CN104361193B - A kind of life of product main frame manages determination method - Google Patents
A kind of life of product main frame manages determination method Download PDFInfo
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- CN104361193B CN104361193B CN201410397549.9A CN201410397549A CN104361193B CN 104361193 B CN104361193 B CN 104361193B CN 201410397549 A CN201410397549 A CN 201410397549A CN 104361193 B CN104361193 B CN 104361193B
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Abstract
A kind of life of product main frame manages determination method, and step is as follows：One：STRUCTURE DECOMPOSITION；The layer of structure for carrying out product decomposes；Two：Loading analysis；Load type suffered by determining each minimum indenture level unit of product is analyzed according to load type；Three：Determine mechanism；For product, each minimum indenture level unit, carries out mapping relations research one by one, obtains all possible mechanistic class of product each minimum indenture level unit；Four：Mechanism merges；The minimum indenture level unit for causing same mechanism for different loads type and constituting kinematic pair carries out mechanism merging；Five：Mechanism combined influence is analyzed；Six：Life of product main frame reason determines.The present invention may be directly applied to product, determines the main frame reason and its corresponding sensitive load type in impact life-span in the product life cycle and comprehensively determines the main frame reason for affecting life of product, and Analysis on Mechanism is comprehensive, thorough, is that the durability analysis of subsequent product lays the foundation.
Description
【Technical field】
The present invention provides a kind of life of product main frame and manages determination method, product longevity under more particularly to a kind of many mechanisms
Life main frame reason determination method, belongs to Life Analysis Technique field.
【Background technology】
The development of technology is put forward higher requirement to product, and with aspects such as product technology performance and structural requirements
Improve, life problems also more show protrusion.The existing mechanical part of part that included due to product, electrical category part have electrical type again
Part, therefore fault mode is more, the complicated mechanism that failure is produced.
For product, life problems are through in design, production, management, and this machine with the bottom for constituting product
Tool, electromechanics are closely bound up with electrical type part.Therefore, it is necessary to each level characteristics of combination product go analyzing influence life of product
Typical fault mechanism, while setting up life of product main frame reason determination method and analysis process.
【The content of the invention】
1st, goal of the invention
Present invention aims to existing durability analysis and Analysis on Mechanism technology, there is provided a kind of life of product main frame reason
Determine method.It is, after STRUCTURE DECOMPOSITION and the analysis of life cycle internal load are carried out to product, to determine in the product life cycle
The load type of each minimum indenture level unit, and all possible machine of each minimum indenture level unit is analyzed based on load type
Reason type, being then based on all possible mechanistic class analysis result carries out mechanism merging, finally carries out mechanism combined influence point
Analysis determines life of product main frame reason.
2nd, technical scheme
A kind of life of product main frame of the present invention manages determination method, and the method is comprised the following steps that：
Step one：STRUCTURE DECOMPOSITION.STRUCTURE DECOMPOSITION is constituted in clear and definite product structure, the basis of operation principle and operating characteristic
On, the layer of structure for carrying out product decomposes.
Step 2：Loading analysis.The each minimum indenture level of product is determined according to product life cycle internal load type analysis
Load type suffered by unit.
Step 3：Determine mechanism.On the basis of STRUCTURE DECOMPOSITION with loading analysis, each minimum about given layer for product
Sub-cell, it is considered to all possible load type, carries out mapping relations research one by one, obtains product each minimum indenture level
The all possible mechanistic class of unit, and on the basis of minimum indenture level unit and load type Unified coding, using number
Word 001～999 and letter A～Z combinations are encoded.
Step 4：Mechanism merges.Cause same mechanism for different loads type and constitute the minimum agreement of kinematic pair
Hierarchy unit carries out mechanism merging.
Step 5：Mechanism combined influence is analyzed.The analysis of mechanism combined influence affects tight according to mechanism Frequency and mechanism
Cruel degree grade comprehensively determines.Mechanism Frequency is given according to the interior field data of engineering experience and similar units is qualitative；Mechanism
Affect the influence degree that severity grade then may finally occur according to failure mechanism to determine, carry out according to following table 1.Mechanism is comprehensive
Closing impact analysis is carried out according to mechanism combined influence matrix shown in table 2.
1 severity tier definition of table
2 mechanism combined influence matrix of table
Step 6：Life of product main frame reason determines.According to the table 2 in step 5, mechanism combined influence analysis result is determined
Mechanism for the medium and its above is managed for life of product main frame.
Wherein, " STRUCTURE DECOMPOSITION " described in step one is including two parts content：1) product structure is divided：It is divided into
Initial indenture level, indenture level, minimum indenture level (structure composition can not carry out analytical product component units again), and root
Product structure figure is drawn according to the layer of structure of product；2) minimum indenture level unit numeral each to product 001～999 is pressed
Order Unified coding.
Wherein, " loading analysis " described in step 2 is including three partial contents：1) according to the given load of main frame
Spectrum or mission profile, carry out product overall load analysis first, obtain all possible service load in product life cycels
With environmental load type and its mode of action；2) combination product operation principle, according to each minimum indenture level unit and unit it
Between the way of contact and working method, while the service load and the environmental load Type Synthesis that consider suffered by product entirety determine it is each
Local load's type and its mode of action of minimum indenture level unit；3) load type is carried out unifying to compile with letter A～Z
Code.
Wherein, " the mechanism merging " described in step 4 is including two parts content：1) for same failure machine can be caused
The load of reason is merged, i.e., various load cause a kind of failure mechanism jointly；2) for the minimum about given layer of composition kinematic pair
Sub-cell carries out the mechanism of different minimum indenture level units and merges, i.e., multiple minimum indenture level units are collectively forming a kind of mistake
Effect mechanism.
3rd, advantage and effect
The present invention has advantages below：
1) a kind of life of product main frame reason determination method of the invention can determine shadow in the product life cycle by theory analysis
Ring the main frame reason and its corresponding sensitive load type in life-span.
2) a kind of life of product main frame of the invention manages determination method, is carried according to each minimum indenture level unit to product
Lotus and Analysis on Mechanism result, and comprehensively the Frequency of each mechanism comprehensively determines impact life of product with severity grade is affected
Main frame is managed, there is provided a kind of comprehensive, thorough mechanism based method analysis, are that the durability analysis of subsequent product lays the foundation.
【Description of the drawings】
Fig. 1 is the method for the invention flow chart.
Fig. 2 is engine driving pump group part supercharging fuel feeding subsystem layer of structure schematic diagram.
Fig. 3 is vibrational spectra schematic diagram.
In figure, symbol description is as follows:
| PSD(g2/Hz) | Axis of ordinates represents power spectral density, unit：G square per hertz |
| f(Hz) | Axis of abscissas represents frequency, unit：Hertz |
【Specific embodiment】
Below in conjunction with drawings and Examples, the present invention is described in further detail.
A kind of life of product main frame of the present invention manages determination method, as shown in Figure 1, is supplied with certain engine driving pump group part supercharging
Describe the present invention as a example by oil system in detail, the method is comprised the following steps that：
Step one：STRUCTURE DECOMPOSITION.STRUCTURE DECOMPOSITION is constituted in clear and definite product structure, the basis of operation principle and operating characteristic
On, the layer of structure for carrying out product decomposes.Mainly include：
A. product structure division is carried out, is divided into initial indenture level, indenture level, minimum indenture level, and is drawn
Product structure figure.Certain engine driving pump group part supercharging fuel feeding subsystem layer of structure is shown in Fig. 2.
B. minimum indenture level unit each to product carries out Unified coding with numeral 001～999.Certain engine driving pump group
The minimum indenture level cell encoding of part supercharging fuel feeding subsystem is shown in Table 3.
Table 3 certain Engine Driven Pump modular construction decomposition result
Step 2：Loading analysis.According to product life cycle internal load type analysis, loading analysis determines that product is each minimum
Load type suffered by indenture level unit.Mainly include：
A. according to the given loading spectrum of main frame or mission profile, product overall load analysis is carried out first, product is determined
All possible service load and environmental load type and its mode of action in life cycle management.The loading spectrum that wherein main frame gives
There are oil temperature, rotating speed spectrum and vibrational spectra, wherein as shown in table 4, vibrational spectra is shown in Fig. 3 for oil temperature, rotating speed spectrum.According to certain Engine Driven Pump
Component oil temperature, rotating speed routine stress loading spectrum carry out product work load class determined by product overall load analysis with vibrational spectra
Type is：Rotating speed, oil temperature；Environmental load type is：Environment temperature, vibration.
Table 4 certain engine driving pump group part oil temperature, rotating speed routine stress loading spectrum
B. combination product operation principle, analyzes the way of contact between each minimum indenture level unit and unit and work side
Formula, while the service load suffered by consideration product entirety determines the office of each minimum indenture level unit with environmental load Type Synthesis
Portion's service load type is：Pressure, rotating speed, oil temperature, movement load；Environmental load type is：Environment temperature, vibration.
C. carrying out Unified coding result with letter A～Z to load type is：Pressure (A), rotating speed (B), oil temperature (C), motion
Load (D), environment temperature (E), vibration (F).Certain engine driving pump group part is pressurized fuel feeding subsystem loading analysis result such as table 5
It is shown：
Table 5 certain engine driving pump group part is pressurized fuel feeding subsystem loading analysis result
Step 3：Determine mechanism.On the basis of STRUCTURE DECOMPOSITION with loading analysis, each minimum about given layer for product
Sub-cell, it is considered to all possible load type, carries out mapping relations research one by one, and analysis determines product each minimum agreement
The all possible mechanistic class of hierarchy unit, and on the basis of minimum indenture level unit and load type Unified coding, adopt
Encoded with numeral 001～999 and letter A～Z combinations.The each minimum indenture level unit mechanism of certain engine driving pump group part
Determine that result is as shown in table 6：
Certain the engine driving pump group part supercharging of table 6 fuel feeding subsystem mechanism determines result
Step 4：Mechanism merges.Cause to unify mechanism for different loads type and constitute the minimum agreement of kinematic pair
Hierarchy unit carries out mechanism merging.Mainly include：
A. the load for causing same failure mechanism is merged.
B. the minimum indenture level unit for constituting kinematic pair carries out the mechanism merging of different minimum indenture level units,
Unified is certain mechanistic class.
Certain engine driving pump group part supercharging fuel feeding subsystem mechanism amalgamation result is as shown in table 7：
Table 7 certain engine driving pump group part is pressurized fuel feeding subsystem mechanism amalgamation result
Step 5：Mechanism combined influence is analyzed.The analysis of mechanism combined influence affects tight according to mechanism Frequency and mechanism
Cruel degree grade comprehensively determines.Mechanism Frequency is given according to the interior field data of engineering experience and similar units is qualitative, can be joined
Examine table 1；Mechanism affects the influence degree that severity grade then may finally occur according to failure mechanism to determine.Mechanism combined influence
Analysis refers to mechanism combined influence matrix shown in table 2.Certain engine driving pump group part mechanism combined influence analysis result such as table 8
It is shown：
Table 8 certain engine driving pump group part is pressurized fuel feeding subsystem mechanism combined influence analysis result
Step 6：Life of product main frame reason determines.Mechanism combined influence analysis result is medium and the mechanism of the above is product
Product life-span main frame is managed.Certain engine driving pump group part supercharging fuel feeding subsystem life-span main frame reason determines that result is as shown in table 9：
Claims (6)
1. a kind of life of product main frame manages determination method, it is characterised in that：The method is comprised the following steps that：
Step one：STRUCTURE DECOMPOSITION；STRUCTURE DECOMPOSITION is constituted in clear and definite product structure, on the basis of operation principle and operating characteristic, enter
The layer of structure of row product decomposes；
Step 2：Loading analysis；The each minimum indenture level unit of product is determined according to product life cycle internal load type analysis
Suffered load type；
Step 3：Determine mechanism；On the basis of STRUCTURE DECOMPOSITION with loading analysis, each minimum indenture level list for product
Unit, it is considered to all possible load type, carries out mapping relations research one by one, obtains product each minimum indenture level unit
All possible mechanistic class, and on the basis of minimum indenture level unit and load type Unified coding, using numeral 001
～999 and letter A～Z combinations are encoded；
Step 4：Mechanism merges；Cause same mechanism for different loads type and constitute the minimum indenture level of kinematic pair
Unit carries out mechanism merging；
Step 5：Mechanism combined influence is analyzed；The mechanism combined influence analysis is to affect tight according to mechanism Frequency and mechanism
Cruel degree grade comprehensively determines；
Step 6：Life of product main frame reason determines.
2. a kind of life of product main frame according to claim 1 manages determination method, it is characterised in that：Described in step
" STRUCTURE DECOMPOSITION " including two parts content：1) product structure is divided：It is divided into initial indenture level, indenture level, minimum
Indenture level, minimum indenture level are that structure composition can not carry out analytical product component units again, and according to the structure of product
Layered rendering product structure figure；2) minimum indenture level unit each to product numeral 001～999 is unified in order compiles
Code.
3. a kind of life of product main frame according to claim 1 manages determination method, it is characterised in that：
" loading analysis " described in step 2 is including three partial contents：1) cutd open according to the given loading spectrum of main frame or task
Face, carries out product overall load analysis first, obtains all possible service load and environmental load in product life cycels
Type and its mode of action；2) combination product operation principle, according to the contact side between each minimum indenture level unit and unit
Formula and working method, while considering that the service load suffered by product entirety determines each minimum about given layer with environmental load Type Synthesis
Local load's type of sub-cell and its mode of action；3) Unified coding is carried out with letter A～Z to load type.
4. a kind of life of product main frame according to claim 1 manages determination method, it is characterised in that：
" mechanism merging " described in step 4 is including two parts content：1) load for causing same failure mechanism is entered
Row merges, i.e., various load cause a kind of failure mechanism jointly；2) the minimum indenture level unit for constituting kinematic pair is carried out
The mechanism of different minimum indenture level units merges, i.e., multiple minimum indenture level units are collectively forming a kind of failure mechanism.
5. a kind of life of product main frame according to claim 1 manages determination method, it is characterised in that：Described in step 5
" mechanism combined influence analysis is to affect severity grade comprehensively to determine according to mechanism Frequency and mechanism ", its practice is such as
Under：Mechanism Frequency is given according to the interior field data of engineering experience and similar units is qualitative；Mechanism affects severity grade
The influence degree that then may finally be occurred according to failure mechanism determines, carries out according to following table 1；Mechanism combined influence analysis according to
Mechanism combined influence matrix shown in following table 2 is carried out：
1 severity tier definition of table
2 mechanism combined influence matrix of table
6. a kind of life of product main frame according to claim 1 manages determination method, it is characterised in that：Described in step 6
" life of product main frame reason determine ", its method for determining is according to following table 2, in determining that mechanism combined influence analysis result is
Deng and its above mechanism be life of product main frame reason；
2 mechanism combined influence matrix of table
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