CN107330207A - A kind of sliding bearing flow parameter computational methods of multiple factors coupling test amendment - Google Patents
A kind of sliding bearing flow parameter computational methods of multiple factors coupling test amendment Download PDFInfo
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- CN107330207A CN107330207A CN201710544905.9A CN201710544905A CN107330207A CN 107330207 A CN107330207 A CN 107330207A CN 201710544905 A CN201710544905 A CN 201710544905A CN 107330207 A CN107330207 A CN 107330207A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
Abstract
A kind of sliding bearing flow parameter computational methods of multiple factors coupling test amendment, are related to the computational methods technical field of bearing flow parameter, and it is theoretical using orthogonal test according to multiple influence factor, determines mass data point.The calculated value that experiment acquisition data point test data is tried to achieve with primary Calculation method is analyzed, and obtains a large amount of flow parameter correction factors.Using BP neural network technology, the neutral net of sliding bearing flow parameter correction factor is built, sliding bearing flow parameter amendment database is formed.By the way that sliding bearing flow parameter primary Calculation method is combined with correction factor database, that is, obtain the sliding bearing flow parameter computational methods of multiple factors coupling test amendment.The computational methods may be accounted the sliding bearing flow parameter result of calculation of multiple factors coupling influence.
Description
Technical field：
The present invention relates to be pumped into flow parameter computational methods technical field, and in particular to a kind of multiple factors coupling test amendment
Sliding bearing flow parameter computational methods.
Background technology：
For sliding bearing flow parameter, domestic conventional computational methods are to use simple empirical equation, and input is slided
Bearing arrangement and duty parameter, and above-mentioned parameter chooses corresponding coefficient amendment in discharge coefficient curve, to sliding bearing stream
Amount parameter is calculated.In addition, also having using the relatively complicated of simultaneous solution Reynolds equation, energy equation and flow equation
Method sliding bearing flow parameter is calculated.But flow parameter that above-mentioned conventional method is tried to achieve and actual flow deviation compared with
Greatly, deviation is up to 30%~40%.Excessive demand for lubricating oil amount, causes to design using the equipment oil system of sliding bearing
Unreasonable, oil pump selection is excessive, or even can cause vibration equipment.When sliding bearing flow parameter is calculated, influence factor is more, such as
Width-diameter ratio, gap-ratio of structural parameters etc., ratio pressure, the linear velocity of duty parameter etc., during multiple factors coupling influence flow parameter,
Calculating accuracy influence on conventional flow parameter computational methods is increasingly complex.
The characteristics of due to multiple factors coupling influence flow parameter, therefore can be effectively to multiple factors currently without one kind
The computational methods of the sliding bearing flow parameter of coupling influence.
The content of the invention：
The invention aims to overcome the weak point that above-mentioned prior art is present, and provide a kind of multiple factors coupling examination
The positive sliding bearing flow parameter computational methods of running repair, amendment database is accurate.
The technical solution adopted by the present invention is：A kind of sliding bearing flow parameter of multiple factors coupling test amendment is calculated
Method, it is theoretical using orthogonal test according to width-diameter ratio, gap-ratio, than pressure, linear velocity factor, data point is determined, by score
Phase separation answers data point test data and the method for calculated value, and sliding bearing flow parameter primary Calculation method is repaiied
Just, step is as follows：
1）According to the scope of a variety of conventional sliding bearing flow parameter influence factors, i.e. width-diameter ratio, gap-ratio, than pressure, linear velocity
It is theoretical using orthogonal test Deng parameter area, it is determined that the data point of a large amount of Different structural parameters and a large amount of different duty parameters；
2）Using special sliding bearing flow measurement testing stand, to above-mentioned data point, it is tested, and obtains a large amount of sliding bearings
Flow parameter test data；
3）Theoretical, the founding mathematical models using hydrldynamic pressure lubrication, the viscous equation of simultaneous solution Reynolds equation, energy equation, temperature,
Flow equation and oil film thickness equation, obtain sliding bearing flow parameter primary Calculation method.The solution of the computational methods needs to use
Finite difference calculus solution Reynolds equation, pressure is calculated using Renolds boundary condition condition；Different differences is used for different domain
Cellular, pressure DIFFERENCE EQUATIONS uses over-relaxation iterative method, so as to solve the pressure distribution of whole domain.Energy equation
Solution equally use finite difference method, the pressure distribution that Reynolds equation is solved is brought into energy equation solves temperature point
Cloth, the viscous equation solution each point oil viscosity of temperature is updated to by temperature value, then viscosity number is substituted into Reynolds equation, solves pressure point
Cloth, so iterates untill reaching precision prescribed；The 1st step is confirmed using sliding bearing flow parameter primary Calculation method
Data point carries out theoretical calculation, obtains the calculated results corresponding with experiment
4）Each group of test data and the calculated results are contrasted, substantial amounts of flow parameter correction factor is obtained.Using BP nerves
Network technology, builds the neutral net of sliding bearing flow parameter correction factor, forms sliding bearing flow parameter amendment data
Storehouse；
5）Sliding bearing flow parameter primary Calculation method is combined with amendment database, that is, obtains multiple factors coupling test
The sliding bearing flow parameter computational methods of amendment.
Described multiple factors coupling influence amendment database is by comparative analysis corresponding data experimental tests data and reason
By calculated value, a large amount of flow parameter correction factors are obtained；BP neural network technology is used, sliding bearing flow parameter amendment system is built
Several neutral nets, multiple factors coupling influence amendment database is set up with this.
The beneficial effects of the invention are as follows：The sliding bearing flow parameter computational methods of this multiple factors coupling test amendment,
The computational methods may be accounted the sliding bearing flow parameter result of calculation of multiple factors coupling influence.
Brief description of the drawings：
Fig. 1 is sliding bearing flow parameter primary Calculation method flow diagram of the present invention；
Fig. 2 is multiple factors coupling influence amendment Database flow chart of the present invention.
Embodiment：
With reference to each figure, a kind of sliding bearing flow parameter computational methods of multiple factors coupling test amendment, according to width-diameter ratio,
Gap ratio, than pressure, linear velocity factor, it is theoretical using orthogonal test, determine data point, pass through comparative analysis corresponding data experimental tests number
According to the method with calculated value, sliding bearing flow parameter primary Calculation method is modified, step is as follows：
1）According to the scope of a variety of conventional sliding bearing flow parameter influence factors, i.e. width-diameter ratio, gap-ratio, than pressure, linear velocity
It is theoretical using orthogonal test Deng parameter area, it is determined that the data point of a large amount of Different structural parameters and a large amount of different duty parameters；
2）Using special sliding bearing flow measurement testing stand, to above-mentioned data point, it is tested, and obtains a large amount of sliding bearings
Flow parameter test data；
3）Theoretical, the founding mathematical models using hydrldynamic pressure lubrication, the viscous equation of simultaneous solution Reynolds equation, energy equation, temperature,
Flow equation and oil film thickness equation, obtain sliding bearing flow parameter primary Calculation method.The solution of the computational methods needs to use
Finite difference calculus solution Reynolds equation, pressure is calculated using Renolds boundary condition condition；Different differences is used for different domain
Cellular, pressure DIFFERENCE EQUATIONS uses over-relaxation iterative method, so as to solve the pressure distribution of whole domain.Energy equation
Solution equally use finite difference method, the pressure distribution that Reynolds equation is solved is brought into energy equation solves temperature point
Cloth, the viscous equation solution each point oil viscosity of temperature is updated to by temperature value, then viscosity number is substituted into Reynolds equation, solves pressure point
Cloth, so iterates untill reaching precision prescribed；The 1st step is confirmed using sliding bearing flow parameter primary Calculation method
Data point carries out theoretical calculation, obtains the calculated results corresponding with experiment
4）Each group of test data and the calculated results are contrasted, substantial amounts of flow parameter correction factor is obtained.Using BP nerves
Network technology, builds the neutral net of sliding bearing flow parameter correction factor, forms sliding bearing flow parameter amendment data
Storehouse；
5）Sliding bearing flow parameter primary Calculation method is combined with amendment database, that is, obtains multiple factors coupling test
The sliding bearing flow parameter computational methods of amendment.
Described multiple factors coupling influence amendment database is by comparative analysis corresponding data experimental tests data and reason
By calculated value, a large amount of flow parameter correction factors are obtained；BP neural network technology is used, sliding bearing flow parameter amendment system is built
Several neutral nets, multiple factors coupling influence amendment database is set up with this.
Reference picture 1, the calculation method need to first confirm that the basic parameter of bearing, i.e. duty parameter are structural parameters, importing pressure,
Temperature boundary condition, setting eccentricity, attitude angle initial value, simultaneous Reynolds equation, energy equation, the viscous equation of temperature, flow equation with
Oil film thickness equation.With finite difference calculus solution Reynolds equation, pressure is calculated using Renolds boundary condition condition.For different solution areas
Domain uses different difference schemes, and pressure DIFFERENCE EQUATIONS uses over-relaxation iterative method, so as to solve the pressure of whole domain
Power is distributed.The solution of energy equation equally uses finite difference method, and the pressure distribution that Reynolds equation is solved is brought into energy
Solution of equation obtains Temperature Distribution, temperature value is updated into the viscous equation solution each point oil viscosity of temperature, then viscosity number is substituted into Reynolds side
Journey, solves pressure distribution, so iterates untill reaching precision prescribed, finally tries to achieve sliding bearing flow parameter.
Reference picture 2, the foundation of the amendment database is needed according to multiple influence factor first, theoretical using orthogonal test, really
Determine mass data point.Experiment obtains data point test data and carried out with the calculated value that primary Calculation method is tried to achieve to score
Analysis, obtains a large amount of flow parameter correction factors.The BP neural network of sliding bearing flow parameter correction factor is built, is set up with this
Multiple factors coupling influence amendment data.
A large amount of different sliding bearing flow parameter influence factors are determined by using orthogonal test theory（Width-diameter ratio,
Gap ratio, than pressure, linear velocity etc.）Data point.Theoretical using hydrldynamic pressure lubrication, founding mathematical models obtain preliminary slip
Bearing flow parameter computational methods, the data point determined using this method pair carries out theoretical calculation.Comparative test result and theory
Result of calculation, the big quantity correction coefficient according to obtained by contrast, using BP neural network technology, builds sliding bearing flow parameter and repaiied
The neutral net of positive coefficient, forms sliding bearing flow parameter amendment database.By sliding bearing flow parameter primary Calculation side
Method is combined with correction factor database, that is, obtains the sliding bearing flow parameter calculating side of multiple factors coupling test amendment
Method.
In summary, the sliding bearing flow parameter that may be accounted multiple factors coupling influence by the present invention is calculated
As a result, also, this computational methods using orthogonal test theory confirm data point when should be chosen in influence factor prescribed limit use up
The many data points of amount, quantity is more, and amendment database is more accurate.When the other examples of sliding bearing flow parameter are calculated, such as shadow
Factor parameter is rung with determining that data point is not inconsistent, and will calculate corresponding correction factor using data interpolations.
Claims (2)
1. a kind of sliding bearing flow parameter computational methods of multiple factors coupling test amendment, it is characterised in that：According to wide footpath
It is theoretical using orthogonal test than, gap-ratio, than pressure and linear velocity factor, data point is determined, passes through comparative analysis respective counts strong point
The method of test data and calculated value, is modified, step is as follows to sliding bearing flow parameter primary Calculation method：
1）According to the scope of a variety of conventional sliding bearing flow parameter influence factors, i.e. width-diameter ratio, gap-ratio, than pressure, linear velocity
It is theoretical using orthogonal test Deng parameter area, it is determined that the data point of a large amount of Different structural parameters and a large amount of different duty parameters；
2）Using special sliding bearing flow measurement testing stand, to above-mentioned data point, it is tested, and obtains a large amount of sliding bearings
Flow parameter test data；
3）Theoretical, the founding mathematical models using hydrldynamic pressure lubrication, the viscous equation of simultaneous solution Reynolds equation, energy equation, temperature, stream
Equation and oil film thickness equation are measured, sliding bearing flow parameter primary Calculation method is obtained.The solution of the computational methods need to be with having
Calculus of finite differences solution Reynolds equation is limited, pressure is calculated using Renolds boundary condition condition；Different difference is used for different domain
Form, pressure DIFFERENCE EQUATIONS uses over-relaxation iterative method, so as to solve the pressure distribution of whole domain.Energy equation
Solution equally uses finite difference method, and the pressure distribution that Reynolds equation is solved is brought into energy equation solves Temperature Distribution,
Temperature value is updated to the viscous equation solution each point oil viscosity of temperature, then viscosity number is substituted into Reynolds equation, pressure distribution is solved, such as
This iterates untill reaching precision prescribed；The data confirmed using sliding bearing flow parameter primary Calculation method to the 1st step
Point carries out theoretical calculation, obtains the calculated results corresponding with experiment
4）Each group of test data and the calculated results are contrasted, substantial amounts of flow parameter correction factor is obtained.Using BP nerves
Network technology, builds the neutral net of sliding bearing flow parameter correction factor, forms sliding bearing flow parameter amendment data
Storehouse；
5）Sliding bearing flow parameter primary Calculation method is combined with amendment database, that is, obtains multiple factors coupling test
The sliding bearing flow parameter computational methods of amendment.
2. a kind of sliding bearing flow parameter computational methods of multiple factors coupling test amendment according to claim 1,
It is characterized in that：Multiple factors coupling influence amendment database is by comparative analysis corresponding data experimental tests data and theoretical meter
Calculation value, obtains a large amount of flow parameter correction factors；BP neural network technology is used, sliding bearing flow parameter correction factor is built
Neutral net, multiple factors coupling influence amendment database is set up with this.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110096784A (en) * | 2019-04-25 | 2019-08-06 | 西安交通大学 | A kind of quick calculating and design method of the bush(ing) bearing with axial pressure difference |
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| CN110096784B (en) * | 2019-04-25 | 2020-07-28 | 西安交通大学 | Rapid calculation and design method of radial sliding bearing with axial pressure difference |
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