CN101887476A - Method for forming annular deformation parameterized rubber grid suitable for large deformation - Google Patents
Method for forming annular deformation parameterized rubber grid suitable for large deformation Download PDFInfo
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- CN101887476A CN101887476A CN2010102126379A CN201010212637A CN101887476A CN 101887476 A CN101887476 A CN 101887476A CN 2010102126379 A CN2010102126379 A CN 2010102126379A CN 201010212637 A CN201010212637 A CN 201010212637A CN 101887476 A CN101887476 A CN 101887476A
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Abstract
The invention discloses a method for forming an annular deformation parameterized rubber grid suitable for large deformation. The method comprises the following steps of: sectioning an entire model into a left region, a middle region and a right region; sectioning the left region and the right region which produce large deformation easily and have serious grid distortion into four pentagon-like regions in all; performing parameterized grid setting at each local pentagon-like region; and making the number of grids on each side meet the following requirements: a, b, c, d and e are greater than 0 and e+b is more than or equal to a+2c+d/2, wherein the grid layout and the grid state after the forming of the grid, which meet the requirements of the formula, form the annular pentagon-like deformation rubber grid with different grid densities and the same grid layout through parameterized adjustment of the number of the grids according to the requirements on the size of the model and the analysis quality.
Description
Technical field
The present invention relates to a kind of forming method of rubber, refer in particular to a kind of forming method that can adapt to the full quadrilateral rubber grid of ring type, parametrization of large deformation.Utilize this grid forming method, can carry out the sculpture subdivision to baroque rubber cast, then regional area is carried out based on ring type class 5 distortion under the adaptation large deformation requirement, the generation of parametrization grid, thereby the analysis of finding the solution of large deformation is finished smoothly.
Background technology
The elastomeric material elastic modulus is little, and deflection is big when carrying, the nonlinear degree height.All be to utilize finite element technique that the deformational behavior of elastomeric material (or rubber elastic element) is carried out the emulation match to rubber-moulding now, but by situation about using, when the deformational behavior that utilizes finite element technique to elastomeric material (or rubber elastic element) carries out the emulation match, tend to because distortion is excessive, mesh torsion is serious, perhaps hourglass phenomenon occurs in the analytic process, cause analysis to restrain and make and calculate failure.Therefore, in order to finish analytic process smoothly, need further improve mesh-density, mesh shape and grid forming method.
Summary of the invention
Purpose of the present invention, exactly in order to overcome the deficiency of existing elastomeric material unit grid forming method, a kind of ring type class pentagon distortion that more can adapt to elastomeric material large deformation requirement, reduce mesh torsion and hourglass formation, the forming method of parametrization rubber unit grid are proposed.
The technical solution adopted for the present invention to solve the technical problems is: the forming method of a kind of ring type class pentagon distortion, parametrization rubber unit grid, whole model subdivision is gone out 3 zones, left, center, right, and easy generation large deformation, mesh torsion serious a left side and right 2 zones are carried out totally 4 class pentagon subdivisions, carry out parameterized grid setting in each local class pentagonal regions then, and make every limit number of grid satisfy following requirement:
a，b，c，d，e≥0
Satisfy the grid layout of following formula requirement and the trellis state after the grid moulding, see shown in Figure 1, according to model size with analyze the requirement of quality, can adjust that number of grid forms the mesh-density difference but the rubber grid of the identical ring type class pentagon distortion of grid layout by parametrization.
Rubber grid forming method involved in the present invention, can realize the ring type class pentagon deformation characteristic of rubber grid easily, adapt to the distortion needs of rubber grid under the large deformation condition, and the parametrization that can realize rubber grid easily designs, thereby according to the size of model and the actual condition of analysis, mesh-density to model is optimized the formula adjustment, thereby forms the mesh-density difference but the identical ring type class pentagon distortion rubber grid of grid layout.Its advantage shows as the following aspects:
■ is by using the forming method of this rubber grid, and formed rubber grid shape all is a quadrilateral mesh, the mesh quality height, and stress result is accurate.
■ is by using the forming method of this rubber grid, and the layout of formed rubber grid is 5 distortion of ring type class, the distortion simulation when being easy to the elastomeric material large deformation.
■ is by using the forming method of this rubber grid, and the generation type of rubber grid is parameterized, thereby can parameterized adjustment mesh-density, and keeps the arrangement form and the mesh shape of rubber grid simultaneously.
Description of drawings
Fig. 1 is the process flow diagram of the present invention's's (adapting to the ring type of large deformation, the forming method of parametrization rubber grid) a embodiment;
Fig. 2 is block mold figure of the present invention;
Fig. 3 is a whole subdivision design drawing of the present invention;
Fig. 4 is the grid topological design figure of the class pentagon distortion of regional area of the present invention
Fig. 5 is the pentagonal parametrization of class of the present invention, ring type mesh design figure
Fig. 6 is whole ring type of the present invention, parametrization rubber grid design drawing
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
From accompanying drawing as can be seen, the present invention is a kind of ring type class pentagon distortion of large deformation, forming method of parametrization rubber grid of adapting to, this method is that whole model subdivision is gone out 3 zones, left, center, right, and easy generation large deformation, mesh torsion serious a left side and right 2 zones are carried out totally 4 class pentagon subdivisions, carry out parameterized grid setting in each local class pentagonal regions then, and make every limit number of grid satisfy following requirement:
a，b，c，d，e≥0
Satisfy the grid layout of following formula requirement and the trellis state after the grid moulding, see shown in Figure 1, according to model size with analyze the requirement of quality, can adjust that number of grid forms the mesh-density difference but the rubber grid of the identical ring type class pentagon distortion of grid layout by parametrization.The ring type class pentagon distortion of described adaptation large deformation, the forming method of parametrization rubber grid mainly may further comprise the steps:
Step 2 goes out 3 zones, left, center, right to whole model subdivision, and class 5 limit shape subdivisions are carried out in a left side and the right zone of easy generation large deformation;
Step 3 carries out dividing based on the model of single grid to the shape zone, 4 classes, 5 limit in the model, and promptly each limit produces two unit, and each class 5 deformed region forms 5 unit;
Step 4, based on the parametrization principle, to parameter a, b, c, d, e is provided with, and whole rubber cast forms mesh-density and meets the demands, and the grid layout keeps the grid characteristic of identical ring type class 5 deformation states.
Described class pentagonal regions is ring type class 5 warp meshs, and all the other corner areas are for to be deformed into main cell layout and location mode with 4.
Described rubber cast is provided with unit number in the class pentagonal regions in the parametrization mode, thereby according to the size of model and the actual condition of analysis, mesh-density to model is optimized the formula adjustment, thereby forms the mesh-density difference but the identical ring type class pentagon distortion rubber grid of grid layout type.
Claims (4)
1. one kind adapts to the ring type distortion of large deformation, the forming method of parametrization rubber grid, it is characterized in that: whole model subdivision is gone out 3 zones, left, center, right, and easy generation large deformation, mesh torsion serious a left side and right 2 zones are carried out totally 4 class pentagon subdivisions, carry out parameterized grid setting in each local class pentagonal regions then, and make every limit number of grid satisfy following requirement:
a，b，c，d，e≥0
Satisfy the grid layout of following formula requirement and the trellis state after the grid moulding, according to model size with analyze the requirement of quality, can adjust that number of grid forms the mesh-density difference but the rubber grid of the identical ring type class pentagon distortion of grid layout by parametrization.
2. the ring type distortion of adaptation large deformation as claimed in claim 1, the forming method of parametrization rubber grid is characterized in that: the ring type class pentagon that adapts to large deformation is out of shape, the forming method of parametrization rubber grid mainly may further comprise the steps:
Step 1 is created the model that needs to divide grid, the deformation pattern that the bearer properties of judgment models and rubber cast are possible;
Step 2 goes out 3 zones, left, center, right to whole model subdivision, and class pentagon subdivision is carried out in a left side and the right zone of easy generation large deformation;
Step 3 carries out dividing based on the model of single grid to the shape zone, 4 classes, 5 limit in the model, and promptly each limit produces two unit, and each class pentagon deformed region forms 5 unit;
Step 4, based on the parametrization principle, to parameter a, b, c, d, e is provided with, and whole rubber cast forms mesh-density and meets the demands, and the grid layout keeps the grid characteristic of ring type class pentagon deformation state.
3. the forming method of ring type class 5 distortion as claimed in claim 1, parametrization rubber grid, it is characterized in that: the class pentagonal regions is ring type class 5 warp meshs, and all the other corner areas are for to be deformed into main cell layout and location mode with 4.
4. the forming method of ring type class 5 distortion as claimed in claim 1, parametrization rubber grid, it is characterized in that: rubber cast is provided with unit number in the class pentagonal regions in the parametrization mode, thereby according to the size of model and the actual condition of analysis, mesh-density to model is optimized the formula adjustment, thereby forms the mesh-density difference but the identical ring type class pentagon distortion rubber grid of grid layout type.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102126379A CN101887476A (en) | 2010-06-30 | 2010-06-30 | Method for forming annular deformation parameterized rubber grid suitable for large deformation |
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| CN2010102126379A CN101887476A (en) | 2010-06-30 | 2010-06-30 | Method for forming annular deformation parameterized rubber grid suitable for large deformation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102750409A (en) * | 2012-06-11 | 2012-10-24 | 株洲时代新材料科技股份有限公司 | Mesh layout method for simulating deformation of free surfaces of rubber spherical hinge |
| CN105447232A (en) * | 2015-11-13 | 2016-03-30 | 株洲时代新材料科技股份有限公司 | Grid generating method used for analysis of rubber-metal composite stopper large deformation rubber |
| CN111159954A (en) * | 2020-01-02 | 2020-05-15 | 株洲时代新材料科技股份有限公司 | Free-form surface mesh layout and finite element analysis method, system and medium for elastic element |
-
2010
- 2010-06-30 CN CN2010102126379A patent/CN101887476A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102750409A (en) * | 2012-06-11 | 2012-10-24 | 株洲时代新材料科技股份有限公司 | Mesh layout method for simulating deformation of free surfaces of rubber spherical hinge |
| CN102750409B (en) * | 2012-06-11 | 2015-02-25 | 株洲时代新材料科技股份有限公司 | Mesh layout method for simulating deformation of free surfaces of rubber spherical hinge |
| CN105447232A (en) * | 2015-11-13 | 2016-03-30 | 株洲时代新材料科技股份有限公司 | Grid generating method used for analysis of rubber-metal composite stopper large deformation rubber |
| CN105447232B (en) * | 2015-11-13 | 2018-08-10 | 株洲时代新材料科技股份有限公司 | Grid generation method for the compound backstop large deformation RUBBER ANALYSIS of rubber-metal |
| CN111159954A (en) * | 2020-01-02 | 2020-05-15 | 株洲时代新材料科技股份有限公司 | Free-form surface mesh layout and finite element analysis method, system and medium for elastic element |
| CN111159954B (en) * | 2020-01-02 | 2023-04-14 | 株洲时代新材料科技股份有限公司 | Free-form surface mesh layout and finite element analysis method, system and medium for elastic element |
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Application publication date: 20101117 |