CN113821958A - Optimized design method for buffering multi-cellular sole structure - Google Patents
Optimized design method for buffering multi-cellular sole structure Download PDFInfo
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- CN113821958A CN113821958A CN202111145576.3A CN202111145576A CN113821958A CN 113821958 A CN113821958 A CN 113821958A CN 202111145576 A CN202111145576 A CN 202111145576A CN 113821958 A CN113821958 A CN 113821958A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000013461 design Methods 0.000 title claims abstract description 14
- 230000003139 buffering effect Effects 0.000 title description 7
- 210000003850 cellular structure Anatomy 0.000 claims abstract description 19
- 239000007787 solid Substances 0.000 claims abstract description 5
- 238000012933 kinetic analysis Methods 0.000 claims abstract description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 7
- 239000010432 diamond Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000001052 transient effect Effects 0.000 claims description 3
- 230000001413 cellular effect Effects 0.000 claims 1
- 238000005457 optimization Methods 0.000 abstract description 5
- 230000035939 shock Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000254032 Acrididae Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000011160 research Methods 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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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/04—Constraint-based CAD
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- 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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- Computer Hardware Design (AREA)
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The invention discloses an optimization design method of a buffer multi-cellular sole structure, which comprises the following steps: step S1, establishing a three-dimensional solid model of the sole; step S2: filling different types of multi-cell structures into the heel area of the sole to construct the soles with the different types of multi-cell structures; step S3, constructing a finite element model of the multi-cellular structure sole-ground three-dimensional system; step S4, carrying out loading setting on the finite element model of the three-dimensional system, carrying out kinetic analysis and outputting strain energy of the sole; step S5, repeating the steps S3-S4 for the different types of multi-cell structure soles in the step S2 to obtain strain energy data of the different types of multi-cell structure soles; and step S6, comparing the maximum strain energy of the soles with different types of cellular structures to obtain the optimal sole with the cellular structure.
Description
Technical Field
The invention relates to the field of optimization design, in particular to an optimization design method of a buffer multi-cellular sole structure.
Background
The shoes are the most direct contact part of human body and ground impact, and can play the effect of buffering shock attenuation in the process of contacting with ground impact to protect human body from the injury of ground impact. The uniform medium laminated structure has excellent performance in the aspect of buffering and shock absorption, so that the uniform medium laminated structure is filled into the sole, and the research on the buffering and shock absorption performance of the uniform medium laminated structure has very important value and significance.
Disclosure of Invention
The invention aims to solve the main technical problem of providing a method for researching the buffer performance of a sole in the process of impacting the sole with the ground and optimizing the design of the sole with a three-layer uniform medium laminated structure based on a finite element method, and providing theoretical guidance and reference for the manufacturing and the design of the sole.
In order to solve the technical problem, the invention provides an optimal design method of a buffer multi-cellular sole structure, which is characterized by comprising the following steps of:
step S1, establishing a three-dimensional solid model of the sole;
step S2: filling different types of multi-cell structures into the heel area of the sole to construct the soles with the different types of multi-cell structures;
step S3, constructing a finite element model of the multi-cellular structure sole-ground three-dimensional system;
step S4, carrying out loading setting on the finite element model of the three-dimensional system, carrying out kinetic analysis and outputting strain energy of the sole;
step S5, repeating the steps S3-S4 for the different types of multi-cell structure soles in the step S2 to obtain strain energy data of the different types of multi-cell structure soles;
and step S6, comparing the maximum strain energy of the soles with different types of cellular structures to obtain the optimal sole with the cellular structure.
In a preferred embodiment, the step S2 specifically includes:
step S21: constructing multi-cell structures of different lattice types, including Cross type, Diamond type, Grid type, Star type and X type;
step S22: and filling the multi-cell structures with different lattice types into the heel area of the sole by taking the heel area of the sole as an optimized design area to obtain the soles with different types of multi-cell structures.
In a preferred embodiment, the step S3 specifically includes:
step S31: importing the three-dimensional entity model of the multi-cellular structure sole in the step S22 into Abaqus finite element analysis software, and endowing the three-dimensional entity model with material properties and grid dividing units;
step S32: creating a cuboid plate in the Abaqus to simulate the ground, and giving material parameters and dividing grid units to the cuboid plate;
step S33: assembling the cellular structure sole of step S31 and the rectangular parallelepiped plates of step S32 in a relative position to obtain a cellular structure sole-ground system;
step S34: the multi-cellular sole-ground system was subjected to contact and boundary condition setting in ABAQUS.
In a preferred embodiment, the step S4 specifically includes:
step S41, applying load to the finite element model of the multi-cellular structure sole-ground system;
and step S42, performing transient dynamic analysis on the finite element model of the multi-cellular structure sole-ground system in the step S41, and outputting sole strain energy data.
In a preferred embodiment, the step S5 specifically includes:
step S51: respectively obtaining maximum strain energy, maximum stress and maximum displacement data of the soles with various three-layer uniform medium laminated structures;
step S52: and respectively comparing the maximum strain energy, the maximum stress and the maximum displacement data of the soles with various three-layer uniform medium laminated structures to obtain the optimal three-layer uniform medium laminated sole structure.
Compared with the prior art, the invention has the following beneficial effects:
1) different types of multi-cell structures are constructed and filled into the heel area of the sole to obtain the soles with the different types of multi-cell structures;
2) strain energy data of different types of multi-cellular structure soles under heel excitation working conditions are obtained through finite element analysis;
3) strain energy data of different types of soles with the cellular structures are respectively compared, and a sole with the buffering cellular structure and excellent buffering performance is preferably selected;
4) can provide corresponding guide for the design and production of the sole.
Drawings
FIG. 1 is a schematic flow chart of the main steps of the method in the preferred embodiment of the present invention;
FIG. 2 is a diagram of a three-dimensional solid model of a sole before optimization;
FIG. 3(a) is a Cross type multi-cellular structure sole;
FIG. 3(b) is a sole of a Diamond type multi-cellular structure;
FIG. 3(c) is a Grid type multi-cellular structure sole;
FIG. 3(d) is a Star-shaped multi-cellular sole;
FIG. 3(e) is a view of an X-shaped multi-cellular sole;
FIG. 4 is a multi-cellular sole-ground system finite element model;
FIG. 5 is a graph of strain energy for various types of multi-cell soles;
FIG. 6 is a perspective view of an optimized cushioning cellular structure sole.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like, are used in a broad sense, and for example, "connected" may be a wall-mounted connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, and those skilled in the art will understand the specific meaning of the terms in the present invention specifically.
A method for optimally designing a sole with a buffer cellular structure, as shown in fig. 1, comprising:
step S1, establishing a simplified sole three-dimensional solid model before optimization in UG, as shown in FIG. 2;
step S2, filling different types of multi-cellular structures into the heel area of the sole, and constructing the soles with the different types of multi-cellular structures, which specifically comprises the following steps:
step S21: constructing multi-cell structures of different lattice types, including Cross type, Diamond type, Grid type, Star type and X type;
specifically, five lattice types of multi-cell structures with the cell size of 8mm, the rod diameter of 3mm and the length, width and height of 48mm multiplied by 64mm multiplied by 16mm are constructed based on Grasshopper and UG secondary development, and the lattice types comprise Cross type, Diamond type, Grid type, Star type and X type.
Step S22: filling the multi-cell structures with different lattice types into the heel area of the sole by taking the heel area of the sole as an optimized design area to obtain soles with different types of multi-cell structures;
specifically, a Cross type multi-cellular structure sole is shown in fig. 3(a), a Diamond type multi-cellular structure sole is shown in fig. 3(b), a Grid type multi-cellular structure sole is shown in fig. 3(c), a Star type multi-cellular structure sole is shown in fig. 3(d), and an X type multi-cellular structure sole is shown in fig. 3 (e).
Step S3, constructing a finite element model of the multi-cellular structure sole-ground three-dimensional system, which specifically comprises the following steps of;
step S31: importing the three-dimensional entity model of the multi-cellular structure sole in the step S22 into Abaqus finite element analysis software, and endowing the three-dimensional entity model with material properties and grid dividing units;
specifically, the density of the multi-cellular structure sole was set to 1230kg/m3, the modulus of elasticity was set to 4MPa, the Poisson's ratio was set to 0.4, and the mesh size was set to 4 mm.
Step S32: creating a cuboid plate in the Abaqus to simulate the ground, and giving material parameters and dividing grid units to the cuboid plate;
specifically, the ground density was set to 2600kg/m3, the modulus of elasticity was set to 17000MPa, the Poisson's ratio was set to 0.3, and the mesh size was set to 5 mm.
Step S33: assembling the cellular structure sole of step S31 and the rectangular parallelepiped plates of step S32 in a relative position to obtain a cellular structure sole-ground system;
step S34: setting the contact and boundary conditions of the sole-ground system with the multi-cellular structure in ABAQUS;
specifically, the lower surface of the sole of the multi-cellular structure is in surface-to-surface contact with the ground, and the friction coefficient is 0.6; the ground surface constraint is set to be a complete fixed constraint, and a finite element model of the multi-cellular sole-ground system is obtained and is shown in figure 4.
Step S4, the three-dimensional system model is loaded, dynamic analysis is carried out, and strain energy of the sole is output, and the method specifically comprises the following steps:
step S41, applying load to the finite element model of the multi-cellular structure sole-ground system;
specifically, the surface load of the sole with the multi-cellular structure is applied to a heel circular area of the sole, the load type is pressure, and the magnitude of the load is 300N.
And step S42, performing transient dynamic analysis on the finite element model of the multi-cellular structure sole-ground system in the step S41, and outputting sole strain energy data.
Step S5, repeating the steps S3-S4 for the different types of multi-cellular soles in the step S2, and obtaining strain energy data of the different types of multi-cellular soles, as shown in fig. 5;
and S6, comparing the maximum strain energy of the soles with different types of cellular structures to obtain the optimal sole with the cellular structure and the optimal sole with the cellular structure. The optimal multi-cellular structure sole is filled with a multi-cellular structure in the heel area of the sole, the diameter of a rod is 3mm, and the lattice type is Diamond type. The maximum strain energy is about 0.1J, which is about 138% higher than the maximum strain of the original sole of 0.042J, as shown in fig. 6.
The above description is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art can make insubstantial changes in the technical scope of the present invention within the technical scope of the present invention, and the actions infringe the protection scope of the present invention are included in the present invention.
Claims (5)
1. An optimal design method of a buffer cellular sole structure is characterized by comprising the following steps:
step S1, establishing a three-dimensional solid model of the sole;
step S2: filling different types of multi-cell structures into the heel area of the sole to construct the soles with the different types of multi-cell structures;
step S3, constructing a finite element model of the multi-cellular structure sole-ground three-dimensional system;
step S4, carrying out loading setting on the finite element model of the three-dimensional system, carrying out kinetic analysis and outputting strain energy of the sole;
step S5, repeating the steps S3-S4 for the different types of multi-cell structure soles in the step S2 to obtain strain energy data of the different types of multi-cell structure soles;
and step S6, comparing the maximum strain energy of the soles with different types of cellular structures to obtain the optimal sole with the cellular structure.
2. The method as claimed in claim 1, wherein the step S2 specifically includes:
step S21: constructing multi-cell structures of different lattice types, including Cross type, Diamond type, Grid type, Star type and X type;
step S22: and filling the multi-cell structures with different lattice types into the heel area of the sole by taking the heel area of the sole as an optimized design area to obtain the soles with different types of multi-cell structures.
3. The method as claimed in claim 2, wherein the step S3 specifically includes:
step S31: importing the three-dimensional entity model of the multi-cellular structure sole in the step S22 into Abaqus finite element analysis software, and endowing the three-dimensional entity model with material properties and grid dividing units;
step S32: creating a cuboid plate in the Abaqus to simulate the ground, and giving material parameters and dividing grid units to the cuboid plate;
step S33: assembling the cellular structure sole of step S31 and the rectangular parallelepiped plates of step S32 in a relative position to obtain a cellular structure sole-ground system;
step S34: the multi-cellular sole-ground system was subjected to contact and boundary condition setting in ABAQUS.
4. The method as claimed in claim 3, wherein the step S4 specifically includes:
step S41, applying load to the finite element model of the multi-cellular structure sole-ground system;
and step S42, performing transient dynamic analysis on the finite element model of the multi-cellular structure sole-ground system in the step S41, and outputting sole strain energy data.
5. The method as claimed in claim 4, wherein the step S5 specifically includes:
step S51: respectively obtaining maximum strain energy, maximum stress and maximum displacement data of the soles with various three-layer uniform medium laminated structures;
step S52: and respectively comparing the maximum strain energy, the maximum stress and the maximum displacement data of the soles with various three-layer uniform medium laminated structures to obtain the optimal three-layer uniform medium laminated sole structure.
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| CN202111145576.3A CN113821958A (en) | 2021-09-28 | 2021-09-28 | Optimized design method for buffering multi-cellular sole structure |
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| CN202111145576.3A CN113821958A (en) | 2021-09-28 | 2021-09-28 | Optimized design method for buffering multi-cellular sole structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114580041A (en) * | 2022-02-25 | 2022-06-03 | 华侨大学 | Vibration reduction sole structure optimization design method based on variable-size lattice filling |
| CN114722679A (en) * | 2022-04-28 | 2022-07-08 | 华侨大学 | Toe cap and toe cap optimization method based on multi-cell structure |
| CN114970167A (en) * | 2022-05-31 | 2022-08-30 | 华侨大学 | Design method and device for lattice variable density topological optimization structure of inner cavity of sole |
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| CN109662392A (en) * | 2018-12-20 | 2019-04-23 | 上海工程技术大学 | A kind of test method of foot and sole finite element modeling based on landing movement |
| CN112199790A (en) * | 2020-09-29 | 2021-01-08 | 华侨大学 | Sole with regular polyhedron porous heel area filling structure and design method thereof |
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2021
- 2021-09-28 CN CN202111145576.3A patent/CN113821958A/en active Pending
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| CN109662392A (en) * | 2018-12-20 | 2019-04-23 | 上海工程技术大学 | A kind of test method of foot and sole finite element modeling based on landing movement |
| CN112199790A (en) * | 2020-09-29 | 2021-01-08 | 华侨大学 | Sole with regular polyhedron porous heel area filling structure and design method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114580041A (en) * | 2022-02-25 | 2022-06-03 | 华侨大学 | Vibration reduction sole structure optimization design method based on variable-size lattice filling |
| CN114722679A (en) * | 2022-04-28 | 2022-07-08 | 华侨大学 | Toe cap and toe cap optimization method based on multi-cell structure |
| CN114970167A (en) * | 2022-05-31 | 2022-08-30 | 华侨大学 | Design method and device for lattice variable density topological optimization structure of inner cavity of sole |
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Application publication date: 20211221 |