CN112464539A - ANSYS-based simulation analysis method for thermal battery support lug impact resistance - Google Patents
ANSYS-based simulation analysis method for thermal battery support lug impact resistance Download PDFInfo
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- 238000004088 simulation Methods 0.000 title claims abstract description 54
- 238000004458 analytical method Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000004364 calculation method Methods 0.000 claims abstract description 10
- 238000013461 design Methods 0.000 claims abstract description 10
- 230000001052 transient effect Effects 0.000 claims abstract description 7
- 238000005457 optimization Methods 0.000 claims abstract description 5
- 230000002787 reinforcement Effects 0.000 claims abstract description 4
- 230000011218 segmentation Effects 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 16
- 230000004927 fusion Effects 0.000 claims description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000005493 welding type Methods 0.000 claims description 3
- 229910001256 stainless steel alloy Inorganic materials 0.000 claims description 2
- 239000011257 shell material Substances 0.000 description 30
- 238000012360 testing method Methods 0.000 description 8
- 238000009863 impact test Methods 0.000 description 6
- 230000035939 shock Effects 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 238000012827 research and development Methods 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- 230000008092 positive effect Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
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Abstract
The invention relates to a simulation analysis method for thermal battery support lug impact resistance based on ANSYS, which comprises the following steps: adopting NX modeling software to establish a thermal battery three-dimensional simulation model, and simplifying a galvanic pile model in the thermal battery into a cylindrical model; loading the thermal battery three-dimensional simulation model into a Transient structural module in ANSYS workbench software, and performing material definition on the thermal battery model and performing surface mark segmentation on a thermal battery cover body; performing grid division on a thermal battery three-dimensional simulation model establishing a contact relation and setting boundary conditions, wherein the boundary condition setting comprises setting thermal battery fixed points, setting impact time step lengths, setting impact quantity values and setting impact directions; and performing simulation calculation to obtain a stress distribution cloud picture of the thermal battery and deformation conditions of all parts in the thermal battery impact process, and performing optimization reinforcement design on weak points of the thermal battery according to a calculation result.
Description
Technical Field
The invention belongs to the technical field of thermal batteries, and particularly relates to a simulation analysis method for impact resistance of a thermal battery support lug based on ANSYS.
Background
The thermal battery is used as a primary reserve power supply of a weapon power supply system, and not only meets the electrical performance index requirements of the weapon missile-borne power supply, but also meets the harsh impact and overload resistant requirements of the weapon system. At present, a test method for checking the impact and overload resistance of a thermal battery is mainly completed through an impact test bed. Considering the safety factor, the method generally fixes the thermal battery to be tested in a specific test tool, and then fixes the test tool fixed with the thermal battery on an impact action part of an impact test bed; and then, according to the impact parameters of the thermal battery, programming the test bed to complete the impact test. The impact and overload resistance performance examination is completed by the tool, on one hand, the weight of the thermal battery is increased, and on the other hand, the direct contact point of the impact test bed is the tool and not the thermal battery. When the thermal battery is actually installed and used, the thermal battery is not installed with a test tool. Impact test bench has certain deviation with the actual overload force of thermal battery in weapon system to the impact resistance overload performance examination of taking frock thermal battery, is unfavorable for simultaneously developing the exposure of thermal battery structural design defect in-process.
Disclosure of Invention
The invention discloses a simulation analysis method for thermal battery support lug impact resistance based on ANSYS, which is used for solving the problems of the thermal battery support lug impact resistance examination technology and means.
The invention relates to a simulation analysis method for thermal battery support lug impact resistance based on ANSYS, which comprises the following steps: adopting NX modeling software to establish a thermal battery three-dimensional simulation model, and simplifying a galvanic pile model in the thermal battery into a cylindrical model; loading the thermal battery three-dimensional simulation model into a Transient structural module in ANSYS workbench software, and performing material definition on the thermal battery model and performing surface mark segmentation on a thermal battery cover body; performing grid division on a thermal battery three-dimensional simulation model establishing a contact relation and setting boundary conditions, wherein the boundary condition setting comprises setting thermal battery fixed points, setting impact time step lengths, setting impact quantity values and setting impact directions; and performing simulation calculation to obtain a stress distribution cloud picture of the thermal battery and deformation conditions of all parts in the thermal battery impact process, and performing optimization reinforcement design on weak points of the thermal battery according to a calculation result.
According to an embodiment of the method for the simulation analysis of the impact resistance of the thermal battery support lug based on ANSYS, the contact arrangement between the cover body and the shell body and between the shell body and the support lug is set according to the actual welding type.
According to an embodiment of the method for simulating and analyzing the impact resistance of the thermal battery support lug based on ANSYS, the number of the support lugs is set to be 1-6.
According to an embodiment of the invention, the thermal battery support lug impact resistance simulation analysis method based on ANSYS is adopted, wherein the thickness of the support lug is 0.1-10 mm.
According to an embodiment of the invention, the impact resistance of the support lug of the thermal battery is simulated and analyzed based on ANSYS, wherein the support lug is welded on the thermal battery shell at the top of the thermal battery cover, the bottom of the thermal battery shell, the middle of the shell or the top of the shell.
According to an embodiment of the simulation analysis method for the impact resistance of the thermal battery support lugs based on ANSYS, when 2 or more than 2 support lugs are arranged on the thermal battery, the included angle between the support lugs is 30-180 degrees.
According to an embodiment of the simulation analysis method for the impact resistance of the thermal battery support lug based on ANSYS, the thermal battery shell material, the cover body material and the support lug material are made of stainless steel or aluminum alloy.
According to an embodiment of the method for simulation analysis of the impact resistance of the thermoelectric cell support lug based on ANSYS, the thermopile cylinder model of the thermoelectric cell is the same as the actual thermopile mass and the thermopile centroid position.
According to an embodiment of the simulation analysis method for the impact resistance of the thermal battery support lug based on ANSYS, when the imprint of the thermal battery cover body surface is that the thickness of the battery cover body is 1 mm-5 mm, and the fusion depth is 0.1 mm-1 mm, the side surface of the cover body is divided into a fusion welding part and a non-fusion welding part.
According to one embodiment of the simulation analysis method for the impact resistance of the thermal battery support lug based on ANSYS, argon arc welding is adopted between the thermal battery cover body and the shell, surface-to-surface contact is set between the cover body fusion welding part and the shell, and the contact form is set as Bound; the part of the cover body which is not welded is in surface-to-surface contact with the shell, and the contact form is No Separation; the support lug and the shell are welded by laser, and the support lug and the shell are in line-surface contact.
Meanwhile, theoretical reference basis is provided for structural design optimization in the thermal battery research and development process, the invention innovatively provides a simulation analysis method for impact resistance test of the thermal battery support lug based on ANSYS, the influence of a tool on the thermal battery support lug in the impact and overload resistance performance assessment process can be effectively avoided, and meanwhile, theoretical reference value is provided for the thermal battery structural design.
Drawings
FIG. 1 is an isometric view of a thermal battery simulation model;
FIG. 2 is an isometric view of a thermal battery lug simulation model;
FIG. 3 is a view of the print on the side of the cover 1;
FIG. 4 is a stress cloud plot after thermal battery impact simulation testing.
Reference numerals:
a cover body 1; a housing 2; a support lug 3; a support lug 4; a support lug 5; a support lug 6, a support lug bottom surface 11; a lug mounting hole 12; a cover and housing welding surface 21; the cover and housing are not welded at 22.
Detailed Description
In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
The invention comprises a simulation analysis method for thermal battery support lug impact resistance based on ANSYS, which comprises the following steps: judging that the impact resistance assessment of the thermal battery belongs to a Transient process, and simulating and analyzing the impact resistance and overload resistance of a thermal battery support lug in a tool-free state of the thermal battery by adopting a Transient Structural module in ANSYS Workbench software. The method specifically comprises the following steps:
(1) adopting NX modeling software to establish a thermal battery three-dimensional simulation model, and simplifying a galvanic pile model in the thermal battery into a cylindrical model;
(2) loading a thermal battery three-dimensional simulation model into a Transient structural module in ANSYS workbench software, performing material definition on the thermal battery model, performing surface imprint segmentation on a thermal battery cover body 1, and setting contact between the cover body 1 and a shell body 2 and contact between the shell body 2 and a support lug according to actual welding types;
(3) and carrying out grid division on the thermal battery three-dimensional simulation model establishing the contact relation and setting boundary conditions. Setting a thermal battery fixing point, setting an impact time step length, setting an impact value and setting an impact direction;
(4) and performing simulation calculation to obtain a stress distribution cloud chart of the thermal battery and deformation conditions of all parts in the thermal battery impact process, and performing optimization reinforcement design on weak points of the thermal battery according to a calculation result.
The number of the support lugs 3-6 is usually 1-6, but is not limited to 1-6;
the support lugs 3-6 are 0.1-10 mm thick;
the support lugs 3-6 are arranged at the welding positions of the thermal battery shell 2, such as the top of the thermal battery cover body 1, the bottom of the thermal battery shell, the middle of the shell 2 or the top of the shell 2, but not limited to the distribution of the positions;
the support lugs 3-6 are arranged on the thermal battery, and when 2 or more than 2 thermal batteries are arranged on the thermal battery, the included angle between the support lugs can be 30-180 degrees, but the included angle is not limited to the range of the included angle;
the thermal battery is made of a shell 2 material, a cover body 1 material and a support lug material, including but not limited to a stainless steel material and an aluminum alloy material;
the quality and the mass center position of the pile of the thermal battery are the same as the actual pile of the thermal battery;
when the thickness of the battery cover body 1 is 1 mm-5 mm and the depth of fusion is 0.1 mm-1 mm, the side surface of the cover body 1 is divided into a fusion welding part (0.1 mm-1 mm) and an unfused part (0.9 mm-4 mm);
argon arc welding is adopted between the cover body 1 and the shell body 2 of the thermal battery, surface-to-surface contact is set between the fusion welding part of the cover body 1 and the shell body 2, and the contact form is set as Bound; the part of the cover body 1 which is not welded is in surface-to-surface contact with the shell body 2, and the contact form is No Separation; the support lug and the shell 2 are welded by laser, and the support lug and the shell 2 are in line-surface contact and contact with each other in a Bound contact mode with a Pinball Radius value of 0.01-0.1 mm.
The fixing point of the thermal battery is fixed by selecting a support lug mounting hole 12 or a support lug mounting bottom surface;
and the thermal battery impact value is determined according to the thermal battery impact waveform, the impact time and the acceleration value. When the shock is performed with a half sine wave, the shock magnitude is set to acceleration × sin [ 360/(shock time of one cycle) × time ];
and (4) judging the weak points of the thermal battery, and comparing the stress generated on the thermal battery model after simulation calculation with the yield strength of the corresponding material to determine the weak points of the thermal battery.
The invention has the characteristics and positive effects that:
1) by adopting the simulation analysis method provided by the invention, the influence of the tool on the thermal battery support lug in the impact and overload resistance performance assessment process can be effectively avoided, the stress analysis can be carried out by directly or indirectly applying overload forces with different sizes and different directions on the local stress condition of the thermal battery, and the research and development efficiency is greatly improved;
2) the simulation analysis method provided by the invention can reduce the cycle and cost of tool design, processing and the like and the consumption of a thermal battery. Greatly shorten the research and development cycle of thermal battery, reduce thermal battery research and development cost, still can effectively avoid the potential safety hazard in the thermal battery shock resistance test process simultaneously.
Example (b): taking a thermal battery with 4 support lugs as an example, the impact test conditions are that the impact acceleration is 40g, the waveform is a half sine wave (single), the overload time is 9ms, and the impact overload direction is Z direction, single. The implementation steps are as follows:
(1) geometric modeling: according to the fixed installation requirement of the thermal battery, the thermal battery is designed into the thermal battery with the support lug by adopting NX software. See fig. 1 for a three-dimensional simulation model of designing a thermal battery. FIG. 1 is a schematic diagram of a three-dimensional model of a thermal battery according to an embodiment of the present invention.
(2) The thermal battery with the support lug shown in fig. 1 is led into a Transient structural module in ANSYS workbench software, and is defined according to the materials used by the thermal battery, and the materials of the shell 2, the cover body 1, the support lug and the like are stainless steel.
(3) Argon arc welding is adopted between the cover body 1 and the shell body 2, and after the model is loaded, surface marking processing is carried out on the cylindrical surface of the cover body 1 in a Design model with the melting depth of 0.5mm, see attached figure 2. The contact form of the thermal battery cover body 1 fusion welding part and the shell body 2 is set as bound, and the contact form of the thermal battery cover body 1 non-fusion welding part and the shell body 2 is set as No Separation; adopt laser welding between journal stirrup 1, journal stirrup 2, journal stirrup 3, journal stirrup 4 and the casing 2, all contact 4 journal stirrups and casing 2 with line and face, the contact form sets up to round, sets up Pinball Radius simultaneously and is 0.1 mm. And meshing the thermal battery three-dimensional simulation model with the contact in a Mechanical form.
(4) The fixed lug mounting hole 12 is a fixed point; the time step is set to 9.e-003 s; the impact direction is set to be Z direction; the shock acceleration magnitude is set as: 40X 9.8X 1000 Xsin [ 360/(2X 0.009). times ]. And (4) carrying out simulation calculation to obtain a stress distribution cloud chart of the thermal battery, which is shown in an attached figure 4.
And (3) analyzing the impact simulation test result:
as shown in the attached figure 4, after the thermal battery is subjected to the impact simulation under the above conditions, the stress at the welding positions of the bottom and the support lugs and the shell 2 is concentrated, the maximum value is 88.3MPa, and the stress values at the welding positions of the four support lugs and the shell 2 are about 29MPa to 39 MPa. After the die impact simulation, the maximum stress borne by the thermal battery is far smaller than the tensile strength (515MPa) of the stainless steel material, and the design of the fixing mode of the support lug of the thermal battery can be judged to be reasonable.
The described embodiments are only a part of the present invention, not all of it, and the present invention is applicable to the impact resistance simulation analysis method of all the thermal battery support lugs.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A simulation analysis method for thermal battery support lug impact resistance based on ANSYS is characterized by comprising the following steps:
adopting NX modeling software to establish a thermal battery three-dimensional simulation model, and simplifying a galvanic pile model in the thermal battery into a cylindrical model;
loading the thermal battery three-dimensional simulation model into a Transient structural module in ANSYS workbench software, and performing material definition on the thermal battery model and performing surface mark segmentation on a thermal battery cover body;
performing grid division on a thermal battery three-dimensional simulation model establishing a contact relation and setting boundary conditions, wherein the boundary condition setting comprises setting thermal battery fixed points, setting impact time step lengths, setting impact quantity values and setting impact directions;
and performing simulation calculation to obtain a stress distribution cloud picture of the thermal battery and deformation conditions of all parts in the thermal battery impact process, and performing optimization reinforcement design on weak points of the thermal battery according to a calculation result.
2. The method for simulation analysis of impact resistance of a heat battery tab based on ANSYS as claimed in claim 1, wherein the contact arrangement between the cover and the case and between the case and the tab is set according to an actual welding type.
3. The method for simulation analysis of thermal battery lug impact resistance based on ANSYS of claim 2, wherein the number of the lugs is set to 1 to 6.
4. The method for the simulation analysis of the thermal battery lug impact resistance based on ANSYS of claim 2, wherein the lug has a thickness of 0.1 to 10 mm.
5. The method for simulation analysis of thermal battery tab impact resistance based on ANSYS of claim 1, wherein the tab is at a thermal battery case weld location that is at a thermal battery case top, a thermal battery case bottom, a case middle, or a case top.
6. The ANSYS-based simulation analysis method for the impact resistance of the thermal battery support lugs as claimed in claim 1, wherein when 2 or more than 2 support lugs are mounted on the thermal battery, the included angle between the support lugs is 30-180 °.
7. The method for simulation analysis of thermal battery lug impact resistance based on ANSYS of claim 1, wherein the thermal battery case material, the cover material, and the lug material are stainless steel or aluminum alloy.
8. The method for simulation analysis of thermal battery lug impact resistance based on ANSYS of claim 1, wherein the thermopile cylinder model of the thermal battery is the same as the actual thermal battery thermopile mass and the thermopile centroid position.
9. The method for simulation analysis of impact resistance of a heat battery tab according to claim 1 based on ANSYS, wherein the thermal battery cover face imprint divides the cover side face into two parts of a welded part and an unwelded part when the battery cover has a thickness of 1mm to 5mm and a depth of fusion of 0.1mm to 1 mm.
10. The ANSYS-based simulation analysis method for impact resistance of a thermal battery support lug according to claim 1, wherein argon arc welding is performed between the thermal battery cover and the case, surface-to-surface contact is performed between the cover welded part and the case, and the contact is formed as Bound; the part of the cover body which is not welded is in surface-to-surface contact with the shell, and the contact form is No Separation; the support lug and the shell are welded by laser, and the support lug and the shell are in line-surface contact.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113210809A (en) * | 2021-04-27 | 2021-08-06 | 西安北方庆华机电有限公司 | Support lug structure, welding fixture for fixing support lug structure and support lug battery shell welding method |
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