CN109543333A - The welding residual stress of nuclear power engineering six angle pipes and the prediction technique of deformation - Google Patents
The welding residual stress of nuclear power engineering six angle pipes and the prediction technique of deformation Download PDFInfo
- Publication number
- CN109543333A CN109543333A CN201811461901.5A CN201811461901A CN109543333A CN 109543333 A CN109543333 A CN 109543333A CN 201811461901 A CN201811461901 A CN 201811461901A CN 109543333 A CN109543333 A CN 109543333A
- Authority
- CN
- China
- Prior art keywords
- angle pipes
- welding
- deformation
- residual stress
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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]
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/06—Power analysis or power optimisation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/08—Thermal analysis or thermal optimisation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Geometry (AREA)
- General Physics & Mathematics (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
The invention belongs to nuclear engineering fields, the prediction technique of welding residual stress and deformation more particularly to a kind of nuclear power engineering six angle pipes, this method specific steps include, 1. establishing the geometrical model of six angle pipes, 2. establishing six angle pipes welding transient heat conduction model using finite element software, 3. the coordinate origin of global coordinate system is transformed to each arc section central coordinate of circle in the way of coordinate transform, six angle pipes moving heat source subprogram is write；4. solving field of welding temperature history using the subprogram write in step 2 based on the relevant thermo-physical performance parameters of six angle pipes material temperature；5. constructing six angle pipes statical model using finite element software, 6. using the field of welding temperature history that emulation solution obtains in step 4 as thermal force, thermodynamic property parametric solution welding residual stress and residual deformation based on hexagonal tube material.Welded residual stress field/residual deformation of complex section shape in this nuclear engineering of six angle pipes can effectively be predicted through the above steps.
Description
Technical field
The invention belongs to nuclear engineering fields, welding residual stress and change more particularly to a kind of nuclear power engineering six angle pipes
The prediction technique of shape.
Technical background
Nuclear fuel rod is made of the part such as fuel pellet, six angle pipes, upper end plug, lower end plug, holddown spring.The system of fuel rod
It makes and generallys use pellet filling method: first welding lower end plug and six angle pipes, pellet, bullet Huang etc. are then packed into six angle pipes, then
Pressure people's upper end plug is welded.Six angle pipes need to face the different military services such as high temperature, high pressure, strong neutron irradiation, boron aqueous corrosion
The baptism of environment.Therefore other than the material property to six angle pipes itself requires height, the connection of six angle pipes and upper and lower end plug
It is required that it is fine and close and strong, reach the even higher standard of industrial required solidness.The welding of upper and lower end plug and six angle pipes
It is generally completed on six angle pipes special welding device, generally uses TIG from fusion welds technique.Welding workstation is passed by workpiece
It send, clamps, overturn system, the composition such as lifting system, double-torch head.Welding gun rotation, workpiece are fixed when welding.As described above,
Six angle pipes welding structure needs are on active service under the environment such as high temperature, high temperature and corrosion.Therefore institute under different welding conditions
The welding residual stress attribute of generation and welding residual deformation have the service reliability of six angle pipes bigger influence.
Welding residual stress is likely to result in the stress corrosion effect of six angle pipes, and welding residual deformation may will affect the dress of fuel bundle
With precision, to reduce the service reliability of six angle pipes.To round tube/plate welding remnants of circular cross-section or straight path
Stress field carries out analogue simulation, and writing for welding moving heat source subprogram is relatively simple, and in the welding structure of six angle pipes, weldering
The motion track for connecing heat source is straight line and the alternate closed loop route of circular arc, and track is complex, it is difficult to directly be imitated
True simulation.
Summary of the invention
The present invention problem big for the analogue simulation difficulty of the residual stresses and deformations of six angle pipes complex section, provides
A kind of welding residual stress of nuclear power engineering six angle pipes and the prediction technique of deformation.Specific technical solution is as follows:
A kind of welding residual stress of nuclear power engineering six angle pipes and the prediction technique of deformation, include the following steps:
Step 1: the geometrical model of six angle pipes is established；
Step 2: six angle pipes welding transient heat conduction model is established using finite element software；
Step 3: the coordinate origin of global coordinate system is transformed into each arc section center of circle in the way of coordinate transform
Coordinate, and write six angle pipes moving heat source subprogram；
Step 4: the subprogram write in step 2 is utilized based on the relevant thermo-physical performance parameters of six angle pipes material temperature
Solve field of welding temperature history；
Step 5: six angle pipes statical model is constructed using finite element software；
Step 6: emulation in step 4 is solved to obtained field of welding temperature history as thermal force, is based on hexagonal tubing
The thermodynamic property parametric solution welding residual stress and residual deformation of material；
Further, the transient heat conduction model of the welding process in the step 2 are as follows:
In above-mentioned formula, ρ, c are respectively density and specific heat capacity, and T is transient temperature, and t is current time, and x, y, z is with reference to seat
Mark system,For spatial gradient operator,For hot-fluid vector,For the internal rate of heat production.
Further, the statical model in the step 5 is the principle based on sequence thermal coupling, by transient heat conduction
Analysis is changed to statics Analysis, and cell type is revised as static type by the type of transient heat conduction.
Further, the step 6 includes carrying out welded plastoelasticity point for temperature field as thermal force
Analysis, the total strain rate analyzed by plastoelasticity, told total strain rate includes following three parts:
In formula,For elastic strain rate,For thermal strain rate,For plastic strain rate.
Further, the elastic strain is obtained by the relevant elasticity modulus of temperature and Poisson's ratio；The thermal strain is logical
The relevant thermal expansion coefficient of excess temperature is solved；The plastic strain is then according to the von with kinematic hardening feature
The solution of Mises yield surface is calculated.
Beneficial effect
1. realizing and handing over 12 sections (6 sections of Different Slope straight lines, 6 sections of circular arcs) the present invention is based on the theory of sequence thermal coupling
It, can be to multiple in this nuclear engineering of the six angle pipes of nuclear leve fuel bundle assembly for writing for transformation Antiinterference moving heat source subprogram
Welded residual stress field/residual deformation of miscellaneous cross sectional shape is effectively predicted.
2. the present invention can be before the six angle pipes to different geometrical models weld, to different welding conditions
Obtained field of welding temperature and history, Residual stresses and welding residual deformation carry out preliminary assessment, can be effective
Ground instructs the selection of welding condition and improves six angle pipes welding service reliability and robustness, reduces the use of six angle pipes
Cost.
Detailed description of the invention
Fig. 1 is six angle pipes cross section geometric information in specific embodiment；
Fig. 2 is six angle pipes finite element model in specific embodiment；
Fig. 3 is the moving heat source model of double ellipsoids in specific embodiment；
Fig. 4 is hexagonal tube section moving heat source motion track in specific embodiment；
Fig. 5 is the welded boundary condition of six angle pipes in specific embodiment；
Fig. 6 is the variation course of weld seam node heat flow density in specific embodiment；
Fig. 7 is the variation course of weld seam node source center temperature in specific embodiment；
One of six angle pipes transient state temperature field when Fig. 8 is double ellipsoid moving heat source movements in specific embodiment；
The two of six angle pipes transient state temperature field when Fig. 9 is double ellipsoid moving heat source movements in specific embodiment；
Figure 10 is six angle pipes Residual stresses in specific embodiment；
Figure 11 is the local feature of six angle pipes Residual stresses in specific embodiment；
Figure 12 is that six angle pipes weld afterflow in specific embodiment.
Specific embodiment
By an example, invention is further described in detail with reference to the accompanying drawing.
Since nuclear leve fuel bundle is generally long, the outer tube for undertaking stationary fuel cluster effect also compares accordingly
It is long, the mixed oxide fuel six angle pipes geometrical model that entire length is 2800mm is established, the specific size of cross sectional shape is such as
Shown in Fig. 1.The regular hexagonal section outer layer side length be 110mm, internal layer side length 106.5mm, the outer tube with a thickness of 3mm, and
While while between exist a R4.5 rounded corner.
Establish the finite element model of the welded transient heat conduction of six angle pipes as shown in Figure 2, transient heat conduction model
Are as follows:
In above-mentioned formula, ρ, c are respectively density and specific heat capacity, and T is transient temperature, and t is current time, and x, y, z is with reference to seat
Mark system,For spatial gradient operator,For hot-fluid vector,For the internal rate of heat production.And follow Fourier rule
Non-linear isotropic equation of heat conduction is defined as follows:
In formula, k is the relevant material thermal conductivity of temperature.
Currently, applying up to double ellipsoidal models in engineering, which can reflected well for welding moving heat source
The Gradient Effect of temperature before and after moving heat source.The front and back heat flux distribution of double ellipsoid moving heat sources can be retouched by following equation
It states:
In formula, x ', y ', it is the local coordinate system of welded double stripping mechanism with z '；ffWith frBefore respectively indicating
Heat ratio shared by ellipsoid part afterwards；QwThe effective power for representing welding heat source is imitated with welding current, welding arc voltage and electric arc
The parameters such as rate are related.af, ar, b is the geometric parameter of double ellipsoids relevant with moving heat source to c.
Unit near upper and lower weld seam is refined, to simulate the stress concentration effect of weld dimensions.Six angle pipes
Material is 316Ti stainless steel, and this material has relatively broad application in nuclear industry, and material main component is as shown in table 1.
Material thermo-physical performance parameters relevant to temperature and mechanical property parameters are as shown in table 2.
1 316Ti stainless steel material main component of table
The relevant thermo-physical performance parameters of 2 316Ti stainless steel material temperature of table and thermodynamic property parameter
When writing of moving heat source subprogram is being carried out to welding track shown in Fig. 4, arc section is transitioned by straightway
When, the coordinate origin (x, y) of global coordinate system is transformed into each arc section central coordinate of circle (x first with coordinate transformi,yi),
Wherein, i=1,2 ... ... 6.Further welding moving heat source subprogram is carried out to every segment circular arc under local coordinate system to carry out
It writes, to realize the definition of straight line-circular arc checker welding track moving heat source.
According to welding handbook and the welding procedure of arc welding, initial option welding condition are as follows: voltage 20V；Electric current
110A；Speed of welding 90mm/min.The welding sub- journey of moving heat source is write by Abaqus Finite Element Simulation Software and Fortran
Sequence carries out the solution of field of welding temperature and its history using finite element model as shown in Figure 5 and the subprogram write.Temperature
The result for spending field can be by the change histories of the heat flow density for 14 nodes being located on weld seam and the change of temperature field history
Change is observed.Heat flow density, the temperature history difference of these nodes are as shown in Figure 6,7.And Fig. 8,9 be moving heat source
The distribution of the transient state temperature field of weld seam when mobile, by Fig. 8 and Fig. 9 it is found that under selected welding condition, in moving heat source
The maximum temperature of the heart is stably maintained near 3800 DEG C.
As described above, after the temperature field history for obtaining the six angle pipes welding process, still using as shown in Figure 5 limited
The solution of meta-model progress welding residual stress and residual deformation.Principle based on sequence thermal coupling, it is only necessary to by analysis type
Statics Analysis is changed to by transient heat conduction analysis, cell type is revised as static class by the type of transient heat conduction
Type, while using the field of welding temperature history obtained before as thermal force, the emulation for carrying out residual stress and residual deformation solves.
Based on the relevant thermodynamic property parameter of 316Ti stainless steel temperature as shown in Table 2 (yield strength, Young's modulus, Poisson's ratio)
And thermal expansion coefficient, carry out the analogue simulation of welding residual stress and residual deformation.It emulates residual near obtained weld seam
As shown in Figure 10,11, residual plastic strain is as shown in figure 12 for residue stress field.
In conjunction with the geometry information of six angle pipes, the result of Figure 10-12 is analyzed it is found that being somebody's turn to do the result is that reasonable.
Six angle pipes axial length reaches 2.8m, and when welding is fixed by being buckled at end plug up and down for welding machine, other positions have no
Constraint, when being welded, axially more can freely be expanded with heat and contract with cold deformation, i.e., be not sufficient in axial constraint (restraint) degree
Remaining plastic deformation is axially being generated, therefore the welding structure can't generate very big residual stress and residual deformation.
Claims (5)
1. a kind of welding residual stress of nuclear power engineering six angle pipes and the prediction technique of deformation, which is characterized in that including as follows
Step:
Step 1: the geometrical model of six angle pipes is established；
Step 2: six angle pipes welding transient heat conduction model is established using finite element software；
Step 3: the coordinate origin of global coordinate system is transformed into each arc section center of circle in the way of coordinate transform and is sat
Mark, and write six angle pipes moving heat source subprogram；
Step 4: it is solved based on the relevant thermo-physical performance parameters of six angle pipes material temperature using the subprogram write in step 2
Field of welding temperature history；
Step 5: six angle pipes statical model is constructed using finite element software；
Step 6: emulation in step 4 is solved into obtained field of welding temperature history as thermal force, based on hexagonal tube material
Thermodynamic property parametric solution welding residual stress and residual deformation.
2. a kind of welding residual stress of nuclear power engineering six angle pipes according to claim 1 and the prediction technique of deformation,
It is characterized in that, the transient heat conduction model of the welding process in the step 2 are as follows:
In above-mentioned formula, ρ, c are respectively density and specific heat capacity, and T is transient temperature, and t is current time, and x, y, z is reference frame,For spatial gradient operator,For hot-fluid vector,For the internal rate of heat production.
3. a kind of welding residual stress of nuclear power engineering six angle pipes according to claim 1 and the prediction technique of deformation,
It is characterized in that, the statical model in the step 5 is the principle based on sequence thermal coupling, transient heat conduction analysis is changed
For statics Analysis, cell type is revised as static type by the type of transient heat conduction.
4. a kind of welding residual stress of nuclear power engineering six angle pipes according to claim 1 and the prediction technique of deformation,
It is characterized in that, the step 6 includes carrying out welded plastoelasticity analysis for temperature field as thermal force, pass through
The total strain rate that plastoelasticity is analyzed, told total strain rate include following three parts:In formula,For elastic strain rate,For thermal strain rate,For plastic strain rate.
5. a kind of welding residual stress of nuclear power engineering six angle pipes according to claim 4 and the prediction technique of deformation,
It is characterized in that, the elastic strain is obtained by the relevant elasticity modulus of temperature and Poisson's ratio；The thermal strain passes through temperature
Relevant thermal expansion coefficient is solved；The plastic strain is surrendered according to the von Mises with kinematic hardening feature
Face solves and is calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811461901.5A CN109543333B (en) | 2018-12-02 | 2018-12-02 | Method for predicting welding residual stress and deformation of hexagonal tube for nuclear power engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811461901.5A CN109543333B (en) | 2018-12-02 | 2018-12-02 | Method for predicting welding residual stress and deformation of hexagonal tube for nuclear power engineering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109543333A true CN109543333A (en) | 2019-03-29 |
| CN109543333B CN109543333B (en) | 2022-02-22 |
Family
ID=65852518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811461901.5A Active CN109543333B (en) | 2018-12-02 | 2018-12-02 | Method for predicting welding residual stress and deformation of hexagonal tube for nuclear power engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109543333B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110717291A (en) * | 2019-09-26 | 2020-01-21 | 华中科技大学 | Welding structure deformation simulation method, device, equipment and storage medium |
| CN111597659A (en) * | 2020-05-25 | 2020-08-28 | 中国工程物理研究院总体工程研究所 | Finite element evaluation method for strength of disc spring |
| CN112646965A (en) * | 2020-11-13 | 2021-04-13 | 中国原子能科学研究院 | Manufacturing method for controlling deformation of ferrite/martensite steel hexagonal pipe |
| CN110688798B (en) * | 2019-09-26 | 2021-06-01 | 华中科技大学 | Deformation prediction method, device, equipment and storage medium for shell structural part |
| CN113378442A (en) * | 2021-06-30 | 2021-09-10 | 湖南大学 | Characterization method of residual stress of aluminum alloy forging |
| WO2023155385A1 (en) * | 2022-02-17 | 2023-08-24 | 深圳中广核工程设计有限公司 | Mechanical analysis processing method and apparatus for nuclear power plant support member, device, and medium |
| CN117236139A (en) * | 2023-11-09 | 2023-12-15 | 华电重工机械有限公司 | Wind power tower welding residual stress prediction method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101595069A (en) * | 2006-09-20 | 2009-12-02 | 康宁股份有限公司 | The temperature compensation of the glass baseplate plane stress that shape is caused |
| US20110213594A1 (en) * | 2010-02-03 | 2011-09-01 | Hitachi, Ltd. | Method for simulation of welding distortion |
| CN103323471A (en) * | 2013-05-14 | 2013-09-25 | 青岛理工大学 | Quantitative prediction method of retained austenite transformation in incremental forming process of TRIP steel plate material |
| CN103331512A (en) * | 2013-06-24 | 2013-10-02 | 北京星航机电装备有限公司 | Electron beam welding method of special-shaped surface |
| WO2016173313A1 (en) * | 2015-04-27 | 2016-11-03 | 江苏金通灵流体机械科技股份有限公司 | Ansys-based duplex stainless steel and dissimilar steel welding deformation prediction method |
| CN106951622A (en) * | 2017-03-14 | 2017-07-14 | 北京科瑞华安科技有限公司 | A kind of spent fuel stores the finite element method of screen work seismic safety |
| CN107993728A (en) * | 2017-12-29 | 2018-05-04 | 安徽中科超安科技有限公司 | The manufacture method of nuclear power treasured fuel assembly and solid fuel piece |
-
2018
- 2018-12-02 CN CN201811461901.5A patent/CN109543333B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101595069A (en) * | 2006-09-20 | 2009-12-02 | 康宁股份有限公司 | The temperature compensation of the glass baseplate plane stress that shape is caused |
| US20110213594A1 (en) * | 2010-02-03 | 2011-09-01 | Hitachi, Ltd. | Method for simulation of welding distortion |
| CN103323471A (en) * | 2013-05-14 | 2013-09-25 | 青岛理工大学 | Quantitative prediction method of retained austenite transformation in incremental forming process of TRIP steel plate material |
| CN103331512A (en) * | 2013-06-24 | 2013-10-02 | 北京星航机电装备有限公司 | Electron beam welding method of special-shaped surface |
| WO2016173313A1 (en) * | 2015-04-27 | 2016-11-03 | 江苏金通灵流体机械科技股份有限公司 | Ansys-based duplex stainless steel and dissimilar steel welding deformation prediction method |
| CN106951622A (en) * | 2017-03-14 | 2017-07-14 | 北京科瑞华安科技有限公司 | A kind of spent fuel stores the finite element method of screen work seismic safety |
| CN107993728A (en) * | 2017-12-29 | 2018-05-04 | 安徽中科超安科技有限公司 | The manufacture method of nuclear power treasured fuel assembly and solid fuel piece |
Non-Patent Citations (2)
| Title |
|---|
| 丁玉佩等: "《中国电力百科全书 核能及新能源发电卷》", 31 March 2001 * |
| 刘志成: "不同载荷模式下焊接结构疲劳寿命评估方法的研究", 《中国优秀博硕士学位论文全文数据库(博士)工程科技Ⅰ辑》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110717291A (en) * | 2019-09-26 | 2020-01-21 | 华中科技大学 | Welding structure deformation simulation method, device, equipment and storage medium |
| CN110717291B (en) * | 2019-09-26 | 2021-05-04 | 华中科技大学 | Welding structure deformation simulation method, device, equipment and storage medium |
| CN110688798B (en) * | 2019-09-26 | 2021-06-01 | 华中科技大学 | Deformation prediction method, device, equipment and storage medium for shell structural part |
| CN111597659A (en) * | 2020-05-25 | 2020-08-28 | 中国工程物理研究院总体工程研究所 | Finite element evaluation method for strength of disc spring |
| CN111597659B (en) * | 2020-05-25 | 2022-05-03 | 中国工程物理研究院总体工程研究所 | Finite element evaluation method for strength of disc spring |
| CN112646965A (en) * | 2020-11-13 | 2021-04-13 | 中国原子能科学研究院 | Manufacturing method for controlling deformation of ferrite/martensite steel hexagonal pipe |
| CN113378442A (en) * | 2021-06-30 | 2021-09-10 | 湖南大学 | Characterization method of residual stress of aluminum alloy forging |
| CN113378442B (en) * | 2021-06-30 | 2022-05-10 | 湖南大学 | Characterization method of residual stress of aluminum alloy forging |
| WO2023155385A1 (en) * | 2022-02-17 | 2023-08-24 | 深圳中广核工程设计有限公司 | Mechanical analysis processing method and apparatus for nuclear power plant support member, device, and medium |
| CN117236139A (en) * | 2023-11-09 | 2023-12-15 | 华电重工机械有限公司 | Wind power tower welding residual stress prediction method |
| CN117236139B (en) * | 2023-11-09 | 2024-02-27 | 华电重工机械有限公司 | Wind power tower welding residual stress prediction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109543333B (en) | 2022-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109543333A (en) | The welding residual stress of nuclear power engineering six angle pipes and the prediction technique of deformation | |
| Seleš et al. | Numerical simulation of a welding process using a prescribed temperature approach | |
| Elcoate et al. | Three dimensional multi-pass repair weld simulations | |
| Adak et al. | Effects of different restraints on the weld-induced residual deformations and stresses in a steel plate | |
| Shen et al. | Welding simulation of fillet-welded joint using shell elements with section integration | |
| Deshpande et al. | Combined butt joint welding and post weld heat treatment simulation using SYSWELD and ABAQUS | |
| Wang et al. | Prediction and measurement of welding distortion of a spherical structure assembled from multi thin plates | |
| CN103246774B (en) | The method of numerical simulation P92 steel-pipe welding heat-affected zone width | |
| CN102152016A (en) | Method for simulation of welding distortion | |
| Hwang et al. | Finite element analysis of residual stress distribution in a thick plate joined using two-pole tandem electro-gas welding | |
| Darmadi et al. | Analytic and finite element solutions for temperature profiles in welding using varied heat source models | |
| CN108334663A (en) | A kind of hollow stabilizer rod of automobile multi-pass welding technique towards accurate Deformation control | |
| Xia et al. | Numerical study of welding simulation and residual stress on butt welding of dissimilar thickness of austenitic stainless steel | |
| Akella et al. | A welding simulation of dissimilar materials SS304 and copper | |
| Liang et al. | Estimating inherent deformation in thin-plate Al-alloy joint by means of inverse analysis with the help of cutting technique | |
| Hu et al. | Influence of lumping passes on calculation accuracy and efficiency of welding residual stress of thick-plate butt joint in boiling water reactor | |
| Lee et al. | 3D residual stress modelling of welded high strength steel plate-to-plate joints | |
| Zhang et al. | Effect of welding sequences on the welding stress and distortion in the CFETR vacuum vessel assembly using finite element simulation | |
| Chen et al. | Thermo-mechanical analysis of the repair welding residual stress of AISI 316L pipeline for ECA | |
| Lee et al. | Influence of the residual stresses and distortions on the structural behavior of girth-welded cylindrical steel members | |
| Rong et al. | Numerical analysis of welding deformation and residual stress in marine propeller nozzle with hybrid laser-arc girth welds | |
| CN113486471A (en) | Numerical simulation analysis method for sealing characteristic of spring metal C-shaped ring | |
| Seong et al. | Systematization of heat straightening process of stiffened plate by surface flattening | |
| Chen et al. | Numerical analysis of the effects of weld parameters on distortions and residual stresses in butt welded steel plates | |
| Lee et al. | Numerical investigation on the behavior of circumferentially butt-welded steel circular hollow section flexural members |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |