CN117852344A - Simulation modeling method for assembling process of all-steel engineering machinery tire and rim - Google Patents
Simulation modeling method for assembling process of all-steel engineering machinery tire and rim Download PDFInfo
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- CN117852344A CN117852344A CN202311845187.0A CN202311845187A CN117852344A CN 117852344 A CN117852344 A CN 117852344A CN 202311845187 A CN202311845187 A CN 202311845187A CN 117852344 A CN117852344 A CN 117852344A
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- 238000000034 method Methods 0.000 title claims abstract description 61
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 18
- 239000010959 steel Substances 0.000 title claims abstract description 18
- 238000005094 computer simulation Methods 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 64
- 239000011324 bead Substances 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000004088 simulation Methods 0.000 claims abstract description 10
- 230000002787 reinforcement Effects 0.000 claims description 21
- 230000006870 function Effects 0.000 claims description 9
- 230000002401 inhibitory effect Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000011161 development Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000009877 rendering Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012821 model calculation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The invention provides a simulation modeling method for an assembling process of an all-steel engineering machine tire and a rim, which simulates the assembling and inflating processes of the tubeless all-steel engineering machine tire and the rim, and comprises the following steps of S1: simplifying the rim geometric model; s2: building a two-dimensional tire and rim grid model, and additionally building a sealing ring part for modeling; s3: defining material parameters; s4: constructing a connection relation and a constraint; s5: defining analysis types and boundary conditions; s6: calculating and outputting simulation results, and extracting two parameters of contact pressure CPRESS at the bottom of a tire bead and sealing ring strain NE; the tire bead diameter d and the sealing ring model are adjusted by utilizing the parameter, so that the optimal tire bead diameter d and the optimal sealing ring model are found, the risks of difficult disassembly, air leakage and sealing ring split of a product are reduced, repeated outdoor tests are avoided, the development period is shortened, and the development cost is reduced.
Description
Technical Field
The invention belongs to the technical field of finite element simulation of tires and rims, and particularly relates to a simulation modeling method for an assembly process of an all-steel engineering machine tire and a rim.
Background
When the tubeless all-steel engineering machinery tire is used, the tubeless all-steel engineering machinery tire is directly arranged on a tubeless rim, and the sealing of the joint of the tire bead and the rim mainly depends on two aspects: (1) The interference fit between the tire bead and the rim, namely the tire bead diameter D is smaller than the rim calibration diameter D; (2) And a sealing ring between the bottom of the movable rim seat ring and the rim body. Practice shows that the difficulty in disassembling the tire, the air leakage and the split of the sealing ring are closely related to the bead diameter d and the sealing ring diameter. The design of the bead surface and the diameter d is too large, so that the contact pressure CPRESS at the bottom of the bead is too small, the air leakage risk exists when the product is used, the design of the bead surface and the diameter d is too small, the contact pressure CPRESS at the bottom of the bead is too large, the product is difficult to disassemble when the product is used, and the operation efficiency is influenced; the diameter of the rim sealing ring is too large, the movable wheel rim seat ring is easy to crack and leak due to large extrusion deformation in the assembly process, the sealing ring needs to be continuously replaced, the operation efficiency is seriously affected, the diameter of the rim sealing ring is too small, the sealing effect cannot be achieved, and gas leaks from the bottom of the movable wheel rim seat ring to the rim body.
In the actual design process of the tire, as the method for acquiring the contact pressure CPRESS at the bottom of the tire bead and the strain NE parameters of the sealing ring are lacking, the tire bead diameter d and the sealing ring shape selection are mainly based on the experience of engineers, the tire is usually required to be produced and is sent to the market for testing, if the problems of difficult disassembly, tire leakage, sealing ring split and the like exist, the tire bead design and the sealing ring shape selection are adjusted and the testing is carried out again, and the test is repeated until the problems are solved, so that the trial-and-error method has long period and high cost.
Therefore, the technical problems to be solved by the invention are as follows: the prior art lacks the method for obtaining the contact pressure CPRESS at the bottom of the tire bead and the strain NE parameter of the sealing ring, the tire bead is provided with a diameter d and the sealing ring is selected, the sample tire is required to be produced, the sample tire is sent to the market for testing, and finally, the proper tire bead and the sealing ring are selected.
Disclosure of Invention
In order to solve the technical problems that the prior art lacks a method for acquiring the contact pressure CPRESS at the bottom of a tire bead and the strain NE parameters of a sealing ring, the tire bead is provided with a sample tire, the diameter d and the sealing ring are selected, the sample tire is required to be produced and is sent to the market for testing, and finally, the proper tire bead and the sealing ring are selected.
The specific scheme is as follows:
a simulation modeling method for an assembly process of an all-steel engineering machinery tire and a rim specifically comprises the following steps:
step S1: simplifying a rim geometric model, combining a rim body and a lock ring into a part according to a rim drawing in actual use, and taking only the contour lines of the rim body and the lock ring;
step S2: building a two-dimensional tire and rim grid model, and additionally building a sealing ring part for modeling;
step S3: defining material parameters;
step S4: constructing a connection relation and a constraint;
step S5: defining analysis types and boundary conditions;
step S6: and calculating and outputting a simulation result, obtaining a result file, and extracting two parameters of the contact pressure CPRESS at the bottom of the tire bead and the strain NE of the sealing ring.
The step S2 comprises rubber body component modeling, unit type is CGAX4H/CGAX3H, reinforcement component modeling, unit type is SFGMAX1, rim body component modeling, unit type is analytic rigid body, movable rim seat ring component modeling, unit type is CGAX4H, seal ring component modeling, and unit type is CGAX4H.
The step S3 includes:
s31: defining a section type, wherein the rubber body part adopts uniform solid section attribute, and the reinforcement adopts shell section attribute;
s32: defining the material properties of rubber bodies, wherein the rubber units adopt Mooney-Rivlin super-elastic constitutive models, and different rubber body parts respectively establish corresponding constitutive models according to DMA experimental data and assign the constitutive models to corresponding rubber body part sections;
s33: and defining the material properties of the reinforcement, wherein the reinforcement units adopt a Marlow model, and different reinforcements respectively create corresponding constitutive models according to experimental data of the electronic tensile tester and assign the constitutive models to corresponding reinforcement sections.
In the step S4, the defined contact pairs and contact attributes are as follows:
the top of the movable rim seat ring is in node-surface contact with the bottom of the tire bead, the rim body is in hard contact with the bottom of the tire bead, the tangential direction is a penalty function method, and the friction coefficient is 0.05-0.20;
the bottom of the movable rim seat ring is in surface-to-surface contact with the sealing ring, the rim body is in hard contact with the sealing ring, the tangential direction is a penalty function method, and the friction coefficient is 0.00-0.10;
the bottom of the movable rim seat ring is in point-surface contact with the rim body, the normal direction is hard contact, the tangential direction is a penalty function method, and the friction coefficient is 0.01-0.10;
defining constraint, and embedding constraint is adopted between the rubber body unit and the reinforcement body unit.
The step S5 includes:
s51: defining a solver, wherein nonlinear statics general analysis is adopted in the tire and rim assembly process and the inflation process;
s52: boundary conditions are defined, including displacement and pressure loading.
Wherein, the step S52 includes:
s521: mounting a rim body, and temporarily inhibiting a contact pair between the bottom of the movable rim seat ring and the rim body;
s522: installing a movable wheel rim seat ring, wherein the actual rim width is smaller than the standard rim width;
s523: installing a sealing ring, and temporarily inhibiting two contact pairs between the bottom of the movable rim seat ring and the sealing ring and between the rim body and the sealing ring;
s524: and installing a lock ring and inflating, and activating three contact pairs of the bottom of the movable rim seat ring and the rim body, the bottom of the movable rim seat ring and the sealing ring, and the rim body and the sealing ring, so that uniform pressure load is applied to the inner surface of the tire.
A computer device includes a memory storing models and program files, a processor rendering, running the models and program files in memory, and a display displaying the models and result files in memory.
The beneficial effects of the invention are as follows:
the invention provides a simulation modeling method for an assembling process of an all-steel engineering machinery tire and a rim, which can simulate the assembling and inflating process of the all-steel engineering machinery tire and the rim by utilizing finite element analysis software ABAQUS in a tire design stage, acquire two parameters of a contact pressure CPRESS at the bottom of the tire bead and a strain NE of a sealing ring, and enable the contact pressure CPRESS at the bottom of the tire bead and the strain NE of the sealing ring to meet design specifications by adjusting the bead diameter d and the model of the sealing ring, thereby finding the optimal bead diameter d and model of the sealing ring, reducing the risks of difficult disassembly, air leakage and split of the sealing ring of a product, avoiding repeated outdoor tests, shortening the development period and reducing the development cost.
Drawings
FIG. 1 is a flow chart of a simulation modeling method of the present invention.
Fig. 2 is a cross-sectional view of a rim of an embodiment of the invention.
Fig. 3 is a simplified geometric diagram of a rim of an embodiment of the present invention.
FIG. 4 is a diagram of an unloaded two-dimensional rim and tire model of an embodiment of the invention.
FIG. 5 is a diagram of a two-dimensional rim and tire model loaded by an embodiment of the present invention.
Fig. 6 is a contact pressure CPRESS cloud at the bottom of the bead of an embodiment of the present invention.
Fig. 7 shows a seal ring strain NE cloud according to an embodiment of the present invention.
Wherein 1 is the rim nominal diameter A,2 is the loose wheel rim seat ring, 3 is the lock ring, 4 is the rim body, 5 is the seal ring groove, 6 is the rim landing diameter D,7 is the rim body+lock ring, 8 is the rubber body, 9 is the reinforcement, 10 is the tire inner surface
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. It will be apparent to those skilled in the art that the described embodiments are only a part, but not all, of the implementations of the invention, and that all other embodiments, based on which those skilled in the art will come to lie within the scope of the invention without making any inventive effort.
According to the embodiment of the invention, the tire specification is 16.00R25, the simulated inflation pressure is 1500kPa, and the rim is 11.25/2.0-25, so that the contact pressure CPRESS at the bottom of the tire bead and the strain NE of the sealing ring are obtained.
As shown in fig. 1, a simulation modeling method for an assembly process of an all-steel engineering machinery tire and a rim specifically comprises the following steps:
step S1: simplifying a rim geometric model, combining a rim body 4 and a lock ring 3 into a part according to a rim drawing in actual use, and taking only the contour lines of the rim body 4 and the lock ring 3;
step S2: building a two-dimensional tire and rim grid model, and adding a sealing ring 11 part for modeling;
step S3: defining material parameters;
step S4: constructing a connection relation and a constraint;
step S5: defining analysis types and boundary conditions;
step S6: and calculating and outputting a simulation result, obtaining a result file, and extracting two parameters of the contact pressure CPRESS at the bottom of the tire bead and the strain NE of the sealing ring.
Fig. 2 is a cross-sectional view of a rim, wherein the upper part of the drawing is a rim nominal diameter A1, the lower left part is a rim landing diameter D6, a seal ring groove 11 is arranged below a loose rim seat ring 2, in the step S1, the movement of the loose rim seat ring 2 is prevented by considering the action of an actual lock ring 3, meanwhile, the problem of model convergence caused by excessive contact is considered, and a rim body 4 and the lock ring 3 are combined into a part according to a rim drawing actually used on the premise of not affecting the practicality of model engineering so as to reduce contact pairs and model calculation amount, and only the contour lines of the rim body 4 and the lock ring 3 are taken as analysis rigid bodies in the simulation process; the loose rim retainer 2 needs to be in contact with the tire bead and the rim body 4, and must take its cross-sectional geometry, as a non-deformable steel part during simulation, and the simplified geometry model is shown as rim body + lock ring 7 in fig. 3.
As shown in fig. 4, the step S2 includes a mesh model obtained by mesh-dividing the tire and the rim by using HYPERMESH, wherein the rubber body 8 part is modeled, the cell type is CGAX4H/CGAX3H, the reinforcement 9 part is modeled, the cell type is SFGMAX1, the rim body 4 part is modeled, the cell type is an analytical rigid body, the loose rim seat ring 2 part is modeled, the cell type is CGAX4H, the seal ring 11 part is modeled, and the cell type is CGAX4H.
The step S3 includes:
s31: defining a section type, namely a rubber body 8 comprising a movable rim seat ring 2, adopting uniform solid section properties, and a reinforcing body 9 adopting shell section properties comprising area, spacing and angle;
s32: defining the material properties of the rubber body 8, wherein the rubber units adopt Mooney-Rivlin super-elastic constitutive models, and different rubber body 8 parts respectively create corresponding constitutive models according to DMA experimental data and assign the constitutive models to corresponding rubber body 8 part sections;
s33: defining the material properties of the reinforcement 9, wherein the reinforcement 9 units adopt Marlow models, and different reinforcements 9 respectively create corresponding constitutive models according to experimental data of an electronic tensile tester and assign the constitutive models to corresponding reinforcement 9 sections.
In the step S4, the defined contact pairs and contact attributes are as follows:
the top of the movable rim seat ring 2 is contacted with the bottom of the tire bead, the rim body 4 is contacted with the bottom of the tire bead by adopting a node-surface contact mode, the normal direction is hard contact mode, the movable rim seat ring is impenetrable, the tangential direction is a penalty function mode, and the friction coefficient is 0.05-0.20;
the bottom of the movable wheel rim seat ring 2 is in surface-to-surface contact with the sealing ring 11, the rim body 4 is in hard contact with the sealing ring 11 in the normal direction, the movable wheel rim seat ring cannot penetrate, the tangential direction is a penalty function method, and the friction coefficient is 0.00-0.10;
the bottom of the movable wheel rim seat ring 2 is in point-surface contact with the rim body 4, the normal direction is hard contact and is impenetrable, the tangential direction is a penalty function method, and the friction coefficient is 0.01-0.10;
defining constraint, and embedding constraint is adopted between the rubber body 8 unit and the reinforcement body 9 unit.
The step S5 includes:
s51: defining a solver, wherein nonlinear statics general analysis is adopted in the tire and rim assembly process and the inflation process;
s52: boundary conditions are defined, including displacement and pressure loading.
The step S52 includes:
s521: mounting the rim body 4, wherein the process needs to temporarily restrain the contact pair between the bottom of the loose wheel rim seat ring 2 and the rim body 4, so as to avoid interference;
s522: installing the loose wheel rim seat ring 2, wherein the actual rim width is ensured to be less than the standard rim width of 286mm, so that the sealing ring 11 and the locking ring 3 are conveniently installed;
s523: installing the sealing ring 11, wherein the process needs to temporarily restrain two contact pairs of the bottom of the movable rim seat ring 2 and the sealing ring 11, and the rim body 4 and the sealing ring 11: interference is avoided;
s524: installing the lock ring 3 and inflating, wherein the process needs to activate three contact pairs of the bottom of the movable rim seat ring 2 and the rim body 4, the bottom of the movable rim seat ring 2 and the sealing ring 11, and the rim body 4 and the sealing ring 11, and the inner surface 10 of the tire applies a uniform pressure load of 1500 kPa.
In the step S6, the created tire model file, rim model file, material parameter file, model definition file and Windows execution command file are placed in the same file, and the execution command file is clicked, so that the simulation calculation is started, the simulation result is output, the loaded two-dimensional rim and tire model diagram is shown in fig. 5, the simulation result is extracted, the contact pressure CPRESS at the bottom of the tire bead is obtained, the contact pressure CPRESS cloud at the bottom of the tire bead is shown in fig. 6, the contact surface between the top of the movable rim seat ring 2 and the bottom of the tire bead is shown in fig. 6, the maximum contact pressure is 12.03MPa, and the design specification is satisfied by 10.00-13.00 MPa; the sealing ring strain NE is obtained, as shown in a sealing ring strain NE cloud chart in FIG. 7, a black area in FIG. 7 shows the contact surface of the rim body 4 and the sealing ring 11, the maximum strain NE is 1.113, and the design specification 1.10-1.20 is met.
According to the invention, through the six steps, two parameters of the contact pressure CPRESS at the bottom of the tire bead and the strain NE of the sealing ring in the actual assembly process of the tire are obtained, whether the two parameters meet the design specification or not is observed, the optimal tire bead diameter d and the model of the sealing ring 11 are found, and whether the problems of difficult disassembly, air leakage and cracking of the sealing ring 11 occur or not in the actual assembly process is judged, so that repeated outdoor tests are avoided, the development period is shortened, and the development cost is reduced.
A computer device includes a memory storing models and program files, a processor rendering, running related models and program files stored in the memory, and a display displaying the models and result files stored in the memory.
The technical means disclosed by the scheme of the invention is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (7)
1. A simulation modeling method for an assembly process of an all-steel engineering machinery tire and a rim is characterized by comprising the following steps of:
the method specifically comprises the following steps:
step S1: simplifying a rim geometric model, combining a rim body (4) and a lock ring (3) into a part according to a rim drawing in actual use, and taking only the contour lines of the rim body (4) and the lock ring (3);
step S2: building a two-dimensional tire and rim grid model, and additionally building a sealing ring part for modeling;
step S3: defining material parameters;
step S4: constructing a connection relation and a constraint;
step S5: defining analysis types and boundary conditions;
step S6: and calculating and outputting a simulation result, obtaining a result file, and extracting two parameters of the contact pressure CPRESS at the bottom of the tire bead and the strain NE of the sealing ring.
2. The simulation modeling method for the assembly process of the all-steel engineering machinery tire and the rim according to claim 1, wherein the method comprises the following steps of: the step S2 comprises the steps of modeling a rubber body (8) part, modeling a unit type by using CGAX4H/CGAX3H, modeling a reinforcement body (9) part, modeling a unit type by using SFGMAX1, modeling a rim body (4) part, modeling a movable rim seat ring (2) part, modeling a unit type by using CGAX4H and a sealing ring (11) part, and modeling a unit type by using CGAX4H.
3. The simulation modeling method for the assembly process of the all-steel engineering machinery tire and the rim according to claim 1, wherein the method comprises the following steps of: the step S3 includes:
s31: defining a section type, wherein the rubber body (8) part adopts uniform solid section attribute, and the reinforcement body (9) adopts shell section attribute;
s32: defining the material properties of a rubber body (8), wherein the rubber units adopt Mooney-Rivlin super-elastic constitutive models, and different rubber body (8) parts respectively create corresponding constitutive models according to DMA experimental data and assign the constitutive models to corresponding rubber body (8) part sections;
s33: defining the material properties of the reinforcement (9), wherein the reinforcement (9) units adopt Marlow models, and different reinforcement (9) respectively create corresponding constitutive models according to experimental data of an electronic tensile tester and assign the constitutive models to corresponding reinforcement (9) sections.
4. The simulation modeling method for the assembly process of the all-steel engineering machinery tire and the rim according to claim 1, wherein the method comprises the following steps of: in the step S4, the defined contact pairs and contact attributes are as follows:
the top of the movable rim seat ring (2) is contacted with the bottom of the tire bead, the rim body (4) is contacted with the bottom of the tire bead by adopting a node-surface contact mode, the normal direction is hard contact, the tangential direction is a penalty function method, and the friction coefficient is 0.05-0.20;
the bottom of the movable wheel rim seat ring (2) is in surface-surface contact with the sealing ring (11), the rim body (4) is in surface-surface contact with the sealing ring (11), the normal direction is in hard contact, the tangential direction is a penalty function method, and the friction coefficient is 0.00-0.10;
the bottom of the movable wheel rim seat ring (2) is in point-surface contact with the rim body (4), the normal direction is hard contact, the tangential direction is a penalty function method, and the friction coefficient is 0.01-0.10;
defining constraint, and embedding constraint is adopted between the rubber body (8) unit and the reinforcement body (8) unit.
5. The simulation modeling method for the assembly process of the all-steel engineering machinery tire and the rim according to claim 1, wherein the method comprises the following steps of: the step S5 includes:
s51: defining a solver, wherein nonlinear statics general analysis is adopted in the tire and rim assembly process and the inflation process;
s52: boundary conditions are defined, including displacement and pressure loading.
6. The simulation modeling method for the assembly process of the all-steel engineering machinery tire and the rim according to claim 1, wherein the method comprises the following steps of: the step S52 includes:
s521: mounting a rim body (4), and temporarily inhibiting a contact pair between the bottom of the movable rim seat ring (2) and the rim body (4);
s522: installing a loose wheel rim seat ring (2), wherein the actual rim width is smaller than the standard rim width;
s523: installing a sealing ring (11), and temporarily inhibiting two contact pairs of the bottom of the movable rim seat ring (2) and the sealing ring (11) and the rim body (4) and the sealing ring (11);
s524: the locking ring (3) is installed and inflated, the bottom of the movable rim seat ring (2) is activated to be in contact with the rim body (4), the bottom of the movable rim seat ring (2) is activated to be in contact with the sealing ring (11), the rim body (4) is activated to be in contact with the sealing ring (11), and uniform pressure load is applied to the inner surface (10) of the tire.
7. A computer device for use in the method of any one of claims 1-6, characterized in that: the system comprises a memory, a processor and a display, wherein the memory stores models and program files, the processor draws and runs the models and the program files in the memory, and the display displays the models and the result files in the memory.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311845187.0A CN117852344A (en) | 2023-12-29 | 2023-12-29 | Simulation modeling method for assembling process of all-steel engineering machinery tire and rim |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311845187.0A CN117852344A (en) | 2023-12-29 | 2023-12-29 | Simulation modeling method for assembling process of all-steel engineering machinery tire and rim |
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| CN117852344A true CN117852344A (en) | 2024-04-09 |
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| CN202311845187.0A Pending CN117852344A (en) | 2023-12-29 | 2023-12-29 | Simulation modeling method for assembling process of all-steel engineering machinery tire and rim |
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| Country | Link |
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| CN (1) | CN117852344A (en) |
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- 2023-12-29 CN CN202311845187.0A patent/CN117852344A/en active Pending
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