CN113806988A - Visual analysis method for vibration energy transfer of sole with lattice structure - Google Patents
Visual analysis method for vibration energy transfer of sole with lattice structure Download PDFInfo
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- CN113806988A CN113806988A CN202111145642.7A CN202111145642A CN113806988A CN 113806988 A CN113806988 A CN 113806988A CN 202111145642 A CN202111145642 A CN 202111145642A CN 113806988 A CN113806988 A CN 113806988A
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Abstract
The invention discloses a visual analysis method for vibration energy transfer of a lattice structure sole, which comprises the following steps of: building three-dimensional solid models of soles with different internal structures by using SOLIDWORKS; establishing a finite element model of the sole model by using ABAQUS and HYPERMESH, and carrying out modal analysis to carry out model reliability verification; carrying out vibration response analysis of different soles through ABAQUS, obtaining dynamic parameters of grid nodes in a model by compiling a PYTHON script, and establishing and calculating a corresponding database; and (3) performing fast Fourier transform and structural sound intensity calculation on the parameters in the database by utilizing a PYTHON language, and reflecting the parameters in the model outline in a form of combining a cloud picture and a vector diagram so as to obtain the dynamic response condition of the sole. The invention can obtain the transmission route of the sole vibration energy and the distribution condition of the vibration source and the vibration sink by a PYTHON language visualization method.
Description
Technical Field
The invention relates to the field of vibration analysis, in particular to a visual analysis method for vibration energy transfer of a lattice structure sole.
Background
The cellular structure is used for the design of the buffering structure of the sole because the cellular structure has excellent buffering and energy absorbing effects. Research shows that the existence of the multi-cell structure can reduce the impact of the foot from the ground, and the effect of buffering and absorbing energy is achieved. Little research has been done on the vibration of multi-cellular soles. In addition, the existing research on the vibration of the foot and the sole mainly adopts a kinematic measurement method, and has various defects, such as long test period, high cost and the like.
Disclosure of Invention
The invention mainly aims to overcome the defects in the prior art and provides a visual analysis method for vibration energy transmission of a sole with a lattice structure.
The invention adopts the following technical scheme: a visual analysis method for vibration energy transfer of a lattice structure sole comprises the following steps:
step S1, establishing an original sole three-dimensional solid model;
step S2, constructing multi-cell structures with different lattice types, and filling the multi-cell structures into heel areas of the soles respectively to obtain multi-cell structure soles with different lattice types;
step S3, performing plantar pressure test on adult males, and analyzing and calculating the obtained plantar pressure distribution;
step S4, constructing a finite element model of the multi-cellular structure sole; applying corresponding numerical values of a plantar pressure test to the central area behind the sole to obtain boundary condition parameters;
step S5, carrying out finite element modal analysis on the finite element model of the multi-cellular structure sole, simultaneously carrying out modal test on the entity model in the same excitation mode on a laboratory bench, and verifying the reliability of the finite element model through comparison analysis;
step S6, performing SET classification on all grid nodes on the upper surface of the sole model in ABAQUS software, and acquiring dynamic parameters such as acceleration, displacement and coordinates of the sole model;
step S7, repeating the steps S3-S6 for the sole with the multi-cellular structure of different lattice types in the step S2 to obtain the kinetic parameters of the sole with the multi-cellular structure of different lattice types;
step S7, establishing ABAQUS script by PYTHON language, classifying the kinetic parameters of the multi-cellular structure soles with different lattice types and establishing a database; reading dynamic parameters of the multi-cell structure soles with different lattice types in a database through a PYTHON language, performing Fourier transform and structural sound intensity calculation, and giving the floating point numerical value with the size and the direction of various tensors to realize visual analysis of vibration energy;
and step S8, generating a data graph combining the vibration energy cloud graph and the vector graph through PYCHARM software.
In a preferred embodiment, the step S2 specifically includes:
step S21: constructing different types of multi-cell structures, including Grid type multi-cell structures, Star type multi-cell structures and X type multi-cell structures;
step S22: and filling different types of multi-cell structures into the heel area of the sole by taking the heel area of the three-dimensional entity model of the original sole as a multi-cell structure filling area to obtain different types of multi-cell structure soles.
In a preferred embodiment, the weight of the adult male in step S3 is 70 kg.
In a preferred embodiment, the step S4 specifically includes:
step S41: importing the multi-cellular structure sole into Abaqus finite element analysis software;
step S42: and applying corresponding numerical values of a plantar pressure test to the central area behind the sole of the multi-cellular structure to obtain the boundary condition parameters.
As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:
the invention provides a visual analysis method for vibration energy transfer of a lattice structure sole, which utilizes PYTHON language to carry out fast Fourier transform and structural sound intensity calculation on parameters in a database, and reflects the parameters in a model outline in a form of combining a cloud picture and a vector diagram so as to obtain the dynamic response condition of the sole. The invention can obtain the transmission route of the sole vibration energy and the distribution condition of the vibration source and the vibration sink by a PYTHON language visualization method. .
Drawings
FIG. 1 is a three-dimensional solid model diagram of a sole;
FIG. 2 is a diagram of a finite element model of a sole;
FIG. 3 is a visualization result of vibration energy of the sole with the multi-cell structure of different lattice types.
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.
Referring to fig. 1-3, a visual analysis method for vibration energy transfer of a lattice-structured sole comprises the following steps:
step S1, establishing an original sole three-dimensional solid model;
step S2, constructing multi-cell structures with different lattice types, and filling the multi-cell structures into heel areas of the soles respectively to obtain multi-cell structure soles with different lattice types;
step S21: constructing different types of multi-cell structures, including Grid type multi-cell structures, Star type multi-cell structures and X type multi-cell structures;
step S22: and filling different types of multi-cell structures into the heel area of the sole by taking the heel area of the three-dimensional entity model of the original sole as a multi-cell structure filling area to obtain different types of multi-cell structure soles.
Step S3, carrying out plantar pressure test on adult males with 70kg body weight, and analyzing and calculating the obtained plantar pressure distribution;
step S4, constructing a finite element model of the multi-cellular structure sole; applying corresponding numerical values of a plantar pressure test to the central area behind the sole to obtain boundary condition parameters;
step S41: importing the multi-cellular structure sole into Abaqus finite element analysis software;
step S42: and applying corresponding numerical values of a plantar pressure test to the central area behind the sole of the multi-cellular structure to obtain the boundary condition parameters.
Step S5, carrying out finite element modal analysis on the finite element model of the multi-cellular structure sole, simultaneously carrying out modal test on the entity model in the same excitation mode on a laboratory bench, and verifying the reliability of the finite element model through comparison analysis;
step S6, performing SET classification on all grid nodes on the upper surface of the sole model in ABAQUS software, and acquiring dynamic parameters such as acceleration, displacement and coordinates of the sole model;
step S7, repeating the steps S3-S6 for the sole with the multi-cellular structure of different lattice types in the step S2 to obtain the kinetic parameters of the sole with the multi-cellular structure of different lattice types;
step S7, establishing ABAQUS script by PYTHON language, classifying the kinetic parameters of the multi-cellular structure soles with different lattice types and establishing a database; reading dynamic parameters of the multi-cell structure soles with different lattice types in a database through a PYTHON language, performing Fourier transform and structural sound intensity calculation, and giving the floating point numerical value with the size and the direction of various tensors to realize visual analysis of vibration energy;
and step S8, generating a data graph combining the vibration energy cloud graph and the vector graph through PYCHARM software.
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 (4)
1. A visual analysis method for vibration energy transfer of a lattice-structured sole is characterized by comprising the following steps of:
step S1, establishing an original sole three-dimensional solid model;
step S2, constructing multi-cell structures with different lattice types, and filling the multi-cell structures into heel areas of the soles respectively to obtain multi-cell structure soles with different lattice types;
step S3, performing plantar pressure test on adult males, and analyzing and calculating the obtained plantar pressure distribution;
step S4, constructing a finite element model of the multi-cellular structure sole; applying corresponding numerical values of a plantar pressure test to the central area behind the sole to obtain boundary condition parameters;
step S5, carrying out finite element modal analysis on the finite element model of the multi-cellular structure sole, simultaneously carrying out modal test on the entity model in the same excitation mode on a laboratory bench, and verifying the reliability of the finite element model through comparison analysis;
step S6, performing SET classification on all grid nodes on the upper surface of the sole model in ABAQUS software, and acquiring dynamic parameters such as acceleration, displacement and coordinates of the sole model;
step S7, repeating the steps S3-S6 for the sole with the multi-cellular structure of different lattice types in the step S2 to obtain the kinetic parameters of the sole with the multi-cellular structure of different lattice types;
step S7, establishing ABAQUS script by PYTHON language, classifying the kinetic parameters of the multi-cellular structure soles with different lattice types and establishing a database; reading dynamic parameters of the multi-cell structure soles with different lattice types in a database through a PYTHON language, performing Fourier transform and structural sound intensity calculation, and giving the floating point numerical value with the size and the direction of various tensors to realize visual analysis of vibration energy;
and step S8, generating a data graph combining the vibration energy cloud graph and the vector graph through PYCHARM software.
2. The visual analysis method for lattice structure sole vibration energy transfer according to claim 1, wherein the step S2 specifically includes:
step S21: constructing different types of multi-cell structures, including Grid type multi-cell structures, Star type multi-cell structures and X type multi-cell structures;
step S22: and filling different types of multi-cell structures into the heel area of the sole by taking the heel area of the three-dimensional entity model of the original sole as a multi-cell structure filling area to obtain different types of multi-cell structure soles.
3. The visual analysis method of lattice structure sole vibration energy transfer according to claim 1, wherein the weight of the adult male in step S3 is 70 kg.
4. The visual analysis method for lattice structure sole vibration energy transfer according to claim 1, wherein the step S4 specifically includes:
step S41: importing the multi-cellular structure sole into Abaqus finite element analysis software;
step S42: and applying corresponding numerical values of a plantar pressure test to the central area behind the sole of the multi-cellular structure to obtain the boundary condition parameters.
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| CN202111145642.7A CN113806988A (en) | 2021-09-28 | 2021-09-28 | Visual analysis method for vibration energy transfer of sole with lattice 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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| WO2000070980A1 (en) * | 1999-05-19 | 2000-11-30 | Blundstone Pty Ltd | Article of footwear |
| CN101727527A (en) * | 2009-12-28 | 2010-06-09 | 中国农业大学 | Method for automatically converting data between dynamics analysis software and finite element analysis software |
| CN111274702A (en) * | 2020-01-20 | 2020-06-12 | 华侨大学 | Design method of sole model with buffer structure in sole heel area |
| CN112674427A (en) * | 2019-10-17 | 2021-04-20 | 清锋（北京）科技有限公司 | Functional unit that 3D printed and sole of using this functional unit |
-
2021
- 2021-09-28 CN CN202111145642.7A patent/CN113806988A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000070980A1 (en) * | 1999-05-19 | 2000-11-30 | Blundstone Pty Ltd | Article of footwear |
| CN101727527A (en) * | 2009-12-28 | 2010-06-09 | 中国农业大学 | Method for automatically converting data between dynamics analysis software and finite element analysis software |
| CN112674427A (en) * | 2019-10-17 | 2021-04-20 | 清锋（北京）科技有限公司 | Functional unit that 3D printed and sole of using this functional unit |
| CN111274702A (en) * | 2020-01-20 | 2020-06-12 | 华侨大学 | Design method of sole model with buffer structure in sole heel area |
Non-Patent Citations (1)
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| 崔强: "参数化设计在工业产品设计中的应用研究" * |
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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