CN108932370B - Method and device for determining patterns of tire - Google Patents
Method and device for determining patterns of tire Download PDFInfo
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- CN108932370B CN108932370B CN201810607969.3A CN201810607969A CN108932370B CN 108932370 B CN108932370 B CN 108932370B CN 201810607969 A CN201810607969 A CN 201810607969A CN 108932370 B CN108932370 B CN 108932370B
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Abstract
The invention discloses a method and a device for determining the pattern of a tire, wherein the method comprises the following steps: determining a first ground pattern for a first tire; determining a first simulated ground pattern corresponding to the first ground pattern; determining a correlation coefficient of the first grounding pattern and the first simulation grounding pattern; determining a second simulated ground contact pattern for a second tire; determining a second ground contact pattern for the second tire based on the correlation coefficient and the second simulated ground contact pattern; obtaining pattern parameters from the second ground pattern; and judging whether the parameters meet second preset requirements, if not, adjusting the parameters according to a second adjustment strategy, and returning to the step of determining the second simulated grounding pattern until the parameters meet the second preset requirements. Because the second simulated grounding pattern is a simulated obtaining process, the iterative modification process of the pattern parameters does not need to change the vulcanizing mold, so that compared with the prior art, the development period of a new product is shortened, and the manufacturing cost of the new product is greatly reduced.
Description
Technical Field
The invention relates to the technical field of tire testing, in particular to a method and a device for determining patterns of a tire.
Background
The tyre version is determined by the tyre construction, formulation and pattern, wherein the pattern of the tyre is determined by the vulcanisation mould used to manufacture the tyre, the different vulcanisation moulds having different patterns.
During the research process of the prior art, the inventor finds that when a new-version tire is developed, repeated experiments are needed to modify the parameters of the tire pattern in order to obtain the tire with optimal performance, and the change of the parameters of the pattern means the modification or replacement of the vulcanization mold, which not only increases the development period of the new product, but also greatly increases the manufacturing cost of the new product.
Disclosure of Invention
In order to solve the above technical problems, embodiments of the present invention provide a method and an apparatus for determining a pattern of a tire, so as to solve the problems existing in the prior art, and the technical solution is as follows:
a method of determining the pattern of a tyre, comprising:
determining a first grounding pattern of a first tire, wherein the structure and the formula of the first tire meet a first adjustment strategy, the first grounding pattern is a part of the first tire, which is in contact with the ground, and the real vehicle test result of the first grounding pattern meets a first preset requirement;
determining a first simulated ground pattern corresponding to the first ground pattern;
determining a correlation coefficient of the first ground pattern and the first simulated ground pattern;
determining a second simulated ground contact pattern for a second tire, the second tire having the same construction and formulation as the first tire, the second tire having a different pattern than the first tire;
determining a second ground contact pattern for the second tire based on the correlation coefficient and the second simulated ground contact pattern;
obtaining parameters of the pattern from the second ground pattern;
and judging whether the parameter meets a second preset requirement, if not, adjusting the parameter according to a second adjustment strategy, and returning to the step of determining the second simulated grounding pattern until the parameter meets the second preset requirement.
Preferably, determining a first simulated ground pattern corresponding to the first ground pattern comprises:
determining a slice cross section of the first ground pattern;
fixing the section cross section by using a section fixing plate, wherein the inner contour of the section fixing plate is consistent with the outer contour of a vulcanization mold for producing the first tire;
scanning the fixed slice cross section to obtain a scanning slice cross section picture;
determining a CAD file corresponding to the cross section picture of the scanning slice;
depicting the structure and the formula of the section cross section in the CAD file to obtain a feedback version model corresponding to the first tire;
and obtaining the first simulated grounding pattern by utilizing a finite element analysis experimental method according to the feedback version model.
Preferably, the slice fixing plate is obtained by printing by using a 3D printing technology and using a PE material as a raw material.
Preferably, the width and the thickness of the slice fixing plate are both not less than 5 mm.
Preferably, determining a first simulated ground pattern corresponding to the first ground pattern comprises:
determining an outer profile of a curing mold that generated the first tire;
printing the outer contour on white paper according to a 1:1 printing ratio;
projecting the outline printed on the white paper onto PE paper;
drawing the outer contour on the PE paper to obtain a drawn outer contour;
overlapping a slice cross-section of the first ground pattern with the delineating outline;
scanning the overlapped slice cross sections to obtain a scanning slice cross section picture;
determining a CAD file corresponding to the cross section picture of the scanning slice;
depicting the structure and the formula of the section cross section in the CAD file to obtain a feedback version model corresponding to the first tire;
and obtaining the first simulated grounding pattern by utilizing a finite element analysis experimental method according to the feedback version model.
An apparatus for determining the pattern of a tyre, comprising:
the ground contact testing system comprises a first determining unit, a second determining unit and a ground contact testing unit, wherein the first determining unit is used for determining a first ground contact pattern of a first tire, the structure and the formula of the first tire meet a first adjustment strategy, the first ground contact pattern is a part of the first tire, which is in contact with the ground, and the real vehicle testing result of the first ground contact pattern meets a first preset requirement;
a second determination unit configured to determine a first simulated ground pattern corresponding to the first ground pattern;
a third determining unit, configured to determine a correlation coefficient between the first ground pattern and the first simulated ground pattern;
a fourth determination unit configured to determine a second simulated ground pattern of a second tire, the second tire having the same structure and formulation as the first tire, the second tire having a different pattern from the first tire;
a fifth determining unit configured to determine a second ground pattern of the second tire based on the correlation coefficient and the second simulated ground pattern;
an obtaining unit, configured to obtain a parameter of the pattern from the second ground pattern;
and the processing unit is used for judging whether the parameter meets a second preset requirement, if not, adjusting the parameter according to a second adjustment strategy, and returning to execute the step of determining the second simulated grounding pattern until the parameter meets the second preset requirement.
Preferably, the second determination unit includes:
a first determination subunit configured to determine a slice cross section of the first ground pattern;
the fixing unit is used for fixing the section cross section by adopting a section fixing plate, and the inner contour of the section fixing plate is consistent with the outer contour of a vulcanization mold for producing the first tire;
the first scanning unit is used for scanning the fixed slice cross section to obtain a scanning slice cross section picture;
the second determining subunit is used for determining a CAD file corresponding to the cross section picture of the scanning slice;
the first drawing unit is used for drawing the structure and the formula of the slice cross section in the CAD file so as to obtain a feedback version model corresponding to the first tire;
and the first calculation unit is used for obtaining the first simulated grounding pattern by utilizing a finite element analysis experimental method according to the feedback version model.
Preferably, the slice fixing plate is obtained by printing by using a 3D printing technology and using a PE material as a raw material.
Preferably, the width and the thickness of the slice fixing plate are both not less than 5 mm.
Preferably, the second determination unit includes:
a third determining subunit for determining the outer profile of a vulcanization mold for generating the first tire;
the printing unit is used for printing the outer contour on white paper according to a 1:1 printing proportion;
a projection unit for projecting the outline printed on the white paper onto PE paper;
the second drawing unit is used for drawing the outer contour on the PE paper to obtain a drawn outer contour;
an overlapping unit for overlapping a slice cross section of the first ground pattern with the delineating outline;
the second scanning unit is used for scanning the overlapped slice cross sections to obtain a scanning slice cross section picture;
a fourth determining subunit, configured to determine a CAD file corresponding to the scan slice cross-section picture;
a third drawing unit, configured to draw the structure and the formula of the slice cross section in the CAD file to obtain a feedback version model corresponding to the first tire;
and the second calculation unit is used for obtaining the first simulated grounding pattern by utilizing a finite element analysis experimental method according to the feedback version model.
According to the technical scheme provided by the embodiment of the invention, when a new version of tire is developed, the structure and the formula of the existing tire are changed to obtain the first tire, the correlation coefficient is obtained through the first grounding pattern and the first simulated grounding pattern of the first tire, then the second simulated grounding pattern of the second tire with the changed pattern, structure and formula is simulated, the second grounding pattern of the second tire is reversely deduced through the second simulated grounding pattern and the correlation coefficient, so that the pattern parameter of the second tire is obtained from the second grounding pattern, and the pattern parameter is continuously and iteratively adjusted in a feedback mode to finally determine the optimal pattern parameter of the second tire. After determining the optimum parameters of the pattern, the vulcanisation mould may be modified or reset accordingly. Because the second simulated grounding pattern is a simulated obtaining process, the iterative modification process of the pattern parameters does not need to change the vulcanizing mold, so that compared with the prior art, the development period of a new product is shortened, and the manufacturing cost of the new product is greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for determining a pattern of a tire according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a method for determining the pattern of a tire according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a slice fixing plate according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a cross section of a fixed slice of a slice fixing plate according to an embodiment of the present invention;
fig. 5 is a schematic flowchart of determining a first simulated ground pattern corresponding to a first map pattern according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an apparatus for determining a pattern of a tire according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a method for determining a pattern of a tire according to an embodiment of the present invention, the method including:
step S101, a first ground pattern of a first tire is determined.
The first tire in the present embodiment is a tire produced from a vulcanizing mold for producing an existing tire after changing the structure and formulation of the existing tire according to the first adjustment strategy, and therefore has the same pattern as the existing tire.
The first ground pattern refers to the portion of the first tire that contacts the ground. Since the portion of the first tire that contacts the ground is not unique, when the first ground contact pattern is selected, it is selected according to the real vehicle test result to satisfy the first preset requirement.
In practical application, the test result of the real vehicle may include brake, vehicle interior and exterior noise and functional test performance.
Step S102, a first simulation grounding pattern corresponding to the first grounding pattern is determined.
The first simulated ground contact pattern is a portion that simulates when the tire is in contact with the ground.
And step S103, determining the correlation coefficient of the first grounding pattern and the first simulation grounding pattern.
The correlation coefficient reflects the degree of deformation of the first tire, which is inevitably deformed due to various factors during use of the first tire.
And step S104, determining a second simulated ground contact pattern of the second tire.
The second tire has the same structure and formula as the first tire, and has a different pattern from the first tire.
And step S105, determining a second grounding pattern of the second tire according to the correlation coefficient and the second simulated grounding pattern.
Since the first tire and the second tire are of the same construction and formulation, the correlation coefficient obtained from the first tire is also adapted to the second tire.
Since the correlation coefficient is determined according to the first ground pattern of the real object and the simulated first simulated ground pattern, the second ground pattern can be reversely deduced when the correlation coefficient and the second simulated ground pattern are known.
And step S106, obtaining pattern parameters from the second grounding pattern.
And S107, judging whether the parameters meet a second preset requirement, and if not, executing the step S108.
And S108, adjusting the parameters according to a second adjustment strategy, and returning to execute the step S104 until the parameters meet a second preset requirement.
The step S104 is executed once every time step S108 is executed, which belongs to one iteration, and the pattern of the second tire in step S104 changes every time iteration is executed.
According to the technical scheme provided by the embodiment of the invention, when a new version of tire is developed, the structure and the formula of the existing tire are changed to obtain the first tire, the correlation coefficient is obtained through the first grounding pattern and the first simulated grounding pattern of the first tire, then the second simulated grounding pattern of the second tire with the changed pattern, structure and formula is simulated, the second grounding pattern of the second tire is reversely deduced through the second simulated grounding pattern and the correlation coefficient, so that the pattern parameter of the second tire is obtained from the second grounding pattern, and the pattern parameter is continuously and iteratively adjusted in a feedback mode to finally determine the optimal pattern parameter of the second tire. After determining the optimum parameters of the pattern, the vulcanisation mould may be modified or reset accordingly. Because the second simulated grounding pattern is a simulated obtaining process, the iterative modification process of the pattern parameters does not need to change the vulcanizing mold, so that compared with the prior art, the development period of a new product is shortened, and the manufacturing cost of the new product is greatly reduced.
Referring to fig. 2, fig. 2 is a schematic flow chart of another method for determining a pattern of a tire according to an embodiment of the present invention, the method including:
step S201, a first ground pattern of the first tire is determined.
The structure and the formula of the first tire meet a first adjustment strategy, the first grounding pattern is a part of the first tire, which is in contact with the ground, and the real vehicle test result of the first grounding pattern meets a first preset requirement.
And S202, determining the slice cross section of the first grounding pattern.
And S203, fixing the cross section of the slice by using a slice fixing plate.
The inner contour of the chip fixing plate is consistent with the outer contour of a vulcanization mold for producing a first tire.
The slice fixing plate is a fixing plate with certain strength, and the cross section of the slice can be ensured not to deform.
In practical application, the slice fixing plate can be made of PE and obtained by printing through a 3D printing technology. In order to keep the fixing strength of the slice fixing plate, the width and the thickness of the slice fixing plate are not less than 5 mm. The present embodiment illustrates the slice fixation plate 301 in fig. 3, while the slice fixation plate 401 in fig. 4 illustrates the slice fixation plate 401 to fix the slice cross-section 401.
And S204, scanning the fixed slice cross section to obtain a scanning slice cross section picture.
And step S205, determining a CAD file corresponding to the cross section picture of the scanning slice.
In step S206, the structure and the formula of the slice cross section are described in the CAD file to obtain a feedback version model corresponding to the first tire.
Step S207, a first simulated grounding pattern is obtained by utilizing a finite element analysis experimental method according to the feedback version model.
Preferably, the steps S202 to S207 are to determine a specific implementation manner of the first simulated ground pattern corresponding to the first ground pattern, and of course, the embodiment of the present invention is not limited to this implementation manner, and any scheme capable of obtaining the first simulated ground pattern by using the first ground pattern may be applied to the present invention.
Optionally, an embodiment of the present invention further provides an implementation manner of determining a first simulated ground graph corresponding to a first map graph, as shown in fig. 5, where the implementation manner includes:
step S501, an outer contour of a vulcanization mold for generating the first tire is determined.
And step S502, printing the outline on the white paper according to the 1:1 printing ratio.
And step S503, projecting the outline printed on the white paper onto the PE paper.
The PE paper has hard transparent properties since the subsequent steps require delineation of the outer contours on the PE paper.
Step S504 is to draw an outer contour on the PE paper to obtain a drawn outer contour.
In practical application, the whole outer contour can be drawn on one side of the hard transparent PE paper by using an oil pen.
Step S505 overlaps the slice cross section of the first ground pattern with the drawing outline.
Because the outer contour of the section cross section of the section is deformed by rubber, the section cross section is not equal to the outer contour of the vulcanization mold (namely, the outer contour is drawn) under the condition without a fixing device, and the section cross section can be specifically overlapped with the outer contour in the following way:
and fixing the tire crown part with the cross section of the section by using double-sided adhesive tape, fixing the tire side part by tying a knot through a shoelace, and fixing the tire bead part by using adhesive tape.
And S506, scanning the overlapped slice cross section to obtain a scanning slice cross section picture.
And step S507, determining a CAD file corresponding to the cross section picture of the scanning slice.
Step S508, a structure and a formula of the slice cross section are drawn in the CAD file to obtain a feedback version model corresponding to the first tire.
Step S509, a first simulated ground pattern is obtained according to the feedback version model by using a finite element analysis experimental method.
In the present embodiment, fixing the sliced sections using the vulcanizing mold is achieved by overlapping the sliced sections with the delineating outer contour.
Step S208, determining the correlation coefficient of the first grounding pattern and the first simulation grounding pattern.
Step S209 determines a second simulated ground contact pattern for the second tire.
The second tire has the same structure and formula as the first tire, and has a different pattern from the first tire.
Step S210, determining a second ground contact pattern of the second tire according to the correlation coefficient and the second simulated ground contact pattern.
And step S211, obtaining pattern parameters from the second grounding pattern.
Step S212, determining whether the parameter meets a second preset requirement, and if not, executing step S213.
And step S213, adjusting the parameters according to the second adjustment strategy, and returning to execute the step S209 until the parameters meet the second preset requirement.
Preferably, steps S201 and S208 to S213 correspond to steps S101 and S103 to S108 of the embodiment corresponding to fig. 1, and thus, for detailed description of steps S201 and S208 to S213, reference may be made to steps S101 and S103 to S108, which is not repeated in this embodiment.
According to the technical scheme provided by the embodiment of the invention, when a new version of tire is developed, the structure and the formula of the existing tire are changed to obtain the first tire, the correlation coefficient is obtained through the first grounding pattern and the first simulated grounding pattern of the first tire, then the second simulated grounding pattern of the second tire with the changed pattern, structure and formula is simulated, the second grounding pattern of the second tire is reversely deduced through the second simulated grounding pattern and the correlation coefficient, so that the pattern parameter of the second tire is obtained from the second grounding pattern, and the pattern parameter is continuously and iteratively adjusted in a feedback mode to finally determine the optimal pattern parameter of the second tire. After determining the optimum parameters of the pattern, the vulcanisation mould may be modified or reset accordingly. Because the second simulated grounding pattern is a simulated obtaining process, the iterative modification process of the pattern parameters does not need to change the vulcanizing mold, so that compared with the prior art, the development period of a new product is shortened, and the manufacturing cost of the new product is greatly reduced. In addition, the slicing fixing plate is adopted to fix the slices, so that the operation is convenient and the accuracy is high; the slice fixing plate is obtained by adopting a 3D printing technology, is made of light PE, and is high in quality and low in price.
Referring to fig. 6, fig. 6 is a structural practical diagram of an apparatus for determining a pattern of a tire according to an embodiment of the present invention, wherein the operation process of each unit in the structural schematic diagram of the apparatus refers to the implementation process of the method in the corresponding embodiment of fig. 1, and the apparatus includes:
the first determining unit 601 is configured to determine a first ground pattern of the first tire.
The structure and the formula of the first tire meet a first adjustment strategy, the first grounding pattern is a part of the first tire, which is in contact with the ground, and the real vehicle test result of the first grounding pattern meets a first preset requirement.
A second determining unit 602, configured to determine a first simulated ground pattern corresponding to the first ground pattern.
Preferably, the second determination unit includes:
a first determining subunit, configured to determine a slice cross section of the first ground pattern;
the fixing unit is used for fixing the cross section of the slice by adopting a slice fixing plate, and the inner contour of the slice fixing plate is consistent with the outer contour of a vulcanization mold for producing a first tire;
the first scanning unit is used for scanning the fixed slice cross section to obtain a scanning slice cross section picture;
the second determining subunit is used for determining a CAD file corresponding to the cross section picture of the scanning slice;
the first drawing unit is used for drawing the structure and the formula of the section cross section in the CAD file so as to obtain a feedback version model corresponding to the first tire;
and the first calculation unit is used for obtaining a first simulated grounding pattern by utilizing a finite element analysis experimental method according to the feedback version model.
Wherein, the slice fixed plate is obtained by printing by using PE material as raw material and adopting 3D printing technology.
The width and the thickness of the slice fixing plate are not less than 5 mm.
Preferably, the second determination unit may also be implemented by the following unit modules:
a third determining subunit for determining the outer profile of the vulcanization mould for generating the first tyre;
the printing unit is used for printing the outer contour on the white paper according to the printing ratio of 1: 1;
a projection unit for projecting the outline printed on the white paper onto the PE paper;
the second drawing unit is used for drawing the outer contour on the PE paper to obtain a drawn outer contour;
an overlapping unit for overlapping the slice cross section of the first ground pattern with the delineation outline;
the second scanning unit is used for scanning the overlapped slice cross sections to obtain a scanning slice cross section picture;
the fourth determining subunit is used for determining a CAD file corresponding to the cross section picture of the scanning slice;
the third drawing unit is used for drawing the structure and the formula of the section cross section in the CAD file so as to obtain a feedback version model corresponding to the first tire;
and the second calculation unit is used for obtaining a first simulated grounding pattern by utilizing a finite element analysis experimental method according to the feedback version model.
A third determining unit 603, configured to determine a correlation coefficient between the first ground pattern and the first simulated ground pattern.
A fourth determining unit 604 for determining a second simulated ground contact pattern for the second tire.
The second tire has the same structure and formula as the first tire, and has a different pattern from the first tire.
A fifth determining unit 605 for determining a second ground contact pattern of the second tire based on the correlation coefficient and the second simulated ground contact pattern.
An obtaining unit 606 is configured to obtain a pattern parameter from the second ground pattern.
And the processing unit 607 is configured to determine whether the parameter meets a second preset requirement, adjust the parameter according to a second adjustment strategy if not, and return to the step of determining the second simulated ground pattern until the parameter meets the second preset requirement.
According to the technical scheme provided by the embodiment of the invention, when a new version of tire is developed, the structure and the formula of the existing tire are changed to obtain the first tire, the correlation coefficient is obtained through the first grounding pattern and the first simulated grounding pattern of the first tire, then the second simulated grounding pattern of the second tire with the changed pattern, structure and formula is simulated, the second grounding pattern of the second tire is reversely deduced through the second simulated grounding pattern and the correlation coefficient, so that the pattern parameter of the second tire is obtained from the second grounding pattern, and the pattern parameter is continuously and iteratively adjusted in a feedback mode to finally determine the optimal pattern parameter of the second tire. After determining the optimum parameters of the pattern, the vulcanisation mould may be modified or reset accordingly. Because the second simulated grounding pattern is a simulated obtaining process, the iterative modification process of the pattern parameters does not need to change the vulcanizing mold, so that compared with the prior art, the development period of a new product is shortened, and the manufacturing cost of the new product is greatly reduced.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
For device or system embodiments, as they correspond substantially to method embodiments, reference may be made to the method embodiments for some of their descriptions. The above-described embodiments of the apparatus or system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
In the several embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways without departing from the spirit and scope of the present invention. The present embodiment is an exemplary embodiment only, and should not be taken as limiting, and the specific contents given should not limit the object of the present invention. For example, the division of the unit or the sub-unit is only one logical function division, and there may be another division manner in actual implementation, for example, a plurality of units or a plurality of sub-units are combined together. In addition, various elements or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented.
Additionally, the systems, apparatus, and methods described, as well as the illustrations of various embodiments, may be combined or integrated with other systems, modules, techniques, or methods without departing from the scope of the invention. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The foregoing is directed to embodiments of the present invention, and it is understood that various modifications and improvements can be made by those skilled in the art without departing from the spirit of the invention.
Claims (10)
1. A method of determining the pattern of a tyre, comprising:
determining a first grounding pattern of a first tire, wherein the structure and the formula of the first tire meet a first adjustment strategy, the first grounding pattern is a part of the first tire, which is in contact with the ground, and the real vehicle test result of the first grounding pattern meets a first preset requirement;
determining a first simulated ground pattern corresponding to the first ground pattern;
determining a correlation coefficient of the first ground pattern and the first simulated ground pattern;
determining a second simulated ground contact pattern for a second tire, the second tire having the same construction and formulation as the first tire, the second tire having a different pattern than the first tire;
determining a second ground contact pattern for the second tire based on the correlation coefficient and the second simulated ground contact pattern;
obtaining parameters of the pattern from the second ground pattern;
and judging whether the parameter meets a second preset requirement, if not, adjusting the parameter according to a second adjustment strategy, and returning to the step of determining the second simulated grounding pattern until the parameter meets the second preset requirement.
2. The method of claim 1, wherein determining a first simulated ground pattern corresponding to the first ground pattern comprises:
determining a slice cross section of the first ground pattern;
fixing the section cross section by using a section fixing plate, wherein the inner contour of the section fixing plate is consistent with the outer contour of a vulcanization mold for producing the first tire;
scanning the fixed slice cross section to obtain a scanning slice cross section picture;
determining a CAD file corresponding to the cross section picture of the scanning slice;
depicting the structure and the formula of the section cross section in the CAD file to obtain a feedback version model corresponding to the first tire;
and obtaining the first simulated grounding pattern by utilizing a finite element analysis experimental method according to the feedback version model.
3. The method of claim 2, wherein the slice fixing plate is made of PE and printed by 3D printing technology.
4. The method of claim 3, wherein the slice fixation plate has a width and a thickness that are each no less than 5 mm.
5. The method of claim 1, wherein determining a first simulated ground pattern corresponding to the first ground pattern comprises:
determining an outer profile of a curing mold that generated the first tire;
printing the outer contour on white paper according to a 1:1 printing ratio;
projecting the outline printed on the white paper onto PE paper;
drawing the outer contour on the PE paper to obtain a drawn outer contour;
overlapping a slice cross-section of the first ground pattern with the delineating outline;
scanning the overlapped slice cross sections to obtain a scanning slice cross section picture;
determining a CAD file corresponding to the cross section picture of the scanning slice;
depicting the structure and the formula of the section cross section in the CAD file to obtain a feedback version model corresponding to the first tire;
and obtaining the first simulated grounding pattern by utilizing a finite element analysis experimental method according to the feedback version model.
6. An apparatus for determining the pattern of a tire, comprising:
the ground contact testing system comprises a first determining unit, a second determining unit and a ground contact testing unit, wherein the first determining unit is used for determining a first ground contact pattern of a first tire, the structure and the formula of the first tire meet a first adjustment strategy, the first ground contact pattern is a part of the first tire, which is in contact with the ground, and the real vehicle testing result of the first ground contact pattern meets a first preset requirement;
a second determination unit configured to determine a first simulated ground pattern corresponding to the first ground pattern;
a third determining unit, configured to determine a correlation coefficient between the first ground pattern and the first simulated ground pattern;
a fourth determination unit configured to determine a second simulated ground pattern of a second tire, the second tire having the same structure and formulation as the first tire, the second tire having a different pattern from the first tire;
a fifth determining unit configured to determine a second ground pattern of the second tire based on the correlation coefficient and the second simulated ground pattern;
an obtaining unit, configured to obtain a parameter of the pattern from the second ground pattern;
and the processing unit is used for judging whether the parameter meets a second preset requirement, if not, adjusting the parameter according to a second adjustment strategy, and returning to execute the step of determining the second simulated grounding pattern until the parameter meets the second preset requirement.
7. The apparatus of claim 6, wherein the second determining unit comprises:
a first determination subunit configured to determine a slice cross section of the first ground pattern;
the fixing unit is used for fixing the section cross section by adopting a section fixing plate, and the inner contour of the section fixing plate is consistent with the outer contour of a vulcanization mold for producing the first tire;
the first scanning unit is used for scanning the fixed slice cross section to obtain a scanning slice cross section picture;
the second determining subunit is used for determining a CAD file corresponding to the cross section picture of the scanning slice;
the first drawing unit is used for drawing the structure and the formula of the slice cross section in the CAD file so as to obtain a feedback version model corresponding to the first tire;
and the first calculation unit is used for obtaining the first simulated grounding pattern by utilizing a finite element analysis experimental method according to the feedback version model.
8. The apparatus according to claim 7, wherein the slice fixing plate is made of PE and printed by 3D printing technology.
9. The apparatus of claim 8, wherein the slice fixation plate has a width and a thickness that are each no less than 5 mm.
10. The apparatus of claim 6, wherein the second determining unit comprises:
a third determining subunit for determining the outer profile of a vulcanization mold for generating the first tire;
the printing unit is used for printing the outer contour on white paper according to a 1:1 printing proportion;
a projection unit for projecting the outline printed on the white paper onto PE paper;
the second drawing unit is used for drawing the outer contour on the PE paper to obtain a drawn outer contour;
an overlapping unit for overlapping a slice cross section of the first ground pattern with the delineating outline;
the second scanning unit is used for scanning the overlapped slice cross sections to obtain a scanning slice cross section picture;
a fourth determining subunit, configured to determine a CAD file corresponding to the scan slice cross-section picture;
a third drawing unit, configured to draw the structure and the formula of the slice cross section in the CAD file to obtain a feedback version model corresponding to the first tire;
and the second calculation unit is used for obtaining the first simulated grounding pattern by utilizing a finite element analysis experimental method according to the feedback version model.
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