CN105279377B - A kind of Processing for Data Analysis in Physics of CONSTRUCTED SPECIFICATION fatigue rated value experiment - Google Patents
A kind of Processing for Data Analysis in Physics of CONSTRUCTED SPECIFICATION fatigue rated value experiment Download PDFInfo
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- CN105279377B CN105279377B CN201510698954.9A CN201510698954A CN105279377B CN 105279377 B CN105279377 B CN 105279377B CN 201510698954 A CN201510698954 A CN 201510698954A CN 105279377 B CN105279377 B CN 105279377B
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Abstract
The invention discloses a kind of Processing for Data Analysis in Physics of new CONSTRUCTED SPECIFICATION fatigue rated value (DFR) experiment, belong to structural fatigue intensity experiment, analysis and the technical field assessed.Comprise the following steps：First, require to obtain the fatigue experiment data of each test specimen according to related experiment：Stress level and fatigue life；Secondly, according to each test specimen stress level not of uniform size, select suitable reduced stress horizontal；Again, for the experimental data of each test specimen, based on stress life convert formula, it is calculated corresponding to reduced stress horizontal conversion fatigue life；Finally, the design manual according to related DFR methods obtains examining the DFR allowable values at position in the structure.This method due to introducing stress life convert formula, thus with have a wide range of application, processing procedure is clear and definite, computational methods are simple the advantages of.
Description
Technical field
The invention belongs to the technical field of structural fatigue performance test test, particularly a kind of CONSTRUCTED SPECIFICATION fatigue rated value
The Processing for Data Analysis in Physics of experiment.
Background technology
In engineering structure, fatigue rupture be a kind of most commonly seen failure mode (1.Suresh S., material
Fatigue, Beijing, National Defense Industry Press, light etc. is translated in king, and 1999).The complexity of fatigue rupture is its material by component
The characteristics of material, service load, type and size etc. factor strong influence (2. Yao's satellites, structure fatigue life analysis, Beijing,
National Defense Industry Press, 2003；3. Xu Hao, fatigue strength, Beijing, Higher Education Publishing House, 1988).Even if certain is clarified
The mechanical mechanism of fatigue rupture, corresponding fatigue analysis method or theory are established, often still still needed by some realities
Test to determine or verify some crucial mechanical quantities.So test typically indispensable for relieving fatigue problem
A kind of important means.
In civil aircraft field of structural design, in the 1980s, being based on standard S-N curves, establish a kind of simple real
Civil aircraft durability analysis method, i.e., analysis of fatigue and fatigue are carried out to structure using detail fatigue rating (DFR)
Quality estimating.DFR is the fatigue behaviour characteristic value of structure inherently, i.e. the substantially tired allowable value of structure, is a kind of to structure
The measurement of part robust to repeated load-carrying ability, it is unrelated with the load used.The value be in stress ratio R=0.06, confidence level 95%,
Reliability is that structure can bear 10 under 95% requirement5Maximum nominal stress value (fatigue strength) corresponding to secondary circulation.Due to
The theoretical foundation of DFR methods is more solid, computational accuracy is satisfactory, operating process very clearly, engineer applied it is very convenient,
(4. Yuan Wei, Sun Qin, DFR have thus been widely used in the antifatigue durability Design of the engineering fields such as aircaft configuration
Method CONSTRUCTED SPECIFICATION Fatigue Strength Analysis Shanxi technology Academy journals, 2007,23 (1):9‐11.).
The tired allowable value of a certain connecting portion of labyrinth must use experiment to determine.And in the experiment of existing DFR methods
In data processing method, it is desirable to examined in each test specimen position in experimentation in same stress level (5. Lee make virtue etc.,
Civil aircraft structures durability and damage tolerance design handbook:First volume fatigue design and analysis Beijing, aircraft industry publishing house,
2003).This requirement generally all can bring higher difficulty to testing, increase detection time and extra charge, and
This requirement is even difficult to meet in some cases.It can not also be handled for the experimental data prior art of different stress levels,
And the data of the often different stress levels obtained in experimentation.
The content of the invention
It is an object of the invention to provide a kind of Processing for Data Analysis in Physics of new CONSTRUCTED SPECIFICATION fatigue rated value experiment,
To solve the problems, such as to obtain structural DFR allowable value according to the Data Processing in Experiment under different stress levels.
The technical solution for realizing the object of the invention is：At a kind of experimental data of CONSTRUCTED SPECIFICATION fatigue rated value experiment
Reason method, comprises the following steps：
(1) experimental data is obtained by experiment
According to the requirement of DFR experimental methods, test specimen is designed, a collection of test specimen of same size is tested, each test specimen
A pair of experimental datas will be all obtained, the experimental data of i-th of test specimen is designated as stress level σiAnd fatigue life Ni, then n test specimen
N be can obtain to experimental data, i=1~n；
(2) select reduced stress horizontal
In these stress levels σ of all test specimensiValue among, select a stress value conduct near the median
The stress level of conversion
(3) conversion fatigue life is determined
The fatigue life N for testing to obtain based on each test specimeni, i.e.,
It is calculated horizontal corresponding to reduced stressConversion fatigue life valueCorrespond in fact so as to obtain the test specimen
Test the conversion data of data：Reduced stress is horizontalConvert fatigue life
(4) characteristics life estimate is determined
It is horizontal by reduced stressConvert fatigue lifeObtain characteristics life estimate
(5) the basic reliability life-span is determined
By characteristics life estimateDetermine basic reliability life-span N95/95, i.e.,
Wherein, STFor test specimen coefficient, SCFor confidence coefficient, SRFor coefficient of reliability；
(6) DFR allowable values are obtained
By basic reliability life-span N95/95, reduced stress it is horizontalAccording in the relevant design handbook of DFR experimental methods
Associated materials S-N curve maps i.e. can obtain the DFR allowable values that the structural test piece examines position.
The present invention compared with prior art, its remarkable advantage：(1) application is wide.The present invention is applicable not only to existing
The test situation of method, apply also for the different test situation of stress level that current methods can not be applicable.(2) processing procedure is bright
Really.On the basis of current methods, for the situation that stress level is different, stress life convert formula is introduced, adds stress
The selection and calculating of life-span reduced value, thus the process of Data Processing in Experiment is very clear and definite.(3) using simple.Using the stress longevity
Life convert formula is acted upon to experimental data, and calculating process is simple, reliable results.
The present invention is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the flow chart of the Processing for Data Analysis in Physics of CONSTRUCTED SPECIFICATION fatigue rated value of the present invention experiment.
Embodiment
With reference to Fig. 1, the Processing for Data Analysis in Physics of CONSTRUCTED SPECIFICATION fatigue rated value of the present invention experiment, step is as follows：
(1) experimental data is obtained by experiment：According to the requirement of DFR methods, test specimen and experiment are rationally designed, to identical rule
The a collection of test specimen of lattice is tested.Each test specimen will obtain a pair of experimental datas, might as well be by i-th (i=1~n) test specimen
Experimental data is designated as stress level σiAnd fatigue life Ni, then n test specimen can obtain n to experimental data.Comprise the following steps that：
1. specimen Design：Test specimen is designed according to the actual needs of engineering, it is therefore an objective to so that the connecting portion hair examined
The probability highest of raw fatigue rupture.
2. experimental design：It is the determination for testing load first, it is therefore an objective to so that the test specimen life-span is in 103~106 circulations
In the range of, and load is alternate load, stress ratio R is 0.06.By taking i-th of test specimen as an example, load is maximum Fi-max
Minimum value Fi-min alternate load, then correspondingly, the stress of attachment structure is examined in crest σ i-max and trough σ i-min
Between do alternation change, its stress level σ i are peak stress σ i-max, and need to meet R=Fi-min/Fi-max=σ i-
Min/ σ i-max=0.06.
Next to that the clamping of test specimen, fixed and loading device design, it is therefore an objective to avoid as far as possible in fatigue test of structure
There is the structure failure mode outside being expected.
It is to reserve certain test specimen lab space again, it is therefore an objective to which being easy to observe, shoot and note down in experimentation destruction can
The mechanical characteristics at each position that can occur, and tired generation, development and change situation etc..
Finally to take necessary protective device, facility or measure, it is therefore an objective to prevent because rapid the crumbling of test specimen and
Damage equipment injures experimenter.
3. tested：Including carrying out equipment debugging, checking that test specimen, fixture and test specimen installation, related record fill with test
Appearance that installation and debugging, load application and the test device startup, observation structure put destroy etc..In the process, people is tested
Member wants the state that observation experiment is carried out, to determine whether excessive vibration, heating or other abnormal phenomenas.Examination is interrupted if necessary
Test or readjust.Carry out the record of experimental situation, experimentation and experimental data simultaneously, should number in need and useful
According to all recording.Sample should also be as carefully being checked, and the details that all relevant samples are destroyed all is write down,
And properly carry out the safeguard measures such as anticorrosion and keep sample in case check in the future.
(2) select reduced stress horizontal：In these stress levels σ of all test specimensiAmong the value of (i=1~n), selection
Stress level of one stress value near middle size as conversionFor example, the stress level of test specimen is respectively σi
(i=1~n), wherein having justIt is horizontal then to choose reduced stressForWherein reduced stress is horizontalIn the stress level σ that experiment obtainsiIt is middle to choose close to median σaverageFor experimental result.
(3) conversion fatigue life is determined：The fatigue life N for testing to obtain based on each test specimeni, i.e.,
It is calculated by above formula horizontal corresponding to reduced stressConversion fatigue life valueWherein, σm0It is structure
The strength degree of material, S are the gradient parameter of S-N curves, and the value of the two parameters can be in the relevant design handbook of DFR methods
(such as《Civil aircraft structures durability and damage tolerance design handbook:First volume fatigue design and analysis》P335 page table 7-1) in find.By
This, obtains the conversion data that the test specimen corresponds to experimental data：Reduced stress is horizontalConvert fatigue life
(4) characteristics life estimate is determined：It is horizontal based on the data reduced stress after conversionConvert fatigue life
Characteristics life estimate is calculated using following equation
When all n test specimens all destroy：
When there is r test specimen to destroy in n test specimen：
When all n test specimens do not destroy all：
Wherein, α is form parameter, its value can DFR methods relevant design handbook (such as《Civil aircraft structures durability and damage
Hinder tolerance design handbook:First volume fatigue design and analysis》) in find.
(5) the basic reliability life-span is determined：Feature based life estimation valueUsing following expression formula
Basic reliability life-span N is calculated95/95.Wherein, STFor test specimen coefficient, SCFor confidence coefficient, SRFor reliability system
Number, its value can DFR methods relevant design handbook (such as《Civil aircraft structures durability and damage tolerance design handbook:The first volume
Fatigue design and analysis》Middle P317 pages) find.
(6) obtain DFR allowable values (DFR allowable values are one of the result of detail fatigue rating in Data Processing in Experiment,
Both sides relation is described in design manual)：Based on basic reliability life-span N95/95And reduced stress is horizontalAccording to DFR side
Associated materials S-N curve maps in the relevant design handbook of method are (such as《Civil aircraft structures durability and damage tolerance design handbook:On
Volume fatigue design and analysis》) in Fig. 7-5 to Fig. 7-9, you can obtain the DFR allowable values that the structural member examines position.
The invention provides a kind of Processing for Data Analysis in Physics of new CONSTRUCTED SPECIFICATION fatigue rated value experiment.Existing
On the basis of Processing for Data Analysis in Physics based on same stress level, different answer is obtained for different time under many experiment conditions
The horizontal situation of power, by introducing stress life convert formula, the experimental data of different stress levels can be all converted to same
Reduced value during one stress level, so that new method proposed by the invention can be based on current methods, solves stress water
The problem of equalling each different time DFR Data Processing in Experiment.
Embodiment 1
The structure that a certain web is connected with more root posts, material are aluminium alloy, and according to the test requirements document of the present invention, it is more
The experimental data of individual test specimen has obtained and (has been shown in Table 1), but the stress level of each test specimen is different, now needs that its examination portion is calculated
The DFR allowable values of position.
Specific implementation comprises the following steps：
Step 1, the requirement of the experiment satisfaction present invention, specific data are as shown in the table.
The experimental data of table 1.
Wherein, the test specimen for examining position to be destroyed there occurs anticipation shares 5.
Step 2, in computational chart 1 stress level of 11 test specimens average value, have
The a certain stress level near median is such as selected, this can be chosen for the stress level of the 3rd test specimen
96.3MPa, it is horizontal as reduced stress, i.e.,
Step 3, look into《Civil aircraft structures durability and damage tolerance design handbook:First volume fatigue design and analysis》P335 page tables
7-1 obtains σm0=310MPa, S=2.0, according to stress life convert formula
Calculate the conversion fatigue life of each test specimenSuch as the 1st test specimen, have
Therefore the fatigue life after converting is as shown in the table.
Table 2. converted according to stress level after experimental data
Step 4, based on the data (as shown in table 2) after conversion, based on characteristics life estimate is calculated(unit：
It is secondary)：
Step 5, search《Civil aircraft structures durability and damage tolerance design handbook:First volume fatigue design and analysis》It can obtain,
Test specimen life-span ST=1.3, confidence coefficient SC=1.22, coefficient of reliability SR=2.1.Therefore the calculating structure basic reliability life-span is
Step 6, look into《Civil aircraft structures durability and damage tolerance design handbook:First volume fatigue design and analysis》P336 pages of figure
7-5 can obtain DFR=118MPa.
Claims (3)
1. a kind of Processing for Data Analysis in Physics of CONSTRUCTED SPECIFICATION fatigue rated value experiment, it is characterised in that comprise the following steps：
(1) experimental data is obtained by experiment
According to the requirement of DFR experimental methods, test specimen is designed, a collection of test specimen of same size is tested, each test specimen will
A pair of experimental datas are obtained, the experimental data of i-th of test specimen is designated as stress level σiAnd fatigue life Ni, then n test specimen can obtain
To n to experimental data, i=1~n；
(2) select reduced stress horizontal
In these stress levels σ of all test specimensiValue among, select a stress value near the median as conversion
Stress level
(3) conversion fatigue life is determined
The fatigue life N for testing to obtain based on each test specimeni, i.e.,
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According to conversion data：Reduced stress is horizontalConvert fatigue life
(4) characteristics life estimate is determined
It is horizontal by reduced stressConvert fatigue lifeObtain characteristics life estimate
When all n test specimens all destroy：
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(5) the basic reliability life-span is determined
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Wherein, STFor test specimen coefficient, SCFor confidence coefficient, SRFor coefficient of reliability；
(6) DFR allowable values are obtained
By basic reliability life-span N95/95, reduced stress it is horizontalAccording to the correlation in the relevant design handbook of DFR experimental methods
S-N Curve figure can obtain the DFR allowable values that the structural test piece examines position；
In step (2), the stress level of test specimen is respectively σi, wherein having justIt is horizontal then to choose reduced stress
For
2. the Processing for Data Analysis in Physics of CONSTRUCTED SPECIFICATION fatigue rated value experiment according to claim 1, it is characterised in that
Step in step (1) is as follows：
1. specimen Design：Test specimen is designed according to the actual needs of engineering so that fatigue rupture occurs for the connecting portion examined
Probability highest；
2. experimental design：It is the determination for testing load first so that i-th of test specimen life-span is in 103~106The scope of secondary circulation
It is interior, and load is alternate load, and stress ratio R is 0.06, and load is maximum Fi-maxWith minimum value Fi-minAlternate load,
Then the stress of examined attachment structure is in crest σi-maxWith trough σi-minBetween do alternation change, its stress level σiShould for peak value
Power σi-max, and R=Fi-min/Fi-max=σi-min/σi-max=0.06；
Next to that the clamping of test specimen, fixed and loading device design, avoid occurring expection in fatigue test of structure as far as possible
Outer structure failure mode；
To reserve certain test specimen lab space again, so as to observe, shoot and note down in experimentation destruction may occur it is each
The mechanical characteristics at position and generation, the development and change situation of fatigue；
3. tested：Including carrying out equipment debugging, checking test specimen, fixture and test specimen installation, related record and test device
Installation and debugging, the appearance that load applies and test device starts, observation structure destroys, in the process, testing crew will be seen
Examine experiment carry out state, with determine whether excessive vibration, heating or other abnormal phenomenas, while carry out experimental situation,
The record of experimentation and experimental data, institute's data in need should be all recorded；Sample should also be as carefully being examined
Look into, and the details that all relevant samples are destroyed all is write down, and carry out safeguard measure and keep sample in case examine in the future
Look into.
3. the Processing for Data Analysis in Physics of CONSTRUCTED SPECIFICATION fatigue rated value experiment according to claim 1, it is characterised in that
Reduced stress is horizontalIn the stress level σ that experiment obtainsiIt is middle to choose close to median σaverageFor experimental result.
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| CN106294953B (en) * | 2016-08-02 | 2019-07-23 | 浙江大学 | A kind of method for building up of the cement-based material probability of fatigue failure considering stress level and fatigue life probabilistic model |
| CN106468640A (en) * | 2016-09-08 | 2017-03-01 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of composite crushing Design permissible value test method |
| CN107145641B (en) * | 2017-04-13 | 2020-04-24 | 南京航空航天大学 | Blade vibration fatigue probability life prediction method |
| CN109490115B (en) * | 2018-12-12 | 2021-07-16 | 中国航空工业集团公司西安飞机设计研究所 | Test piece and method for testing tensile detail fatigue rating of oblique installation of bolt |
| CN110348167B (en) * | 2019-07-22 | 2021-03-16 | 北京航空航天大学 | Determination of metal detail fatigue rated strength cut-off value DFRcutoffIs a probabilistic model method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323272A (en) * | 2013-01-05 | 2013-09-25 | 中国航空工业集团公司西安飞机设计研究所 | DFR value upper limit determining method |
| CN103530486A (en) * | 2013-11-05 | 2014-01-22 | 中国航空工业集团公司西安飞机设计研究所 | Method for designing fatigue life of aircraft bolts |
| CN103942418A (en) * | 2014-04-03 | 2014-07-23 | 北京工业大学 | Method for determining specific fatigue strength rated value under multi-axial loading condition |
-
2015
- 2015-10-24 CN CN201510698954.9A patent/CN105279377B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323272A (en) * | 2013-01-05 | 2013-09-25 | 中国航空工业集团公司西安飞机设计研究所 | DFR value upper limit determining method |
| CN103530486A (en) * | 2013-11-05 | 2014-01-22 | 中国航空工业集团公司西安飞机设计研究所 | Method for designing fatigue life of aircraft bolts |
| CN103942418A (en) * | 2014-04-03 | 2014-07-23 | 北京工业大学 | Method for determining specific fatigue strength rated value under multi-axial loading condition |
Non-Patent Citations (3)
| Title |
|---|
| DFR法结构细节疲劳强度分析;袁伟，等;《陕西理工学院学报》;20070331;第23卷(第1期);第9-11页 * |
| 军机DFR方法在钛合金电子束横焊缝结构上的应用验证;宋恩鹏，等;《应用力学学报》;20141031;第715-720页 * |
| 某机型机身壁板对接区DFR强度分析;杨凤鹏，等;《2008全国MTS断裂测试研讨会》;20081009;第76-78页 * |
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