CN103177149A - Steel structure welding deformation analytical method - Google Patents
Steel structure welding deformation analytical method Download PDFInfo
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- CN103177149A CN103177149A CN2012104195813A CN201210419581A CN103177149A CN 103177149 A CN103177149 A CN 103177149A CN 2012104195813 A CN2012104195813 A CN 2012104195813A CN 201210419581 A CN201210419581 A CN 201210419581A CN 103177149 A CN103177149 A CN 103177149A
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Abstract
The invention relates to a steel structure welding deformation analytical method. The method comprises the steps of a, establishing a computer welded joint model, and enabling the joints with five standards of a flat V-type butt joint, a flat X-type butt joint, a T-joint V-type groove, a T-joint X-type groove and a fillet joint V-type groove to be simplified to be in two forms of a plate butt joint and a T-joint; b, collecting field data; c, carrying out analogue simulation on a finite element of computer thermal mechanical coupling; d, comparing data, and conducting comparison inspection to data obtained through experiments and three-dimensional model analytical data; and e, formulating welding process, and calculating welding residual deformation and stress of the joints by inputting welding parameters such as the welding method, the groove parameter, welding currents, welding voltages and welding speed. By means of the steel structure welding deformation analytical method, welding production processes are simple and direct, subsequent processing and trimming procedures are reduced, working time cost and fuel cost are lowered, production efficiency is improved, and the quality of the welding joints is also greatly improved.
Description
Technical field
The present invention relates to a kind of welding method, specifically, relate to a kind of Welding Deformation of Steel Structure analytical approach.
Background technology
In welding process, due to the existence of welding effect, inevitably can produce welding residual stress and distortion.In actual production at present, people only by virtue of experience or by experiment obtain reliable and economic welded structure, not only will spend a large amount of time and funds, and the failure of any trial, all will cause great economic loss, and make simultaneously product quality have contingency.Due to the existence of remaining welding deformation and stress, make the reparing process workload of postwelding very large in process of production, serious waste a large amount of fuel costs, welding quality also leaves certain hidden danger.
Summary of the invention
For above-mentioned deficiency of the prior art, the invention provides a kind of minimizing welding residual stress and welding deformation, improve the Welding Deformation of Steel Structure analytical approach of welding quality.
The technical solution used in the present invention is:
A kind of Welding Deformation of Steel Structure analytical approach comprises the steps:
A, set up computing machine welding joint model, the joint of dull and stereotyped V-type open joint, dull and stereotyped X-type open joint, T connector double V-groove, T connector X-type groove, 5 kinds of standards of corner joint double V-groove is simplified to plate open joint and two kinds of forms of T connector;
B, on-site data gathering;
C, the simulation of computing machine Thermal-mechanical Coupling finite element simulation;
D, Data Comparison, the data of the data that obtain by experiment and three-dimensional model analysis compare inspection;
E, formulation welding technology; By welding parameters such as input welding method, groove parameter, welding current, weldingvoltage, speeds of welding, calculate welding residual deformation and the stress of joint.
The foundation of described computing machine welding joint model according to parameter is: root face, groove gap, groove depth, groove angle and steel plate thickness.
Described data acquisition comprises the welding parameter collection; The deformation parameter collection of test specimen, field of welding temperature change collection.
The sampling instrument of described welding parameter is: reometer, voltage table, speed of welding meter.
The deformation parameter of described test specimen comes survey record by dial gauge and steel ruler; The data 8 channel data acquisition modules in described temperature field coordinate temperature sensor to measure, and carry out real-time survey record by computing machine.
Described computing machine Thermal-mechanical Coupling finite element simulation simulation steps is:
A, utilize finite element analysis software MSC/MARC respectively two types of joints to be carried out three-dimensional modeling;
B, input analogue unit type, material property parameter; According to geometrical property and working condition division unit grid;
C, utilize software to carry out that thermal source loads and conditions setting; Simulate welding according to welding process requirement in computing machine, then calculate by software and find the solution;
D, obtain the scatter chart of real-time welding stress, strain cloud atlas and Residual stresses and strains by the Thermal-mechanical Coupling simulation analysis.
The data of the data that described experiment obtains and three-dimensional model analysis compare inspection: the data fit explanation finite element model that experimental data and three-dimensional model are analyzed is set up suitably; The data of experimental data and three-dimensional model analysis are not inconsistent, and finite element model are revised, rebulid the finite element analysis model of all kinds of joints.
Described welding method is CO2 shielded welding and two kinds of welding methods of Lincoln weld.
The beneficial effect of the relative prior art of the present invention:
A kind of Welding Deformation of Steel Structure analytical approach of the present invention, make the welding engineer can carry out according to process conditions the analysis of welding residual stress and welding deformation before production, thereby make more rationally effective welding technology, so that the welding production run is simpler and more direct, reduce the subsequent treatment finishing process, reduce time cost and fuel cost, improved production efficiency, greatly improved the quality of welding joint.
Description of drawings
Fig. 1 is welding process thermo-mechanical coupled finite element simulation emulation technology process flow diagram of the present invention;
Fig. 2 is that the present invention welds experimental data collecting flowchart figure;
Fig. 3 is plate open joint welding joint form figure of the present invention;
Fig. 4 is T connector welding joint form figure of the present invention.
Critical piece symbol description in accompanying drawing:
In figure:
11,12, groove angle α 1 21,22, groove angle α 2
31,32, groove angle β 1 41,42, groove angle β 2
51,52, groove depth H 1 61,62, groove depth H 2
71,72, groove gap b 81,82, root face p
91, steel plate thickness t 92, steel plate thickness t1
93, steel plate thickness t2.
Embodiment
The present invention will be described in detail referring to drawings and Examples:
Accompanying drawing 2 as can be known, a kind of Welding Deformation of Steel Structure analytical approach of the present invention comprises the steps:
A, set up computing machine welding joint model, the joint of dull and stereotyped V-type open joint, dull and stereotyped X-type open joint, T connector double V-groove, T connector X-type groove, 5 kinds of standards of corner joint double V-groove is simplified to plate open joint and two kinds of forms of T connector;
B, on-site data gathering;
C, the simulation of computing machine Thermal-mechanical Coupling finite element simulation;
D, Data Comparison, the data of the data that obtain by experiment and three-dimensional model analysis compare inspection;
E, formulation welding technology; By welding parameters such as input welding method, groove parameter, welding current, weldingvoltage, speeds of welding, calculate welding residual deformation and the stress of joint.
The foundation of described computing machine welding joint model according to parameter is: root face, groove gap, groove depth, groove angle and steel plate thickness.
Described data acquisition comprises the welding parameter collection; The deformation parameter collection of test specimen, field of welding temperature change collection.
The sampling instrument of described welding parameter is: reometer, voltage table, speed of welding meter.
The deformation parameter of described test specimen comes survey record by dial gauge and steel ruler; The data 8 channel data acquisition modules in described temperature field coordinate temperature sensor to measure, and carry out real-time survey record by computing machine.
Described computing machine Thermal-mechanical Coupling finite element simulation simulation steps is:
A, utilize finite element analysis software MSC/MARC respectively two types of joints to be carried out three-dimensional modeling;
B, input analogue unit type, material property parameter; According to geometrical property and working condition division unit grid;
C, utilize software to carry out that thermal source loads and conditions setting; Simulate welding according to welding process requirement in computing machine, then calculate by software and find the solution;
D, obtain the scatter chart of real-time welding stress, strain cloud atlas and Residual stresses and strains by the Thermal-mechanical Coupling simulation analysis.
The data of the data that described experiment obtains and three-dimensional model analysis compare inspection: the data fit explanation finite element model that experimental data and three-dimensional model are analyzed is set up suitably; The data of experimental data and three-dimensional model analysis are not inconsistent, and finite element model are revised, rebulid the finite element analysis model of all kinds of joints.
Described welding method is CO2 shielded welding and two kinds of welding methods of Lincoln weld.
Concrete steps of the present invention are as follows:
Computer model is simplified.In order to increase the versatility of program, for five kinds of welding joint forms commonly used (dull and stereotyped V-type open joint, dull and stereotyped X-type open joint, T connector double V-groove, T connector X-type groove, corner joint double V-groove), its model simplification is become plate open joint and two kinds of forms of T connector, can develop the joint form of 5 kinds of standards of formation by the variation of parameter root face p, groove gap b, groove depth H, groove angle α and β.Can determine concrete bevel for welding form by inputting these parameters like this when computer operation.
Plant experiment is data acquisition.Select two kinds of welding methods of CO2 shielded welding and Lincoln weld respectively five kinds of joint forms to be tested, acquisition of welding parameters during test, that is: welding current, weldingvoltage, speed of welding; The deformation parameter of test specimen (angular deformation), field of welding temperature change.The collection of welding parameter comes acquisition and recording with reometer, voltage table, speed of welding meter, the deformation parameter of test specimen comes survey record by dial gauge and steel ruler, the data 8 channel data acquisition module ART(3039 in temperature field) coordinate temperature sensor to measure, and carry out real-time survey record by computing machine.
The simulation of computing machine Thermal-mechanical Coupling finite element simulation.Utilize finite element analysis software MSC/MARC respectively two types of joints to be carried out three-dimensional modeling, input analogue unit type, material property parameter are then according to geometrical property and working condition division unit grid.Then utilizing software to carry out thermal source loads and conditions setting, namely simulate welding in computing machine according to welding process requirement, then calculate by software and find the solution, obtain the distribution of real-time welding stress, strain cloud atlas and Residual stresses and strains by the Thermal-mechanical Coupling simulation analysis.
The experiment contrast.The data of the data that obtain by experiment and three-dimensional model analysis compare inspection, if meeting the explanation finite element model with experiment sets up suitably, if the larger explanation finite element model of deviation has problems at aspects such as grid division, thermal source definition, need to revise finite element model, to improve the finite element model of this welding node, until experiment matches with analysis result, so that analysis result approaches reality more, and have representative widely.Contrast by experiment, revise, set up the finite element analysis model of having optimized all kinds of joints, use for the production calculation analysis.
By all kinds of joint finite element analysis models of having set up, can input the welding parameters such as welding method, groove parameter, welding current, weldingvoltage, speed of welding when formulating welding technology before welding is produced, calculate welding residual deformation and the stress of joint, provide theoretical basis and technical support to the welding engineer, taked Counter-measures to formulate more rational welding technology.
Claims (8)
1. a Welding Deformation of Steel Structure analytical approach, is characterized in that comprising the steps:
A, set up computing machine welding joint model, the joint of dull and stereotyped V-type open joint, dull and stereotyped X-type open joint, T connector double V-groove, T connector X-type groove, 5 kinds of standards of corner joint double V-groove is simplified to plate open joint and two kinds of forms of T connector;
B, on-site data gathering;
C, the simulation of computing machine Thermal-mechanical Coupling finite element simulation;
D, Data Comparison, the data of the data that obtain by experiment and three-dimensional model analysis compare inspection;
E, formulation welding technology; By welding parameters such as input welding method, groove parameter, welding current, weldingvoltage, speeds of welding, calculate welding residual deformation and the stress of joint.
2. according to claim 1 with storing a kind of Welding Deformation of Steel Structure analytical approach, it is characterized in that: the foundation of described computing machine welding joint model according to parameter is: root face, groove gap, groove depth, groove angle and steel plate thickness.
3. according to claim 1 with storing a kind of Welding Deformation of Steel Structure analytical approach, it is characterized in that: described data acquisition comprises the welding parameter collection; The deformation parameter collection of test specimen, field of welding temperature change collection.
4. according to claim 3 with storing a kind of Welding Deformation of Steel Structure analytical approach, it is characterized in that: the sampling instrument of described welding parameter is: reometer, voltage table, speed of welding meter.
5. according to claim 3 with storing a kind of Welding Deformation of Steel Structure analytical approach, it is characterized in that: the deformation parameter of described test specimen comes survey record by dial gauge and steel ruler; The data 8 channel data acquisition modules in described temperature field coordinate temperature sensor to measure, and carry out real-time survey record by computing machine.
6. according to claim 1 with storing a kind of Welding Deformation of Steel Structure analytical approach, it is characterized in that: described computing machine Thermal-mechanical Coupling finite element simulation simulation steps is:
A, utilize finite element analysis software MSC/MARC respectively two types of joints to be carried out three-dimensional modeling;
B, input analogue unit type, material property parameter; According to geometrical property and working condition division unit grid;
C, utilize software to carry out that thermal source loads and conditions setting; Simulate welding according to welding process requirement in computing machine, then calculate by software and find the solution;
D, obtain the scatter chart of real-time welding stress, strain cloud atlas and Residual stresses and strains by the Thermal-mechanical Coupling simulation analysis.
7. according to claim 1 with storing a kind of Welding Deformation of Steel Structure analytical approach, it is characterized in that: the data of the data that described experiment obtains and three-dimensional model analysis compare inspection and are: the data fit explanation finite element model that experimental data and three-dimensional model are analyzed is set up suitably; The data of experimental data and three-dimensional model analysis are not inconsistent, and finite element model are revised, rebulid the finite element analysis model of all kinds of joints.
8. according to claim 1 with storing a kind of Welding Deformation of Steel Structure analytical approach, it is characterized in that: described welding method is CO2 shielded welding and two kinds of welding methods of Lincoln weld.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551712A (en) * | 2013-10-29 | 2014-02-05 | 中国电子科技集团公司第三十八研究所 | Method for predicting welding deformation of large radar structural part |
| CN105844067A (en) * | 2016-06-14 | 2016-08-10 | 大连船舶重工集团有限公司 | Method for obtaining automatic processing data of welding variable groove of hull curve plate |
| CN107220410A (en) * | 2017-05-03 | 2017-09-29 | 中车青岛四方机车车辆股份有限公司 | Parameter is on welding residual stress and deformation influence susceptibility acquisition methods |
| CN107871029A (en) * | 2016-09-26 | 2018-04-03 | 首都航天机械公司 | Predict the Finite Element Method of ageing strengthening Aluminum Alloy TIG Welding joint breaking process |
| CN108646689A (en) * | 2018-06-12 | 2018-10-12 | 中车青岛四方机车车辆股份有限公司 | A kind of virtual method for manufacturing and system based on welding |
| CN109175759A (en) * | 2018-10-25 | 2019-01-11 | 程力专用汽车股份有限公司 | L-type welding point and its production method |
| CN109543328A (en) * | 2018-11-30 | 2019-03-29 | 中国核工业二三建设有限公司 | A kind of analogy method of major diameter Double-layer flexible weldment stress and strain |
| CN110619188A (en) * | 2019-09-26 | 2019-12-27 | 华中科技大学 | Welding deformation stress simulation method, device, equipment and storage medium |
| CN111375930A (en) * | 2018-12-27 | 2020-07-07 | 中车唐山机车车辆有限公司 | Welding deformation control method |
| CN112775578A (en) * | 2021-01-20 | 2021-05-11 | 招商局金陵鼎衡船舶(扬州)有限公司 | Simulation analysis method for reducing welding deformation and welding process obtained by simulation analysis method |
| CN113210910A (en) * | 2021-04-27 | 2021-08-06 | 中国一冶集团有限公司 | Deformation-preventing welding method for large-span steel structure |
| CN113433008A (en) * | 2021-06-07 | 2021-09-24 | 天津大学 | Deep level platform welded joint test system |
| CN113849924A (en) * | 2021-08-19 | 2021-12-28 | 北京市机械施工集团有限公司 | Steel structure welding residual stress and deformation method and system based on ABAQUS |
| CN115805381A (en) * | 2023-01-03 | 2023-03-17 | 中国原子能科学研究院 | Welding deformation prediction method |
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Cited By (24)
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| CN103551712B (en) * | 2013-10-29 | 2015-08-05 | 中国电子科技集团公司第三十八研究所 | The method of prediction radar large-sized structural parts welding deformation |
| CN103551712A (en) * | 2013-10-29 | 2014-02-05 | 中国电子科技集团公司第三十八研究所 | Method for predicting welding deformation of large radar structural part |
| CN105844067A (en) * | 2016-06-14 | 2016-08-10 | 大连船舶重工集团有限公司 | Method for obtaining automatic processing data of welding variable groove of hull curve plate |
| CN105844067B (en) * | 2016-06-14 | 2019-02-19 | 大连船舶重工集团有限公司 | A kind of hull curve plate welding becomes the acquisition methods of the automatic process data of groove |
| CN107871029A (en) * | 2016-09-26 | 2018-04-03 | 首都航天机械公司 | Predict the Finite Element Method of ageing strengthening Aluminum Alloy TIG Welding joint breaking process |
| CN107871029B (en) * | 2016-09-26 | 2021-05-18 | 首都航天机械公司 | Finite element simulation method for predicting fracture process of aging-strengthened aluminum alloy TIG welding head |
| CN107220410A (en) * | 2017-05-03 | 2017-09-29 | 中车青岛四方机车车辆股份有限公司 | Parameter is on welding residual stress and deformation influence susceptibility acquisition methods |
| CN107220410B (en) * | 2017-05-03 | 2020-09-04 | 中车青岛四方机车车辆股份有限公司 | Method for acquiring influence sensitivity of parameters to welding residual stress and deformation |
| CN108646689B (en) * | 2018-06-12 | 2020-04-14 | 中车青岛四方机车车辆股份有限公司 | Virtual production manufacturing method and system based on welding |
| CN108646689A (en) * | 2018-06-12 | 2018-10-12 | 中车青岛四方机车车辆股份有限公司 | A kind of virtual method for manufacturing and system based on welding |
| CN109175759A (en) * | 2018-10-25 | 2019-01-11 | 程力专用汽车股份有限公司 | L-type welding point and its production method |
| CN109175759B (en) * | 2018-10-25 | 2024-03-19 | 程力专用汽车股份有限公司 | Evaluation method of stress value of L-shaped welding joint |
| CN109543328A (en) * | 2018-11-30 | 2019-03-29 | 中国核工业二三建设有限公司 | A kind of analogy method of major diameter Double-layer flexible weldment stress and strain |
| CN111375930A (en) * | 2018-12-27 | 2020-07-07 | 中车唐山机车车辆有限公司 | Welding deformation control method |
| CN110619188A (en) * | 2019-09-26 | 2019-12-27 | 华中科技大学 | Welding deformation stress simulation method, device, equipment and storage medium |
| CN110619188B (en) * | 2019-09-26 | 2021-07-30 | 华中科技大学 | Welding deformation stress simulation method, device, equipment and storage medium |
| CN112775578A (en) * | 2021-01-20 | 2021-05-11 | 招商局金陵鼎衡船舶(扬州)有限公司 | Simulation analysis method for reducing welding deformation and welding process obtained by simulation analysis method |
| CN113210910A (en) * | 2021-04-27 | 2021-08-06 | 中国一冶集团有限公司 | Deformation-preventing welding method for large-span steel structure |
| CN113433008A (en) * | 2021-06-07 | 2021-09-24 | 天津大学 | Deep level platform welded joint test system |
| CN113433008B (en) * | 2021-06-07 | 2022-06-21 | 天津大学 | Deep level platform welded joint test system |
| CN113849924B (en) * | 2021-08-19 | 2022-07-22 | 北京市机械施工集团有限公司 | Steel structure welding residual stress and deformation method and system based on ABAQUS |
| CN113849924A (en) * | 2021-08-19 | 2021-12-28 | 北京市机械施工集团有限公司 | Steel structure welding residual stress and deformation method and system based on ABAQUS |
| CN115805381A (en) * | 2023-01-03 | 2023-03-17 | 中国原子能科学研究院 | Welding deformation prediction method |
| CN115805381B (en) * | 2023-01-03 | 2024-03-22 | 中国原子能科学研究院 | Welding deformation prediction method |
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Application publication date: 20130626 |