stress-strain data has x, y both direction respectively, because therefore the material isotropy averages x, y direction ess-strain respectively, obtains the material stress strain curve.
Claims (10)
1. the method for testing tire rubber complex stress condition mechanical performance is characterized in that this method comprises uniaxial tensile test, pure shear test, biaxial stretch-formed test and data processing step, wherein:
1. rectangular tab sample (1) is adopted in pure shear test, is the workspace in the middle of the sample (1), and the clamping zone has been reserved at two ends respectively, and aluminium flake is all pasted in these both sides, zone, by aluminium flake and anchor clamps (2) clamping; Two in anchor clamps (2) one covers, anchor clamps (2) are located by the seam (5) of bolt and anchor clamps (2) bottom and are clamped sample (1); Load by electronic universal tester; The stress data of test obtains by the data acquisition system (DAS) that links to each other with electronic universal tester, and strain data obtains by the ccd image harvester;
2. cruciform sample (6) is adopted in biaxial stretch-formed test, and cruciform sample (6) is prior to the aluminium flake bonding, and by aluminium flake and anchor clamps (9) clamping, the seam (10) of bolt and anchor clamps bottom guarantees the location and clamps sample (6); Four in anchor clamps (9) one covers, each clamping situation is identical; Adopt Biaxially stretched testing machine, at both direction test is loaded simultaneously from two passages, test all has displacement in four support arm directions; Gather the stress and strain of two passages simultaneously, averaging obtains the stress-strain data of each sample;
3. data processing, pure shear and biaxial stretch-formed test use non-contact type strain measurement equipment to write down distortion, the ccd image harvester collects and each stress picture of the current location of corresponding sample constantly, the utilization image processing techniques is handled the test photo of each sample, obtains and the corresponding strain value of stress; Promptly according to image and time relationship, tensile force and time relationship obtain the stress-strain diagram data, obtain stress-strain diagram after the fairing with regression analysis program again.
2. the method for testing tire rubber complex stress condition mechanical performance according to claim 1, it is characterized in that: uniaxial tensile test, adopt dumbbell specimen, test procedure and requirement are carried out with reference to the regulation of standard GB/T528-1998, use electronic universal tester to stretch, the stress-strain diagram of record sample is got the mean value of same material various sample, is the uniaxial tension stress-strain diagram of this material.
3. the method for testing tire rubber complex stress condition mechanical performance according to claim 2 is characterized in that: when carrying out uniaxial tensile test, should eliminate the Mullins effect and the Payne effect of elastomeric material.
4. the method for testing tire rubber complex stress condition mechanical performance according to claim 1 is characterized in that: clean aluminium flake and rubber adhesion face when pure shear test and biaxial stretch-formed test, guarantee bond strength.
5. the method for testing tire rubber complex stress condition mechanical performance according to claim 1 is characterized in that: the end of four support arms of cruciform sample (6) is respectively equipped with thickening clamping part (7), cruciform sample (6) middle part uniform thickness.
6. the method for testing tire rubber complex stress condition mechanical performance according to claim 1 or 5, it is characterized in that: cruciform sample (6) right-angled intersection place has rounding (8).
7. the method for testing tire rubber complex stress condition mechanical performance according to claim 1 is characterized in that the image processing techniques described in step 4. comprises the steps:
I, every an intersegmental automatic seizure, obtain a series of distortion ccd images, simultaneously test machine corresponding load writing time;
Need a reference picture when ii, image processing, the ccd image of different time correspondence is a target image, obtains the displacement data file by digital imaging processing software;
Iii, utilize Newton-Rapshon method displacement calculating, should be noted that when selecting image-region, to be chosen in the sample deformation zone;
Iv, the displacement file is loaded in the process software, selects the Cauchy option to calculate the strain file that can obtain the image correspondence, corresponding strain in the file is averaged then obtains the corresponding strain file of image.
8. the method for testing tire rubber complex stress condition mechanical performance according to claim 7 is characterized in that: reference picture needs to change when big strain, and actual strain need obtain to such an extent that strain adds the strain of reference picture at last.
9. rubber for tire pure shear test fixture, it is characterized in that: these anchor clamps comprise clamp port (3), clamp port (3) is made of two holding pieces on the chuck body, the bottom of clamp port (3) is provided with seam (5), and on two corresponding positions of holding piece, be respectively equipped with several screws (4), be located in two screws (4) between the holding piece by bolt, realize that clamp port (3) clamps sample.
10. the biaxial stretch-formed test fixture of rubber for tire, it is characterized in that: these anchor clamps comprise clamp port (12), clamp port (12) is made of two holding pieces on the chuck body, the bottom of clamp port (12) is provided with seam (10), and on two corresponding positions of holding piece, be respectively equipped with a screw (11), be located in two screws (11) between the holding piece by bolt, realize that clamp port (12) clamps sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101626680A CN101477111B (en) | 2008-12-08 | 2008-12-08 | Method for testing tire rubber complex stress condition mechanical performance and its special equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101626680A CN101477111B (en) | 2008-12-08 | 2008-12-08 | Method for testing tire rubber complex stress condition mechanical performance and its special equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101477111A true CN101477111A (en) | 2009-07-08 |
| CN101477111B CN101477111B (en) | 2011-09-07 |
Family
ID=40837856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101626680A Active CN101477111B (en) | 2008-12-08 | 2008-12-08 | Method for testing tire rubber complex stress condition mechanical performance and its special equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101477111B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832895A (en) * | 2010-03-26 | 2010-09-15 | 北京纳克分析仪器有限公司 | Visual tensile testing system |
| CN102445413A (en) * | 2011-10-11 | 2012-05-09 | 青岛科技大学 | Dynamic measuring method for bonding performance of rubber steel wires |
| CN102567566A (en) * | 2010-12-08 | 2012-07-11 | 韩国轮胎株式会社 | Improved tire performance evaluation method and system |
| CN102768149A (en) * | 2012-07-17 | 2012-11-07 | 清华大学 | Clamp, device with clamp for testing mechanical property of hyper-elastic material and method |
| CN103154702A (en) * | 2010-10-05 | 2013-06-12 | 株式会社普利司通 | Method for predicting elastic response performance of rubber product, method for design, and device for predicting elastic response performance |
| CN104374694A (en) * | 2014-11-20 | 2015-02-25 | 三角轮胎股份有限公司 | Method for testing adhesive force of two sizing materials |
| CN103940668B (en) * | 2014-03-31 | 2017-01-11 | 奇瑞汽车股份有限公司 | Plane stretching experiment method and device |
| CN107515151A (en) * | 2017-09-27 | 2017-12-26 | 山东玲珑轮胎股份有限公司 | Rubber double-shaft dynamic performance testing device, method and system |
| CN109238837A (en) * | 2018-07-27 | 2019-01-18 | 中国科学院金属研究所 | A kind of shearing clamp and material cutting performance and deflection measuring method using it |
| CN109900563A (en) * | 2019-01-28 | 2019-06-18 | 绍兴文理学院 | Oversize anchor structure face shearing test method |
| CN112098192A (en) * | 2020-10-21 | 2020-12-18 | 中国建材检验认证集团股份有限公司 | Clamp and method for testing tensile shear creep of adhesive by cross method |
| CN113484507A (en) * | 2021-06-29 | 2021-10-08 | 长春工业大学 | Device and method for testing strain distribution and dynamic slip rate of rolling tire tread |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2864662Y (en) * | 2005-08-05 | 2007-01-31 | 常东华 | Wire rod clamping apparatus for material testing machine |
| CN2852103Y (en) * | 2005-10-21 | 2006-12-27 | 上海同磊土木工程技术有限公司 | Film material stretching tester |
| CN100507503C (en) * | 2006-07-14 | 2009-07-01 | 清华大学 | Single-axle double-direction symmetric stretching experimental machine |
| CN101315317B (en) * | 2007-06-01 | 2010-11-03 | 北京有色金属研究总院 | Test method of material mesoscopic mechanics |
-
2008
- 2008-12-08 CN CN2008101626680A patent/CN101477111B/en active Active
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832895A (en) * | 2010-03-26 | 2010-09-15 | 北京纳克分析仪器有限公司 | Visual tensile testing system |
| CN103154702B (en) * | 2010-10-05 | 2015-03-04 | 株式会社普利司通 | Method for predicting elastic response performance of rubber product, method for design, and device for predicting elastic response performance |
| CN103154702A (en) * | 2010-10-05 | 2013-06-12 | 株式会社普利司通 | Method for predicting elastic response performance of rubber product, method for design, and device for predicting elastic response performance |
| CN102567566A (en) * | 2010-12-08 | 2012-07-11 | 韩国轮胎株式会社 | Improved tire performance evaluation method and system |
| CN102445413A (en) * | 2011-10-11 | 2012-05-09 | 青岛科技大学 | Dynamic measuring method for bonding performance of rubber steel wires |
| CN102445413B (en) * | 2011-10-11 | 2013-10-16 | 青岛科技大学 | Dynamic measuring method for bonding performance of rubber steel wires |
| CN102768149A (en) * | 2012-07-17 | 2012-11-07 | 清华大学 | Clamp, device with clamp for testing mechanical property of hyper-elastic material and method |
| CN103940668B (en) * | 2014-03-31 | 2017-01-11 | 奇瑞汽车股份有限公司 | Plane stretching experiment method and device |
| CN104374694A (en) * | 2014-11-20 | 2015-02-25 | 三角轮胎股份有限公司 | Method for testing adhesive force of two sizing materials |
| CN107515151A (en) * | 2017-09-27 | 2017-12-26 | 山东玲珑轮胎股份有限公司 | Rubber double-shaft dynamic performance testing device, method and system |
| CN107515151B (en) * | 2017-09-27 | 2023-09-29 | 山东玲珑轮胎股份有限公司 | Rubber double-shaft dynamic performance testing device, method and system |
| CN109238837A (en) * | 2018-07-27 | 2019-01-18 | 中国科学院金属研究所 | A kind of shearing clamp and material cutting performance and deflection measuring method using it |
| CN109238837B (en) * | 2018-07-27 | 2023-11-21 | 中国科学院金属研究所 | Shearing clamp and material shearing performance and deformation amount measuring method using same |
| CN109900563A (en) * | 2019-01-28 | 2019-06-18 | 绍兴文理学院 | Oversize anchor structure face shearing test method |
| CN112098192A (en) * | 2020-10-21 | 2020-12-18 | 中国建材检验认证集团股份有限公司 | Clamp and method for testing tensile shear creep of adhesive by cross method |
| CN113484507A (en) * | 2021-06-29 | 2021-10-08 | 长春工业大学 | Device and method for testing strain distribution and dynamic slip rate of rolling tire tread |
| CN113484507B (en) * | 2021-06-29 | 2022-11-29 | 长春工业大学 | Device and method for testing strain distribution and dynamic slip rate of tread of rolling tire |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101477111B (en) | 2011-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101477111B (en) | Method for testing tire rubber complex stress condition mechanical performance and its special equipment | |
| US7963158B2 (en) | Tire driving stiffness measuring apparatus, tire driving stiffness measuring method and predictive fuel consumption | |
| Xia et al. | Verification of a multiple-machine program for material testing from quasi-static to high strain-rate | |
| CN107576440B (en) | A kind of measurement method that residual stress influences tangential double bolt fastening structure relaxations | |
| CN111537126B (en) | Tool for determining pretightening force of soft package battery, method for determining pretightening force of soft package battery and method for assembling module | |
| CN113933074A (en) | Suspension assembly road simulation test method based on standardized load spectrum | |
| CN113378425B (en) | Automobile heat exchanger product fatigue life testing method based on rain flow counting method | |
| Johlitz et al. | Chemical ageing of elastomers: experiments and modelling | |
| CN107490514A (en) | Stretching and bending preload the frame compliance analysis method of lower impression test device | |
| CN115683409A (en) | Ultrasonic measurement method and system for residual clamping force of bolt plastic area | |
| CN109341919A (en) | The pressure Distribution Test system and method for fuel cell | |
| CN112733399B (en) | Failure evaluation method and device for bolt in random vibration | |
| Narayanan et al. | Evaluation of simple shear test geometries for constitutive characterization using virtual experiments | |
| CN209182473U (en) | The pressure Distribution Test system of fuel cell | |
| CN109187180B (en) | Material Poisson ratio measuring method based on biaxial tensile test | |
| CN112763318B (en) | Metal material residual stress simulation test device and method | |
| Barrès et al. | Recent developments in shear rheometry of uncured rubber compounds: I. Design, construction and validation of a sliding cylinder rheometer | |
| CN114894138B (en) | Method, system, equipment and storage medium for detecting vertical displacement difference of automobile wheel | |
| CN220105239U (en) | Battery detection device | |
| Corvec et al. | Thermomechanical characterization of leathers under tension using infrared thermography | |
| CN109668705B (en) | Large-caliber V-shaped clamp flat plate vibration experiment device and method | |
| Pulicherla et al. | Experimental and numerical study of orthotropic materials | |
| SU1037150A1 (en) | Method of measuring strength of adhesion of dispersed filler with bonding one | |
| Anopuo et al. | Elevated temperature and varied load response of AS41 at bolted joint | |
| CN117110035A (en) | Stress field and temperature field environment simulation device and loading method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hangzhou Chaoyang Tyre Rubber Co., Ltd. Assignor: Hanzhou Zhongce Rubber Co., Ltd. Contract record no.: 2011330001481 Denomination of invention: Method for testing tire rubber complex stress condition mechanical performance and its special equipment Granted publication date: 20110907 License type: Exclusive License Open date: 20090708 Record date: 20111227 |
|
| C56 | Change in the name or address of the patentee |
Owner name: ZHONGCE RUBBER GROUP CO., LTD. Free format text: FORMER NAME: HANZHOU ZHONGCE RUBBER CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 310018, No. 10, No. 2, Hangzhou Economic Development Zone, Zhejiang Patentee after: ZHONGCE RUBBER GROUP CO., LTD. Address before: 310008 No. 1, tidal Road, Hangzhou, Zhejiang Patentee before: Hanzhou Zhongce Rubber Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 310018 No. 1, No. 1 Street, Qiantang District, Hangzhou, Zhejiang Patentee after: Zhongce Rubber Group Co.,Ltd. Address before: 310018 No. 2, 10th Street, Hangzhou Economic Development Zone, Zhejiang Province Patentee before: ZHONGCE RUBBER GROUP Co.,Ltd. |