CN107330204A - The FEM Simulation method and device of double shrouded wheel welding procedure - Google Patents
The FEM Simulation method and device of double shrouded wheel welding procedure Download PDFInfo
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- CN107330204A CN107330204A CN201710543417.6A CN201710543417A CN107330204A CN 107330204 A CN107330204 A CN 107330204A CN 201710543417 A CN201710543417 A CN 201710543417A CN 107330204 A CN107330204 A CN 107330204A
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- welding
- double shrouded
- shrouded wheel
- lead angle
- blade root
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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]
Abstract
The invention discloses a kind of FEM Simulation method and device of double shrouded wheel welding procedure, it is related to data analysis technique field, the cost of double shrouded wheel STUDY ON THE WELDING can be saved and Efficiency is improved.Methods described includes：Set up the three-dimensional entity model of double shrouded wheel；Mesh generation is carried out to the three-dimensional entity model so that grid is individually divided at the blade root lead angle that the blade of the double shrouded wheel intersects with reel or shrouding disc；According to the practical operation of welding, boundary condition, and the material properties that the corresponding material of configuration is varied with temperature are configured on the mesh of finite element after division；By performing preset language programming code program, the welding generating process at double shrouded wheel blade root lead angle described in Life-and-death element technical modelling is realized.The present invention is applied to the FEM Simulation of double shrouded wheel welding procedure.
Description
Technical field
The present invention relates to a kind of data analysis technique field, more particularly to a kind of finite element of double shrouded wheel welding procedure
Analog analysing method and device.
Background technology
Double shrouded wheel is made up of blade with forward and backward cover plate.The efficiency of double shrouded wheel is higher, and manufacture difficulty is larger, in centrifugation
Using most in pump.Suitable for conveying clear water, the less cleaning liquid without particle of viscosity such as solution.
Two pieces weldering welding procedure is one of conventional method of processing double shrouded wheel, but due to the high temperature of welding process, knot
Welding residual stress is inevitably produced in structure, therefore structure may produce stress concentration or the situation of crack defect.Mesh
Before can by way of entity Welding experiment to double shrouded wheel welding procedure carry out experimental study, ground however, can so expend
Study carefully cost, and it is less efficient.
The content of the invention
In view of this, the invention provides a kind of FEM Simulation method and device of double shrouded wheel welding procedure,
Main purpose is that the cost of double shrouded wheel STUDY ON THE WELDING can be saved and improves Efficiency.
, should according to one aspect of the invention there is provided a kind of FEM Simulation method of double shrouded wheel welding procedure
Method includes：
Set up the three-dimensional entity model of double shrouded wheel；
Mesh generation is carried out to the three-dimensional entity model so that the blade of the double shrouded wheel intersects with reel or shrouding disc
Blade root lead angle at grid individually divide；
According to the practical operation of welding, boundary condition is configured on the mesh of finite element after division, and configuration is accordingly
The material properties that material is varied with temperature；
By performing preset language programming code program, double shrouded wheel blade root lead angle described in Life-and-death element technical modelling is realized
The welding generating process at place.
According to another aspect of the invention there is provided a kind of FEM Simulation device of double shrouded wheel welding procedure,
The device includes：
Unit is set up, the three-dimensional entity model for setting up double shrouded wheel；
Division unit, for carrying out mesh generation to the three-dimensional entity model for setting up unit foundation so that described to close
Grid is individually divided at the blade root lead angle that the blade of formula impeller intersects with reel or shrouding disc；
Dispensing unit, for the practical operation according to welding, matches somebody with somebody on the mesh of finite element after division unit division
Put boundary condition, and the material properties that the corresponding material of configuration is varied with temperature；
Analogue unit, for by performing preset language programming code program, realizing and being closed described in Life-and-death element technical modelling
Welding generating process at formula impeller blade root lead angle.
According to another aspect of the present invention there is provided a kind of computer-readable recording medium, computer journey is stored thereon with
Sequence, the program realizes following steps when being executed by processor：
Set up the three-dimensional entity model of double shrouded wheel；
Mesh generation is carried out to the three-dimensional entity model so that the blade of the double shrouded wheel intersects with reel or shrouding disc
Blade root lead angle at grid individually divide；
According to the practical operation of welding, boundary condition is configured on the mesh of finite element after division, and configuration is accordingly
The material properties that material is varied with temperature；
By performing preset language programming code program, double shrouded wheel blade root lead angle described in Life-and-death element technical modelling is realized
The welding generating process at place.
According to another aspect of the present invention, there is provided a kind of entity of the FEM Simulation of double shrouded wheel welding procedure
Device, including memory, processor and storage are on a memory and the computer program that can run on a processor, the processing
Device realizes following steps when performing described program：
Set up the three-dimensional entity model of double shrouded wheel；
Mesh generation is carried out to the three-dimensional entity model so that the blade of the double shrouded wheel intersects with reel or shrouding disc
Blade root lead angle at grid individually divide；
According to the practical operation of welding, boundary condition is configured on the mesh of finite element after division, and configuration is accordingly
The material properties that material is varied with temperature；
By performing preset language programming code program, double shrouded wheel blade root lead angle described in Life-and-death element technical modelling is realized
The welding generating process at place.
A kind of FEM Simulation method of the double shrouded wheel welding procedure provided by above-mentioned technical proposal, the present invention
And device, compared with carrying out experimental study to double shrouded wheel welding procedure by way of entity Welding experiment at present, the present invention
By carrying out three-dimensional modeling to the double shrouded wheel for needing welding experiment, network division, boundary condition configuration, material are then carried out
Expect attribute configuration etc., finally realize the numerical simulation study of double shrouded wheel welding, weldering has more really been reappeared using computer
The whole process connect, the entity welding process without carrying out double shrouded wheel, so that it may which simulation calculates corresponding welding result, both passes through
Net is carried out at Ji environmental protection and efficient advantage, and the blade root lead angle intersected by the blade to double shrouded wheel with reel or shrouding disc
Lattice are individually divided, and by performing preset language programming code program, it is possible to achieve Life-and-death element technical modelling double shrouded wheel
Welding generating process at blade root lead angle.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow above and other objects of the present invention, feature and advantage can
Become apparent, below especially exemplified by the embodiment of the present invention.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 shows a kind of FEM Simulation method stream of double shrouded wheel welding procedure provided in an embodiment of the present invention
Journey schematic diagram；
Fig. 2 shows that one kind provided in an embodiment of the present invention sets up three-dimensional entity model example schematic；
Fig. 3 shows a kind of three-dimensional entity model mesh generation example schematic provided in an embodiment of the present invention；
Fig. 4 shows mesh generation example schematic at a kind of blade root lead angle provided in an embodiment of the present invention；
Fig. 5 shows a kind of configuration boundary condition example schematic provided in an embodiment of the present invention；
Fig. 6 shows a kind of blade lead angle first layer welding generation example schematic provided in an embodiment of the present invention；
Fig. 7 shows a kind of FEM Simulation device of double shrouded wheel welding procedure provided in an embodiment of the present invention
Structural representation；
Fig. 8 shows a kind of FEM Simulation device of double shrouded wheel welding procedure provided in an embodiment of the present invention
Entity structure schematic diagram.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.
The embodiments of the invention provide a kind of FEM Simulation method of double shrouded wheel welding procedure, as shown in figure 1,
This method includes：
101st, the three-dimensional entity model of double shrouded wheel is set up.
For the embodiment of the present invention executive agent can for double shrouded wheel welding procedure FEM Simulation dress
Put, the FEM Simulation of the welding procedure of double shrouded wheel can be realized by the device, specifically first to needing Welder
The double shrouded wheel of skill FEM Simulation carries out d solid modeling, and foundation obtains three-dimensional entity model, is then based on setting up
Three-dimensional entity model carry out FEM Simulation, it is specific to perform process described in step 102 to 104.
In embodiments of the present invention, the 3D solid mould of double shrouded wheel can also be set up by the three-dimensional graphics software of third party
Type, for example, Pro/E (Pro/Engineer), UG (UnigraphicsNX), SolidWorks, 3Dmax (3DStudioMax),
The three-dimensional graphics software such as AutoCAD (AutodeskComputerAidedDesign).
102nd, mesh generation is carried out to three-dimensional entity model so that the leaf that the blade of double shrouded wheel intersects with reel or shrouding disc
Grid is individually divided at root lead angle.
Mesh generation form can use tetrahedral grid and hexahedral mesh, in order to improve computational accuracy, in the present invention
In embodiment, the double shrouded wheel three-dimensional entity model progress all-hexahedral element mesh division that foundation can be completed, and in order that
It is relatively independent to obtain the grid at the blade root lead angle that blade intersects with reel or shrouding disc, i.e., mesh of finite element node connects with blade
It is continuous still to carry out independent operation again, during network is divided, the blade and reel or lid of double shrouded wheel can be caused
Grid is individually divided at the intersecting blade root lead angle of disk, subsequently arbitrarily to control the activation shape of finite elements according to welding process
State, simulates the welding generating process of blade lead angle.
In embodiments of the present invention, double shrouded wheel three-dimensional entity model can also be entered by third party's mesh generation software
Row network is divided, for example, the mesh generation software such as TrueGrid, Hypermesh, ICEM-CFD.
103rd, according to the practical operation of welding, boundary condition, and configuration phase are configured on the mesh of finite element after division
The material properties that the material answered is varied with temperature.
Boundary condition is configured on finite element grid according to the rigid condition of actual processing, impeller axle mouthful both sides are constrained, and
And because the high temperature properties of material are nonlinear, the attribute of material changes with the change of temperature in the heat analysis of transient state,
Therefore the material properties that corresponding material is varied with temperature are configured, specifically can comprising the modulus of elasticity of material, shear modulus, bend
Take stress, density, the coefficient of heat conduction, specific heat capacity and enthalpy etc..
104th, by performing preset language programming code program, Life-and-death element technical modelling double shrouded wheel blade root lead angle is realized
The welding generating process at place.
Wherein, preset language programming code program can in advance carry out writing setting according to the actual demand of user, for example,
It is programmed using default programming language and obtains program in machine code, then can realizes Life-and-death element mould by performing the program in machine code
Intend the movement of thermal source, and then simulate the welding generating process at double shrouded wheel blade root lead angle.
The FEM Simulation method of a kind of double shrouded wheel welding procedure provided in an embodiment of the present invention, with passing through at present
The mode of entity Welding experiment carries out experimental study to double shrouded wheel welding procedure and compared, and the embodiment of the present invention can utilize calculating
Machine has more really reappeared the whole process of double shrouded wheel welding, the entity welding process without carrying out double shrouded wheel, so that it may mould
Plan calculates corresponding welding result, not only economic and environment-friendly but also efficient advantage, and passes through the blade and reel to double shrouded wheel
Or carry out grid at the intersecting blade root lead angle of shrouding disc and individually divide, can be with and by performing preset language programming code program
Realize the welding generating process at Life-and-death element technical modelling double shrouded wheel blade root lead angle.
Further, as the refinement and extension of embodiments of the present invention embodiment, above-mentioned steps 104 are specific
It can include：By performing preset language programming code program, arbitrarily controlled difference at blade root lead angle limited according to welding process
Unit distinguishes corresponding state of activation and thermal source movement, realizes the welding generating process at simulation double shrouded wheel blade root lead angle.
In the embodiment of the present invention, grid is individually divided at the blade root lead angle intersected due to blade with reel or shrouding disc, mesh of finite element section
Point not only can also continuously carry out independent operation with blade, therefore be realized by performing preset language programming code program according to weldering
Termination process arbitrarily controls different finite elements at blade root lead angle to distinguish corresponding state of activation, i.e. whether finite elements are activated,
And then the movement of thermal source is simulated, so as to simulate the welding generating process at double shrouded wheel blade root lead angle.
In order to enrich the implementation of the embodiment of the present invention, can have in specific numerical simulation by third party
Finite element analysis software realizes that accordingly, above-mentioned steps 103 can specifically include：Mesh of finite element after division is imported into
In predetermined finite element analysis software；In predetermined finite element analysis software, according to the practical operation of welding, to be limited after division
Metanetwork configures the material properties that boundary condition and corresponding material are varied with temperature, and material properties can specifically include material
Modulus of elasticity, shear modulus, yield stress, density, the coefficient of heat conduction, specific heat capacity and enthalpy etc.；Accordingly, above-mentioned steps
104 can specifically include：In predetermined finite element analysis software, by performing preset language programming code program, life and death is realized
Welding generating process at monotechnics simulation double shrouded wheel blade root lead angle, and numerical simulation result is shown, specifically may be used
It is shown in the way of using finite element analysis cloud atlas.
Wherein, predetermined finite element analysis software can be ANSYS softwares, ABAQUS softwares, ADINA softwares etc., specifically may be used
So that setting to be pre-selected according to the actual requirements.
Further, in order to contrast the welding residual stress result under different operating modes, preferable technological parameter is obtained, to change
Enter technique and theoretical foundation is provided, welding process flow is welded according to the two pieces of impeller, and combine the technique in actual welding, carry out not
With the full incubation medium under operating mode, accordingly, the above method can also include：Configure the condition calculating ginseng of different operating modes
Number；According to the condition calculating parameter, numerical simulation is carried out to the overall process that double shrouded wheel is welded, the welding under different operating modes is obtained
Technological parameter.
Wherein, condition calculating parameter can include speed of welding, and/or bonding power, and/or preheating temperature, and/or weldering
Heat source temperature, and/or heat treatment temperature, and/or welding target are connect, welding target can be welding blade and shrouding disc or welding
Blade and reel.For example, it is as shown in table 1 below, it is six kinds of different working conditions：
The operating mode that table 1 is calculated
It is above-mentioned according to the condition calculating parameter, numerical simulation is carried out to the overall process that double shrouded wheel is welded, different works are obtained
The process of welding condition under condition can specifically include：According to the speed of welding, and/or bonding power of different operating modes and/
Or preheating temperature, and/or welding heat source temperature, and/or heat treatment temperature, and/or welding target, what double shrouded wheel was welded is complete
Process carries out numerical simulation, obtains the welding residual stress and distortion result of double shrouded wheel under different operating modes；It is residual according to the welding
Residue stress and deformation result, determine influence result of the welding procedure under different operating modes to the double shrouded wheel life-span, and based on the shadow
Sound result obtains the welding condition under different operating modes.
For example, by finite element modelling, contrast is in different speeds of welding, different bonding powers, different pre-treatments temperature, no
The residual stress obtained under the conditions of welding cap disk respectively and enthalpy reel and the result of deformation are welded with post-processing temperature and two pieces, by right
The evaluation of residual stress, obtains influence of the different welding procedures to impeller life, finally provides preferable welding condition, no
Only numerically modeling welding from now on provides realistic basis, and more process engineering is provided fundamental basis.
In order to better illustrate the implementation process that the embodiment of the present invention provides method, following specific application example is provided,
But not limited to this.
For example, in order to carry out FEM Simulation to double shrouded wheel welding procedure, first with SolidWorks softwares
D solid modeling is carried out to double shrouded wheel, as shown in Fig. 2 the three-dimensional entity model of double shrouded wheel is obtained, then by the three-dimensional
Physical model imports ICEM-CFD softwares and carries out full hexahedron network division, as shown in figure 3, and the so that blade of double shrouded wheel
Grid is individually divided at the blade root lead angle intersected with reel or shrouding disc, as shown in Figure 4；Then the grid after division is imported into
In ANSYS softwares, and corresponding boundary condition is configured, as shown in figure 5, and the material that varies with temperature of the corresponding material of configuration
Attribute；It is finally based on ANSYS Parametric Design Languages (ANSYS ParametricDesignLanguage, APDL) programming realization
The application of moving heat source transient analysis, Life-and-death element technology and thermosetting coupling analysis, realizes two pieces weldering impeller technique full mistake
The numerical simulation of journey, as shown in fig. 6, moving the process generated with first layer lead angle for thermal source, it is possible to complete according to the above
The welding residual stress result under the numerical simulation of overall process, contrast different parameters is welded under into different operating modes, is obtained preferably
Technological parameter, theoretical foundation is provided for modified technique.
Further, implementing as Fig. 1 methods describeds, the embodiments of the invention provide a kind of welding of double shrouded wheel
The FEM Simulation device of technique, as shown in fig. 7, described device includes：Set up unit 21, division unit 22, configuration list
Member 23, analogue unit 24.
Unit 21 is set up, can be used for the three-dimensional entity model for setting up double shrouded wheel, sets up unit 21 to build in the present apparatus
The main functional modules of vertical three-dimensional entity model.
Division unit 22, can be used for carrying out mesh generation to the three-dimensional entity model for setting up the foundation of unit 21, makes
At the blade root lead angle that intersects with reel or shrouding disc of blade of the double shrouded wheel grid individually divide, division unit 22 is this dress
Put the main functional modules of middle grid division.
Dispensing unit 23, can be used for the practical operation according to welding, the finite element net after division unit division
Boundary condition, and the material properties that the corresponding material of configuration is varied with temperature are configured on network, dispensing unit 23 is in the present apparatus
For the main functional modules of grid configuration boundary condition and material properties.
Analogue unit 24, can be used for, by performing preset language programming code program, realizing Life-and-death element technical modelling
Welding generating process at the double shrouded wheel blade root lead angle, analogue unit 24 is the core unit module in the present apparatus, can
The welding procedure of numerical simulation double shrouded wheel.
In specific application scenarios, the analogue unit, specifically for by performing preset language programming code program,
Different finite elements at the blade root lead angle are arbitrarily controlled to distinguish corresponding state of activation and thermal source movement according to welding process, it is real
Now simulate the welding generating process at the double shrouded wheel blade root lead angle.
In specific application scenarios, in order to contrast the welding residual stress result under different operating modes, preferable work is obtained
Skill parameter, theoretical foundation is provided for modified technique, and the dispensing unit 23 can be also used for configuring the condition calculating of different operating modes
Parameter.
The analogue unit 24, can be also used for according to the condition calculating parameter, and what the double shrouded wheel was welded is complete
Process carries out numerical simulation, obtains the welding condition under different operating modes.
Preferably, the condition calculating parameter comprising speed of welding, and/or bonding power, and/or preheating temperature, and/or
Welding heat source temperature, and/or heat treatment temperature, and/or welding target.
The analogue unit 24, specifically can be used for according to the speed of welding, and/or bonding power of different operating modes, and/or
Preheating temperature, and/or welding heat source temperature, and/or heat treatment temperature, and/or welding target, are welded to the double shrouded wheel
Overall process carries out numerical simulation, obtains the welding residual stress and distortion result of the double shrouded wheel under different operating modes；According to institute
Welding residual stress and distortion result is stated, influence knot of the welding procedure under different operating modes to the double shrouded wheel life-span is determined
Really, and based on the influence result welding condition under different operating modes is obtained.
In specific application scenarios, in order to enrich the implementation of the embodiment of the present invention, in specific numerical simulation mistake
It can be realized in journey by third party's finite element analysis software, accordingly, the dispensing unit 23 specifically can be used for drawing
Mesh of finite element after point is imported into predetermined finite element analysis software；In the predetermined finite element analysis software, according to weldering
The practical operation connect, the material category varied with temperature for the mesh of finite element configuration boundary condition and corresponding material after division
Property, wherein, the material properties include modulus of elasticity, shear modulus, yield stress, density, the coefficient of heat conduction, the specific heat of material
Hold and enthalpy.
The analogue unit 24, specifically can be used in the predetermined finite element analysis software, by performing default language
Programming code program is sayed, the welding generating process at double shrouded wheel blade root lead angle described in Life-and-death element technical modelling is realized, and will
Numerical simulation result is shown.
It should be noted that a kind of FEM Simulation dress of double shrouded wheel welding procedure provided in an embodiment of the present invention
Other corresponding descriptions of involved each functional unit are put, the correspondence description in Fig. 1 is may be referred to, will not be repeated here.
Based on above-mentioned method as shown in Figure 1, accordingly, the embodiment of the present invention additionally provides a kind of computer-readable storage medium
Matter, is stored thereon with computer program, and the program realizes following steps when being executed by processor：The three-dimensional for setting up double shrouded wheel is real
Body Model；Mesh generation is carried out to the three-dimensional entity model so that the blade of the double shrouded wheel intersects with reel or shrouding disc
Blade root lead angle at grid individually divide；According to the practical operation of welding, perimeter strip is configured on the mesh of finite element after division
Part, and the material properties that the corresponding material of configuration is varied with temperature；By performing preset language programming code program, life is realized
Dead monotechnics simulates the welding generating process at the double shrouded wheel blade root lead angle.
Embodiment based on above-mentioned method as shown in Figure 1 and device as shown in Figure 7, the embodiment of the present invention additionally provides one kind
The FEM Simulation device of double shrouded wheel welding procedure, as shown in figure 8, the device includes：Processor 31, memory 32,
And the computer program that can be run on memory 32 and on a processor is stored in, the processor 31 performs real during described program
Existing following steps：Set up the three-dimensional entity model of double shrouded wheel；Mesh generation is carried out to the three-dimensional entity model so that described
Grid is individually divided at the blade root lead angle that the blade of double shrouded wheel intersects with reel or shrouding disc；According to the practical operation of welding,
Boundary condition, and the material properties that the corresponding material of configuration is varied with temperature are configured on mesh of finite element after division；Pass through
Preset language programming code program is performed, the welding generation at double shrouded wheel blade root lead angle described in Life-and-death element technical modelling is realized
Process, the device also includes：Bus 33, is configured as coupling processor 31 and memory 32.
By applying technical scheme provided in an embodiment of the present invention, and at present by way of entity Welding experiment to enclosed
Impeller welding technique carries out experimental study and compared, and the embodiment of the present invention can more really reappear double shrouded wheel using computer
The whole process of welding, the entity welding process without carrying out double shrouded wheel, so that it may which simulation calculates corresponding welding result, both
Carried out at economic and environment-friendly and efficient advantage, and the blade root lead angle intersected by the blade to double shrouded wheel with reel or shrouding disc
Grid is individually divided, and by performing preset language programming code program, it is possible to achieve Life-and-death element technical modelling enclosed leaf
Take turns the welding generating process at blade root lead angle；By contrasting the welding residual stress result under different parameters, preferable work is obtained
Skill parameter, theoretical foundation is provided for modified technique, is not only that numerically modeling welding from now on provides realistic basis, more technique mistake
Journey design is provided fundamental basis.
Through the above description of the embodiments, those skilled in the art can be understood that the application can lead to
Hardware realization is crossed, the mode of necessary general hardware platform can also be added to realize by software.Understood based on such, this Shen
Technical scheme please can be embodied in the form of software product, and the software product can be stored in a non-volatile memories
Medium (can be CD-ROM, USB flash disk, mobile hard disk etc.) in, including some instructions are to cause a computer equipment (can be
Personal computer, server, or network equipment etc.) perform method described in the application each implement scene.
It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram for being preferable to carry out scene, module in accompanying drawing or
Flow is not necessarily implemented necessary to the application.
It will be appreciated by those skilled in the art that the module in device in implement scene can be described according to implement scene into
Row is distributed in the device of implement scene, can also carry out one or more dresses that respective change is disposed other than this implement scene
In putting.The module of above-mentioned implement scene can be merged into a module, can also be further split into multiple submodule.
Above-mentioned the application sequence number is for illustration only, and the quality of implement scene is not represented.
Disclosed above is only several specific implementation scenes of the application, and still, the application is not limited to this, Ren Heben
What the technical staff in field can think change should all fall into the protection domain of the application.
Claims (10)
1. a kind of FEM Simulation method of double shrouded wheel welding procedure, it is characterised in that including：
Set up the three-dimensional entity model of double shrouded wheel；
Mesh generation is carried out to the three-dimensional entity model so that the leaf that the blade of the double shrouded wheel intersects with reel or shrouding disc
Grid is individually divided at root lead angle；
According to the practical operation of welding, boundary condition is configured on the mesh of finite element after division, and configure corresponding material
The material properties varied with temperature；
By performing preset language programming code program, realize described in Life-and-death element technical modelling at double shrouded wheel blade root lead angle
Weld generating process.
2. it is according to the method described in claim 1, it is characterised in that described by performing preset language programming code program, real
Welding generating process described in existing Life-and-death element technical modelling at double shrouded wheel blade root lead angle, is specifically included：
By performing preset language programming code program, different limited lists at the blade root lead angle are arbitrarily controlled according to welding process
Member corresponding state of activation and thermal source movement respectively, realizes the welding generating process at the simulation double shrouded wheel blade root lead angle.
3. according to the method described in claim 1, it is characterised in that methods described also includes：
Configure the condition calculating parameter of different operating modes；
According to the condition calculating parameter, numerical simulation is carried out to the overall process that the double shrouded wheel is welded, different operating modes are obtained
Under welding condition.
4. method according to claim 3, it is characterised in that the condition calculating parameter includes speed of welding, and/or weldering
Connect power, and/or preheating temperature, and/or welding heat source temperature, and/or heat treatment temperature, and/or welding target, the basis
The condition calculating parameter, carries out numerical simulation to the overall process that the double shrouded wheel is welded, obtains the welding under different operating modes
Technological parameter, is specifically included：
According to the speed of welding, and/or bonding power, and/or preheating temperature, and/or welding heat source temperature of different operating modes and/
Or heat treatment temperature, and/or welding target, numerical simulation is carried out to the overall process that the double shrouded wheel is welded, different works are obtained
The welding residual stress and distortion result of the double shrouded wheel under condition；
According to the welding residual stress and distortion result, determine the welding procedure under different operating modes to the double shrouded wheel life-span
Influence result, and welding condition under different operating modes is obtained based on the influence result.
5. according to the method described in claim 1, it is characterised in that the practical operation according to welding, having after division
Boundary condition, and the material properties that the corresponding material of configuration is varied with temperature are configured on limit metanetwork, are specifically included：
Mesh of finite element after division is imported into predetermined finite element analysis software；
In the predetermined finite element analysis software, according to the practical operation of welding, side is configured for the mesh of finite element after division
The material properties that boundary's condition and corresponding material are varied with temperature, wherein, modulus of elasticity of the material properties comprising material,
Shear modulus, yield stress, density, the coefficient of heat conduction, specific heat capacity and enthalpy；
It is described by performing preset language programming code program, realize double shrouded wheel blade root lead angle described in Life-and-death element technical modelling
The welding generating process at place, is specifically included：
In the predetermined finite element analysis software, by performing preset language programming code program, Life-and-death element technology is realized
The welding generating process at the double shrouded wheel blade root lead angle is simulated, and numerical simulation result is shown.
6. a kind of FEM Simulation device of double shrouded wheel welding procedure, it is characterised in that including：
Unit is set up, the three-dimensional entity model for setting up double shrouded wheel；
Division unit, for carrying out mesh generation to the three-dimensional entity model for setting up unit foundation so that the enclosed leaf
Grid is individually divided at the blade root lead angle that the blade of wheel intersects with reel or shrouding disc；
Dispensing unit, for the practical operation according to welding, side is configured on the mesh of finite element after division unit division
Boundary's condition, and the material properties that the corresponding material of configuration is varied with temperature；
Analogue unit, for by performing preset language programming code program, realizing enclosed leaf described in Life-and-death element technical modelling
Take turns the welding generating process at blade root lead angle.
7. device according to claim 6, it is characterised in that
The analogue unit, specifically for by performing preset language programming code program, institute is arbitrarily controlled according to welding process
State different finite elements at blade root lead angle and distinguish corresponding state of activation and thermal source movement, realize the simulation double shrouded wheel blade root
Welding generating process at lead angle.
8. device according to claim 6, it is characterised in that
The dispensing unit, is additionally operable to configure the condition calculating parameter of different operating modes；
The analogue unit, is additionally operable to according to the condition calculating parameter, and line number is entered to the overall process that the double shrouded wheel is welded
Value simulation, obtains the welding condition under different operating modes.
9. a kind of computer-readable recording medium, is stored thereon with computer program, it is characterised in that the program is held by processor
Following steps are realized during row：
Set up the three-dimensional entity model of double shrouded wheel；
Mesh generation is carried out to the three-dimensional entity model so that the leaf that the blade of the double shrouded wheel intersects with reel or shrouding disc
Grid is individually divided at root lead angle；
According to the practical operation of welding, boundary condition is configured on the mesh of finite element after division, and configure corresponding material
The material properties varied with temperature；
By performing preset language programming code program, realize described in Life-and-death element technical modelling at double shrouded wheel blade root lead angle
Weld generating process.
10. a kind of FEM Simulation device of double shrouded wheel welding procedure, including memory, processor and it is stored in storage
On device and the computer program that can run on a processor, it is characterised in that realized during the computing device described program with
Lower step：
Set up the three-dimensional entity model of double shrouded wheel；
Mesh generation is carried out to the three-dimensional entity model so that the leaf that the blade of the double shrouded wheel intersects with reel or shrouding disc
Grid is individually divided at root lead angle；
According to the practical operation of welding, boundary condition is configured on the mesh of finite element after division, and configure corresponding material
The material properties varied with temperature；
By performing preset language programming code program, realize described in Life-and-death element technical modelling at double shrouded wheel blade root lead angle
Weld generating process.
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