CN106568661B - A kind of rubber material typical case carries ε~N curve of fatigue under operating condition and tests acquisition methods - Google Patents
A kind of rubber material typical case carries ε~N curve of fatigue under operating condition and tests acquisition methods Download PDFInfo
- Publication number
- CN106568661B CN106568661B CN201610976473.4A CN201610976473A CN106568661B CN 106568661 B CN106568661 B CN 106568661B CN 201610976473 A CN201610976473 A CN 201610976473A CN 106568661 B CN106568661 B CN 106568661B
- Authority
- CN
- China
- Prior art keywords
- fatigue
- strain
- test
- rubber
- rubber material
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
ε~N curve of fatigue under operating condition, which is carried, the invention discloses a kind of rubber material typical case tests acquisition methods, step comprises determining that three basic strain ratios, strain the test than carrying out three test data points substantially for each, test sample is modeled, the relation curve between the load and principal strain of simulation calculation rubber experiment sample；Determine the fatigue load spectral condition for carrying out fatigue test；There is relation data when fatigue failure between times of fatigue and repeated strain in rubber experiment sample when recording fatigue test, brings fatigue equation into and is fitted the damage parameters for solving and obtaining rubber material under three basic strain ratios；According to damage parameters, fatigue data is calculated using fatigue equation and generates the ε~N curve of fatigue of three basic strains than under.The present invention has the advantages that required test supports less, has a wide range of application.
Description
Technical field
The present invention relates to the testing of materials of rubber absorber and analytical technologies, and in particular to a kind of rubber material typical case holds
ε~N the curve of fatigue carried under operating condition tests acquisition methods.
Background technique
Rubber material is widely used in rail traffic, vapour due to its good elastic behavior and excellent fatigue behaviour
Vehicle transport and engineering machinery etc. subtract vibration isolation field, achieve good application effect.During rubber element practical military service,
Small part rubber element is forced in advance more before reaching projected life far away due to there is serious Fatigue Damage Problem
It changes, also has many rubber elements after reaching and being on active service the period, discovery product is still intact when replacement, or even can also make for a long time
With therefore, the case where significantly deviation occur in both and projected life, cause the different degrees of wasting of resources and property
The case where loss, especially the service life of rubber element reaches far away projected life, even more face the wind for safety accident occur
Danger.
Design research and development rubber absorber, can generally be related to two technology corners, i.e. rigidity and fatigue, thus, essence
Hold quasi-ly rubber element fatigue life be exploitation rubber compounding, design research and development the whether successful key technology of rubber element it
One, and the fatigue life of success prediction rubber element then needs to rely on ε~N curve of fatigue data of rubber material as its branch
Support, and the fatigue life of rubber material, it is not only related to its repeated strain width, but also influenced by its mean strain, therefore,
No matter in theoretical research, or in engineer application, test, design and drafting rubber material typical case strain are than (carrying follows
The ratio of its minimum strain and maximum strain under the ring period) under ε~N curve of fatigue (under same strain ratio, differently strained width with
The relation curve of its corresponding fatigue life) data, it has very important significance.
To obtain rubber material in typical case's strain than tired ε~N curve of fatigue under operating condition, existing technical solution is,
Column is tried by dumbbell shape rubber experiment, is based on same strain ratio, directly tests fatigue life from tired under 10,000 times~10,000,000 times
The combination in labor service life and strain amplitude, typically directly when experimental test, the fatigue life that experimental test is distributed is general are as follows: 10,000 times；
100000 times；500000 times；1000000 times；1500000 times；2000000 times；3000000 times；4000000 times；5000000 times；6000000 times；8000000
It is secondary；10000000 times, about totally 12 data points.But there are following disadvantages for the technical solution:
(I) directly test expends a large amount of experimentation cost, directly test same strain compare, fatigue life from 10,000 times~
It is bent to complete ε~N fatigue data of the strain than under for the combination of the corresponding strain amplitude of times of fatigue under 10000000 times
Line, theory need to test 12 data points, and the accumulative total degree of testing fatigue reaches 40,000,000 times, and test job amount is huge, no
It only needs to prepare a large amount of rubber experiment sample, and occupies testing equipment for a long time, influence the development of other projects.
(II) discreteness that straightway testing test is shown results in the need for a large amount of repetitive test, and rubber fatigue tests table
Reveal apparent discreteness, for the stability for ensuring fatigue data, test same fatigue data point, at least needs to repeat to survey
Therefore examination 3 times or more completes the experimental test of tired ε~N curve of fatigue data of the strain than under, theory need into
36 fatigue tests of row, tired total degree reach 1.2 hundred million times or more.
(III) testing fatigue of long time period is difficult to meet the needs of Formula Development and research and development of products, a kind of usual rubber
Glue material needs to test three groups of strains than ε~N curve of fatigue data under (0, a (between 0~-1), -1), and completely complete this three
The experimental test of ε~N curve of fatigue data of the kind strain than under needs if tested only with an equipment up to 2 years
Test period, and in order to shorten the test period, even if test simultaneously using multiple devices, the relative cycle tested
It is difficult to receive, thus is unable to satisfy the needs of Formula Development and rubber shock-absorbing product exploitation.
Summary of the invention
The technical problem to be solved in the present invention: tired for rubber material is obtained by direct experimental test completely at present
Labor ε~N curve data, spent by test period it is long, occupy the of long duration of testing equipment, fatigue data can not be provided in time
To meet the deficiency of Formula Development and research and development of products needs, the rubber material that test supports less, has a wide range of application needed for one kind is provided
ε~N curve of fatigue under the typical carrying operating condition of material tests acquisition methods.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of rubber material typical case carries ε~N curve of fatigue under operating condition and tests acquisition methods, and step includes:
1) three basic strain ratios of fatigue test are determined according to the practical application operating condition of rubber material；
2) test than carrying out three test data points is strained substantially for each, and three test data points are corresponding not
Same preset fatigue load-up condition；
3) rubber experiment sample is modeled, the magnitude of load of simulation calculation rubber experiment sample is corresponding with principal strain
Relationship obtains the relation curve between the load and principal strain of rubber experiment sample；
4) it determines the fatigue load spectral condition for carrying out fatigue test, calculates rubber experiment sample and strained more most than under in typical case
Big strain and minimum strain, from finding maximum strain and minimum in the relation curve of the load of rubber experiment sample and its principal strain
The corresponding load value of strain, so that it is determined that the fatigue load spectrum of fatigue test out；
5) fatigue test is carried out according to the fatigue load spectrum, fatigue mistake occurs in rubber experiment sample when recording fatigue test
The relation data between times of fatigue and repeated strain when effect；
6) relation data between times of fatigue and repeated strain when fatigue failure being occurred in rubber experiment sample is brought into
Fatigue equation shown in formula (1), and it is fitted the damage parameters for solving and obtaining rubber material under three basic strain ratios；
In formula (1), εRIndicate the principal strain of rubber experiment sample intermediate region, NRIndicate rubber experiment sample intermediate region
Principal strain corresponding to times of fatigue, Np indicate fatigue life damage parameters, ε p indicate rubber material repeated strain characteristic
Damage parameters, Mp indicate rubber material fatigue properties fatigue exponent；
7) damage parameters according to rubber material under three basic strain ratios, utilize fatigue equation meter shown in formula (2)
Fatigue data of the rubber material between 10,000 times~10,000,000 times under the different fatigue service life is calculated, it is tired at 12 to obtain rubber material
Strain amplitude ε under labor pointAWith the composition of relations of fatigue life N, according to strain amplitude ε of the rubber material under 12 fatigue pointsAWith it is tired
The composition of relations of labor service life N generates the tired ε~N curve of fatigue of the rubber material in three basic strains than under；
In formula (2), εRIndicate the principal strain of rubber experiment sample intermediate region, NRIndicate rubber experiment sample intermediate region
Principal strain corresponding to times of fatigue, Np indicate fatigue life damage parameters, ε p indicate rubber material repeated strain characteristic
Damage parameters, Mp indicate rubber material fatigue properties fatigue exponent.
Preferably, the rubber material in step 1) specifically refers to vulcanized rubber material, in the basic strain ratio of three determined,
First strain is set as 0 than λ, and second strain is set as -1 than ε, and third is strained than β between 0~-1.
Preferably, preset fatigue load-up condition specifically refers in step 2): for three basic strains than λ, β and ε, strain
Than λ be 0 when repeated strain width be respectively 1.4,0.8,0.4 3 kind of fatigue loading conditions；Repeated strain width point when strain is than being β
It Wei not 1.5,0.9,0.5 3 kind of fatigue loading conditions；Strain than ε be -1 when repeated strain width be respectively 1.6,1.0,0.6 3 kind
Fatigue loading conditions.
Preferably, the letter of maximum strain and minimum strain of the rubber experiment sample under typical strain ratio is calculated in step 4)
Shown in number expression formula such as formula (3)；
In formula (3), εmaxIndicate maximum strain of the rubber experiment sample under typical strain ratio, R indicates strain ratio, εATable
Show strain amplitude of the rubber experiment sample under typical strain ratio, εminIndicate minimum of the rubber experiment sample under typical strain ratio
Strain.
Preferably, the detailed step of step 5) includes:
5.1) according to the fatigue loading conditions of the design fatigue test, the fatigue loading conditions include multiple test sequences
Column, the information of the Test Sequences include strain than R, strain amplitude εA, fatigue load spectrum and test number (TN)；
5.2) according to the fatigue loading conditions of design, on special fatigue test machine, fatigue is carried out to rubber fatigue sample
The operating condition of test and fatigue test is that test frequency is 1~10Hz, and test temperature is 22 DEG C ± 3 DEG C；During the test, for
The test each time of each Test Sequences, stopping at once when the immediate movement width of rubber experiment sample is more than preset condition should
Secondary test, and each test of the Test Sequences is finally obtained into the fatigue test that results are averaged as the Test Sequences
As a result；
Preferably, the immediate movement width of rubber experiment sample is more than that preset condition specifically refers to meet formula in step 5.2)
(4) functional relation shown in；
In formula (4), δtIndicate the immediate movement width of rubber experiment sample, δ0Indicate the initial displacement width of rubber experiment sample.
Rubber material typical case of the present invention carries ε~N curve of fatigue test acquisition methods under operating condition and has an advantage that this
Invention only needs to carry out direct fatigue test test in 9 test data points of three strains than under, passes through the fatigue side ε~N
Journey fitting, which solves, obtains ε~N damage parameters, recycles the data processing softwares such as excel that can draw out rubber material at three
Tired ε~N the curve of fatigue of the test strain than under, it is only necessary to which less test support can draw out rubber material and hold in typical case
Complete fatigue ε~N curve of fatigue under operating condition is carried, the design of tired ε~N curve of fatigue of vulcanized rubber material is mainly used for
And draw, it is particularly suitable for vulcanized rubber of the shore hardness between 50 °~65 °, while being also applied for the tired of polyurethane damping material
The design and drafting of labor ε~N curve of fatigue have the advantages that required test supports less, has a wide range of application.
Detailed description of the invention
Fig. 1 is the basic procedure schematic diagram of present invention method.
Fig. 2 is the structure chart of rubber experiment sample in the embodiment of the present invention
Fig. 3 is the illustraton of model of rubber experiment sample in the embodiment of the present invention.
Fig. 4 is the affiliated area schematic diagram of the repeated strain of rubber experiment sample in the embodiment of the present invention.
Fig. 5 is the relation curve of the load and its principal strain of rubber experiment sample in the embodiment of the present invention.
Fig. 6 is the tired ε~N curve of fatigue of the rubber material in three basic strains than under in the embodiment of the present invention.
Specific embodiment
Referring to Fig. 1, the present embodiment rubber material typical case carries the step of ε~N curve of fatigue test acquisition methods under operating condition
Suddenly include:
1) three basic strain ratios of fatigue test are determined according to the practical application operating condition of rubber material；
In the present embodiment, the rubber material in step 1) specifically refers to vulcanized rubber material, the basic strain of three determined
Than in, first strain is set as 0 than λ, and second strain is set as -1 than ε, and third is strained than β between 0~-1, and
The occurrence of the basic strain ratio of third is according to the practical application operating condition of rubber material, determines rubber material by finite element method
The rough strain ratio that material may be born in practical applications obtains.
2) test than carrying out three test data points is strained substantially for each, and three test data points are corresponding not
Same preset fatigue load-up condition；
In the present embodiment, preset fatigue load-up condition is specifically referred in step 2): it is strained substantially for three than λ, β and ε,
Strain than λ be 0 when repeated strain width be respectively 1.4,0.8,0.4 3 kind of fatigue loading conditions；Repeated strain when strain is than being β
Width is respectively 1.5,0.9,0.5 3 kind of fatigue loading conditions；Strain than ε be -1 when repeated strain width be respectively 1.6,1.0,0.6
Three kinds of fatigue loading conditions.
3) rubber experiment sample is modeled, the magnitude of load of simulation calculation rubber experiment sample is corresponding with principal strain
Relationship obtains the relation curve between the load and principal strain of rubber experiment sample；
In the present embodiment, rubber experiment sample is specially the structure (as shown in Figure 2) of dumbbell shape rubber examination column, height A
It is 30mm for 50mm, minimum diameter B, the radius C of round sides is 36mm, (furthermore can also use it using ABAQUS software
His general finite element software) finite element modeling is carried out, the model of obtained rubber experiment sample is as shown in Figure 3.It utilizes
ABAQUS software, which solves, to be calculated, and using load as ordinate, is with the principal strain on the rubber fatigue sample middle region in Fig. 4
Abscissa, wherein A be elongation strain state, C be compression strain state, using 10N as the incremental step of power, draw out load be-
The relation curve of load and its principal strain between 1000N~1000N is as shown in Figure 5.
4) it determines the fatigue load spectral condition for carrying out fatigue test, calculates rubber experiment sample and strained more most than under in typical case
Big strain and minimum strain, from finding maximum strain and minimum in the relation curve of the load of rubber experiment sample and its principal strain
The corresponding load value of strain, so that it is determined that the fatigue load spectrum of fatigue test out；
Maximum strain and minimum strain of the rubber experiment sample under typical strain ratio are calculated in the present embodiment, in step 4)
Function expression such as formula (3) shown in；
In formula (3), εmaxIndicate maximum strain of the rubber experiment sample under typical strain ratio, R indicates strain ratio, εATable
Show strain amplitude of the rubber experiment sample under typical strain ratio, εminIndicate minimum of the rubber experiment sample under typical strain ratio
Strain.
5) fatigue test is carried out according to fatigue load spectrum, when fatigue failure occurs in rubber experiment sample when recording fatigue test
Times of fatigue and repeated strain between relation data；
In the present embodiment, the detailed step of step 5) includes:
5.1) fatigue loading conditions of fatigue test are designed, fatigue loading conditions include multiple Test Sequences, Test Sequences
Information include strain than R, strain amplitude εA, fatigue load spectrum and test number (TN)；In the present embodiment, fatigue loading conditions are specifically such as
Shown in table 1；
Table 1: the fatigue loading conditions of fatigue test.
According to the Test Sequences in table 1, maximum load corresponding to its maximum strain and minimum strain is found out from Fig. 5
Fmax (i) and minimum load Fmin (i), the input as fatigue load spectrum in table 1.For example, Test Sequences 1 are directed to, from Fig. 5
In find out maximum load Fmax (1) and minimum load Fmin (1) corresponding to its maximum strain and minimum strain, and so on.
5.2) according to the fatigue loading conditions of design, on special fatigue test machine, fatigue is carried out to rubber fatigue sample
The operating condition of test and fatigue test is that test frequency is 1~10Hz, and test temperature is 22 DEG C ± 3 DEG C；During the test, for
The test each time of each Test Sequences, stopping at once when the immediate movement width of rubber experiment sample is more than preset condition should
Secondary test, and each test of the Test Sequences is finally obtained into the fatigue test that results are averaged as the Test Sequences
As a result；Referring to table 1 it is found that the test number (TN) in the present embodiment under each Test Sequences is 3, therefore by the Test Sequences
3 tests obtain the fatigue test results that results are averaged as the Test Sequences；
In the present embodiment, the immediate movement width of rubber experiment sample is more than that preset condition specifically refers to meet in step 5.2)
Functional relation shown in formula (4)；
In formula (4), δtIndicate the immediate movement width of rubber experiment sample, δ0Indicate the initial displacement width of rubber experiment sample.
6) relation data between times of fatigue and repeated strain when fatigue failure being occurred in rubber experiment sample is brought into
Fatigue equation shown in formula (1), and it is fitted the damage parameters for solving and obtaining rubber material under three basic strain ratios；
In formula (1), εRIndicate the principal strain of rubber experiment sample intermediate region, NRIndicate rubber experiment sample intermediate region
Principal strain corresponding to times of fatigue, Np indicate fatigue life damage parameters, ε p indicate rubber material repeated strain characteristic
Damage parameters, Mp indicate rubber material fatigue properties fatigue exponent；
It is specifically to solve to obtain rubber material under three basic strain ratios using the fitting of Matlab software in the present embodiment
Damage parameters, finally obtained damage parameters table is as shown in table 2；
| Strain ratio | εp | Np | Mp |
| 0 | εp1 | Np1 | Mp1 |
| β (- 1~0) | εp2 | Np2 | Mp2 |
| -1 | εp3 | Np3 | Mp3 |
7) damage parameters according to rubber material under three basic strain ratios, utilize fatigue equation meter shown in formula (2)
Fatigue data of the rubber material between 10,000 times~10,000,000 times under the different fatigue service life is calculated, it is tired at 12 to obtain rubber material
Strain amplitude ε under labor pointAWith the composition of relations (as shown in table 3) of fatigue life N, according to rubber material under 12 fatigue points
Strain amplitude εATired ε~N fatigue of the rubber material in three basic strains than under is generated respectively with the composition of relations of fatigue life N
Curve, as shown in Figure 6；
In formula (2), εRIndicate the principal strain of rubber experiment sample intermediate region, NRIndicate rubber experiment sample intermediate region
Principal strain corresponding to times of fatigue, Np indicate fatigue life damage parameters, ε p indicate rubber material repeated strain characteristic
Damage parameters, Mp indicate rubber material fatigue properties fatigue exponent.
Table 3: strain amplitude ε of the rubber material under 12 fatigue pointsAWith the composition of relations of fatigue life N
To sum up, it is that one kind is answered that the present embodiment rubber material typical case, which carries ε~N curve of fatigue test acquisition methods under operating condition,
For the design and method for drafting of the ε~N curve of fatigue of the rubber material typical case strain than under, the present embodiment rubber material typical case is held
Carrying ε~N curve of fatigue test acquisition methods under operating condition needs the 9 test data points progress strained than under to three typical cases straight
The fatigue test test connect, and ε~N damage parameters that rubber material is calculated are solved by the fitting of ε~N fatigue equation, then
Using data processing softwares such as excel, rubber material is drawn using strain amplitude as abscissa, by ordinate of fatigue life at three
Tired ε~N curve of the test strain than under.The present embodiment rubber material typical case carries ε~N curve of fatigue test under operating condition and obtains
Take method that tradition can effectively be overcome to obtain rubber material fatigue ε~N curve of fatigue number by direct experimental test completely
According to, spent by test period it is long, occupy the of long duration of testing equipment, be unable to satisfy Formula Development and research and development of products need and
When rely on the deficiency of fatigue data etc., have the advantages that required test supports less, has a wide range of application.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of rubber material typical case carries ε~N curve of fatigue under operating condition and tests acquisition methods, it is characterised in that step packet
It includes:
1) three basic strain ratios of fatigue test are determined according to the practical application operating condition of rubber material；
2) for each strain substantially than progress three test data points test, and three test data points correspond to it is different
Preset fatigue load-up condition；
3) rubber experiment sample is modeled, the magnitude of load of simulation calculation rubber experiment sample is corresponding with principal strain to close
System, obtains the relation curve between the load and principal strain of rubber experiment sample；
4) it determines the fatigue load spectral condition for carrying out fatigue test, calculates maximum of the rubber experiment sample under typical strain ratio and answer
Become and minimum strain, from finding maximum strain and minimum strain in the relation curve of the load of rubber experiment sample and its principal strain
Corresponding load value, so that it is determined that the fatigue load spectrum of fatigue test out；
5) fatigue test is carried out according to the fatigue load spectrum, when fatigue failure occurs in rubber experiment sample when recording fatigue test
Times of fatigue and repeated strain between relation data；
6) relation data between times of fatigue and repeated strain when fatigue failure being occurred in rubber experiment sample brings formula (1) into
Shown in fatigue equation, and be fitted the damage parameters for solving and obtaining rubber material under three basic strain ratios；
In formula (1), εRIndicate the principal strain of rubber experiment sample intermediate region, NRIndicate the master of rubber experiment sample intermediate region
The corresponding times of fatigue of strain, Np indicate that the damage parameters of fatigue life, ε p indicate the tired of rubber material repeated strain characteristic
Labor parameter, Mp indicate the fatigue exponent of rubber material fatigue properties；
7) damage parameters according to rubber material under three basic strain ratios, are calculated using fatigue equation shown in formula (2)
Fatigue data of the rubber material between 10,000 times~10,000,000 times under the different fatigue service life, obtains rubber material in 12 fatigue points
Under strain amplitude εAWith the composition of relations of fatigue life N, according to strain amplitude ε of the rubber material under 12 fatigue pointsAWith the tired longevity
The composition of relations for ordering N generates the tired ε~N curve of fatigue of the rubber material in three basic strains than under；
In formula (2), εRIndicate the principal strain of rubber experiment sample intermediate region, NRIndicate the master of rubber experiment sample intermediate region
The corresponding times of fatigue of strain, Np indicate that the damage parameters of fatigue life, ε p indicate the tired of rubber material repeated strain characteristic
Labor parameter, Mp indicate the fatigue exponent of rubber material fatigue properties.
2. rubber material typical case according to claim 1 carries ε~N curve of fatigue under operating condition and tests acquisition methods,
It is characterized in that, the rubber material in step 1) specifically refers to vulcanized rubber material, and in the basic strain ratio of three determined, first
A strain is set as 0 than λ, and second strain is set as -1 than ε, and third is strained than β between 0~-1.
3. rubber material typical case according to claim 2 carries ε~N curve of fatigue under operating condition and tests acquisition methods,
It is characterized in that, preset fatigue load-up condition specifically refers in step 2): for three basic strains than λ, β and ε, λ is compared in strain
Repeated strain width is respectively 1.4,0.8,0.4 3 kind of fatigue loading conditions when being 0；Repeated strain width difference when strain is than being β
For 1.5,0.9,0.5 3 kind of fatigue loading conditions；When strain than ε is -1 repeated strain width be respectively 1.6,1.0,0.6 3 kind it is tired
Labor load-up condition.
4. rubber material typical case according to claim 1 carries ε~N curve of fatigue under operating condition and tests acquisition methods,
It is characterized in that, calculating the function table of maximum strain and minimum strain of the rubber experiment sample under typical strain ratio in step 4)
Up to shown in formula such as formula (3)；
In formula (3), εmaxIndicate maximum strain of the rubber experiment sample under typical strain ratio, R indicates strain ratio, εAIndicate rubber
Strain amplitude of the test sample under typical strain ratio, εminIndicate minimum strain of the rubber experiment sample under typical strain ratio.
5. rubber material typical case according to claim 1 carries ε~N curve of fatigue under operating condition and tests acquisition methods,
It is characterized in that, the detailed step of step 5) includes:
5.1) fatigue loading conditions of fatigue test are designed, the fatigue loading conditions include multiple Test Sequences, the test
The information of sequence includes strain than R, strain amplitude εA, fatigue load spectrum and test number (TN)；
5.2) according to the fatigue loading conditions of design, on special fatigue test machine, fatigue test is carried out to rubber fatigue sample
And it is 1~10Hz that the operating condition of fatigue test, which is test frequency, test temperature is 22 DEG C ± 3 DEG C；During the test, for each
The test each time of a Test Sequences stops the secondary examination when the immediate movement width of rubber experiment sample is more than preset condition at once
It tests, and each test of the Test Sequences is finally obtained into the fatigue test knot that results are averaged as the Test Sequences
Fruit；
6. rubber material typical case according to claim 5 carries ε~N curve of fatigue under operating condition and tests acquisition methods,
It is characterized in that, the immediate movement width of rubber experiment sample is more than that preset condition specifically refers to meet formula (4) institute in step 5.2)
The functional relation shown；
In formula (4), δtIndicate the immediate movement width of rubber experiment sample, δ0Indicate the initial displacement width of rubber experiment sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610976473.4A CN106568661B (en) | 2016-11-07 | 2016-11-07 | A kind of rubber material typical case carries ε~N curve of fatigue under operating condition and tests acquisition methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610976473.4A CN106568661B (en) | 2016-11-07 | 2016-11-07 | A kind of rubber material typical case carries ε~N curve of fatigue under operating condition and tests acquisition methods |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106568661A CN106568661A (en) | 2017-04-19 |
| CN106568661B true CN106568661B (en) | 2019-06-21 |
Family
ID=58540260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610976473.4A Active CN106568661B (en) | 2016-11-07 | 2016-11-07 | A kind of rubber material typical case carries ε~N curve of fatigue under operating condition and tests acquisition methods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106568661B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398430B (en) * | 2019-07-19 | 2020-09-15 | 武汉钢铁有限公司 | Equal-amplitude full-strain-life curve testing method for metal material |
| CN111693387A (en) * | 2020-06-15 | 2020-09-22 | 一汽解放汽车有限公司 | Method for determining minimum number of rapid fatigue tests |
| CN113281069A (en) * | 2021-06-16 | 2021-08-20 | 中国第一汽车股份有限公司 | Method, device and medium for improving load precision of automobile rubber bushing endurance test |
| CN113409900A (en) * | 2021-06-18 | 2021-09-17 | 广东技术师范大学 | Method and device for acquiring strain-life characteristic curve of rubber material |
| CN115112503B (en) * | 2022-06-27 | 2024-05-07 | 广东技术师范大学 | Method for acquiring probability fatigue life curve of rubber material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975704A (en) * | 2010-10-08 | 2011-02-16 | 中国船舶重工集团公司第七二五研究所 | Method for predicting vibration fatigue performance of viscoelastic material |
| CN102866071A (en) * | 2012-10-23 | 2013-01-09 | 朱占元 | Building method of ice layer dynamic settlement prediction model |
| CN104849154A (en) * | 2015-05-10 | 2015-08-19 | 北京工业大学 | Identification method for fatigue failure of pitch under dynamic shear load effect |
| CN205067249U (en) * | 2015-09-25 | 2016-03-02 | 山东交通学院 | When thickness road surface structure fatigue test device based on MTS |
| KR20160027528A (en) * | 2014-09-01 | 2016-03-10 | 주식회사 대한항공 | Method for testing contact fatigue test of composit structure |
| CN106043739A (en) * | 2016-07-30 | 2016-10-26 | 董超超 | Airplane with intelligent monitoring function |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012093231A (en) * | 2010-10-27 | 2012-05-17 | Mitsubishi Heavy Ind Ltd | Fatigue testing device |
| JP2013053993A (en) * | 2011-09-06 | 2013-03-21 | Ihi Corp | Fatigue strength measuring method |
-
2016
- 2016-11-07 CN CN201610976473.4A patent/CN106568661B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975704A (en) * | 2010-10-08 | 2011-02-16 | 中国船舶重工集团公司第七二五研究所 | Method for predicting vibration fatigue performance of viscoelastic material |
| CN102866071A (en) * | 2012-10-23 | 2013-01-09 | 朱占元 | Building method of ice layer dynamic settlement prediction model |
| KR20160027528A (en) * | 2014-09-01 | 2016-03-10 | 주식회사 대한항공 | Method for testing contact fatigue test of composit structure |
| CN104849154A (en) * | 2015-05-10 | 2015-08-19 | 北京工业大学 | Identification method for fatigue failure of pitch under dynamic shear load effect |
| CN205067249U (en) * | 2015-09-25 | 2016-03-02 | 山东交通学院 | When thickness road surface structure fatigue test device based on MTS |
| CN106043739A (en) * | 2016-07-30 | 2016-10-26 | 董超超 | Airplane with intelligent monitoring function |
Non-Patent Citations (3)
| Title |
|---|
| Cyclic loadings and crystallization of natural rubber:An explanation of fatigue crack propagation reinforcement under a positive loading ratio;N.Saintier et al.;《Materials Science and Engineering A》;20111231;第1078-1086页 |
| 有限元法在机车车辆橡胶元件设计中的应用;晏红文 等;《机车电传动》;20071110(第6期);第29-33页 |
| 橡胶减振元件加速寿命试验的仿真研究;王伯平 等;《机电工程》;20130430;第30卷(第4期);第399-402页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106568661A (en) | 2017-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106568661B (en) | A kind of rubber material typical case carries ε~N curve of fatigue under operating condition and tests acquisition methods | |
| Nguyen‐Xuan et al. | Computation of limit and shakedown loads using a node‐based smoothed finite element method | |
| Behroozi et al. | Finite element analysis of aircraft tyre–Effect of model complexity on tyre performance characteristics | |
| CN105447316B (en) | A kind of progressive damage method for predicting the residual life of composite material blade containing initial imperfection | |
| Valinčius et al. | Integrated assessment of failure probability of the district heating network | |
| CN104236889B (en) | Optimization design method for storage life of rubber seal ring | |
| Zhao et al. | Modeling and Verification of a New Hyperelastic Model for Rubber‐Like Materials | |
| CN103698236A (en) | Method for estimating fatigue life of pipeline of nuclear power plant | |
| Contini et al. | New methods to determine the importance measures of initiating and enabling events in fault tree analysis | |
| Lei et al. | Constrained observability method in static structural system identification | |
| Wei et al. | A generalized rate-dependent constitutive law for elastomeric bearings | |
| CN104320271B (en) | A kind of network equipment safety evaluation method and device | |
| CN108693054B (en) | Progressive damage algorithm for spectrum-borne fatigue life of composite material structure | |
| CN108710946A (en) | The human factors analysis balancing method of deepwater riser system risk-based maintenance decision optimization | |
| Arora et al. | Fatigue life assessment of 65Si7 leaf springs: a comparative study | |
| Huang et al. | Shaking table tests of the cable tray system in nuclear power plants | |
| Paolacci et al. | Seismic design criteria of refinery piping systems | |
| Luo et al. | Rubber-unloading-behaviour evaluation using product-orientated specimen based on a resilience test | |
| Fang et al. | Joint back‐analysis for dynamic material parameters of concrete dam based on time‐frequency domain information | |
| Zhang et al. | Experimental and analytical investigations on horizontal behavior of full-scale thick rubber bearings | |
| Luo et al. | Mullins effect modelling and experiment for anti-vibration systems | |
| Nakamura | Numerical Investigation on Strength of Tee Pipes Under In-Plane/Out-of-Plane Cyclic Loading | |
| Habibi et al. | Inelastic damage analysis of RCMRFS using pushover method | |
| Iwamoto | A Study on nonlinear characteristics of rubber isolator | |
| Alfon et al. | Application of hoop stress limit state and predicted corrosion rate in underground gas transmission pipeline inspection plan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |