CN113204807A - Design method of heterogeneous material connection structure - Google Patents
Design method of heterogeneous material connection structure Download PDFInfo
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- CN113204807A CN113204807A CN202110502516.6A CN202110502516A CN113204807A CN 113204807 A CN113204807 A CN 113204807A CN 202110502516 A CN202110502516 A CN 202110502516A CN 113204807 A CN113204807 A CN 113204807A
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- 239000000463 material Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000013461 design Methods 0.000 title claims abstract description 12
- 238000004364 calculation method Methods 0.000 claims abstract description 23
- 238000004088 simulation Methods 0.000 claims abstract description 13
- 238000005457 optimization Methods 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000013515 script Methods 0.000 description 1
- 238000012800 visualization 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]
- G06F30/10—Geometric CAD
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
- G06T17/20—Finite element generation, e.g. wire-frame surface description, tesselation
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- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16C—COMPUTATIONAL CHEMISTRY; CHEMOINFORMATICS; COMPUTATIONAL MATERIALS SCIENCE
- G16C60/00—Computational materials science, i.e. ICT specially adapted for investigating the physical or chemical properties of materials or phenomena associated with their design, synthesis, processing, characterisation or utilisation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/06—Multi-objective optimisation, e.g. Pareto optimisation using simulated annealing [SA], ant colony algorithms or genetic algorithms [GA]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/10—Numerical modelling
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/26—Composites
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Abstract
The invention discloses a method for designing a heterogeneous material connection structure, which simplifies the structure according to the characteristics of the heterogeneous connection structure; extracting key parameters of the connecting region, carrying out parametric modeling, and establishing an integral three-dimensional model of the connecting structure; carrying out grid division on the whole three-dimensional model, giving material properties, setting contact properties, defining boundary conditions, and carrying out numerical simulation calculation; analyzing the numerical simulation calculation result, and comparing the numerical simulation calculation result with the test result; if the results are consistent, performing subsequent parametric analysis; if not, correcting corresponding numerical model parameters, carrying out optimization adjustment on the finite element model, and carrying out numerical calculation again until the numerical calculation result is matched with the test result; and carrying out parametric analysis on the finally obtained numerical model, summarizing the influence rule of each parameter on the bearing performance of the heterogeneous material connection structure, and carrying out parameter optimization design on the heterogeneous connection structure. The invention ensures the accuracy of parameter optimization design.
Description
Technical Field
The invention relates to the field of design of a heterogeneous material connection structure, in particular to a design method of a heterogeneous material connection structure.
Background
In many existing analysis and design processes for a heterogeneous material connection structure, basic steps include: feature extraction, three-dimensional modeling, numerical calculation and result analysis. However, most of the steps of feature extraction and three-dimensional modeling are realized by artificial modeling, so that the efficiency is low and the accuracy is poor. How to ensure the accuracy of the numerical model and improve the analysis efficiency is an important premise for carrying out the parameter optimization design of the heterogeneous material connection structure, and is also a difficult problem to be solved urgently at present.
Disclosure of Invention
In order to solve the problems, the invention provides a method for designing a heterogeneous material connection structure, which ensures the accuracy of parameter optimization design.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for designing a heterogeneous material connection structure comprises the following steps:
s1, simplifying the structure according to the characteristics of the heterogeneous connection structure;
s2, extracting key parameters of the connecting region, carrying out parametric modeling, and establishing an integral three-dimensional model of the connecting structure;
s3, carrying out grid division on the whole three-dimensional model, giving material properties, setting contact properties, defining boundary conditions and the like, and carrying out numerical simulation calculation;
s4, analyzing the numerical simulation calculation result, and comparing the numerical simulation calculation result with the test result; if the results are consistent, performing subsequent parametric analysis; if not, correcting corresponding numerical model parameters, carrying out optimization adjustment on the finite element model, and carrying out numerical calculation again until the numerical calculation result is matched with the test result;
and S5, performing parametric analysis on the numerical model finally obtained in the step S4, summarizing the influence rule of each parameter on the bearing performance of the heterogeneous material connection structure, and performing parameter optimization design on the heterogeneous connection structure.
Further, in step S1, the principle of the simplified processing is: the basic geometric features and contact properties of the connection region are preserved.
Further, in step S2, the key parameters of the attachment area include the geometry of the protrusions, the lateral spacing between the protrusions, and the height of the metal base.
Furthermore, in step S4, the consistency of the results indicates that the numerical simulation calculation results and the test results are consistent in terms of the strength of the connection structure, the damage spreading process, the final failure mode, and the like.
Further, in step S5, the load-bearing performance includes strength performance, fracture toughness, fatigue performance, and the like.
The invention has the following beneficial effects:
after the heterogeneous material connection structure is simplified, the modeling efficiency is improved through parametric modeling, the problem possibly caused by manual modeling is avoided, the accuracy of a numerical model is verified through comparison of results of experiments and numerical simulation, and the accuracy of parameter optimization design is further ensured.
Drawings
FIG. 1 is a flow chart of a method for designing a heterogeneous material connection structure.
FIG. 2 is a MATLAB GUI operating interface diagram.
FIG. 3 is a schematic diagram of a unit cell model generated by the ABAQUSTM pre-treatment end.
FIG. 4 is a simplified numerical model diagram of the heterogeneous material connection structure.
In the figure: 1. a metal material; 2. a composite material; 3. a lap joint interface.
Fig. 5 is a graph comparing the results of numerical calculations with the tests.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1-5, the present invention provides a method for designing a heterogeneous material connection structure, which comprises the following steps,
s1, aiming at the characteristics of the metal-composite material roughened connecting structure, simplifying the structure by ABAQUS/CAE, and simplifying the connecting area into orderly lap joint of three materials, namely a metal part, a cohesion unit and a composite material part;
s2, extracting key parameters of the connecting region based on MATLAB GUI, wherein the key parameters comprise main parameters such as burr tooth density, tooth height, tooth shape, interval, arrangement position and the like, carrying out parametric modeling as shown in FIG. 2, and transmitting coordinate points to Python scripts to generate burr tooth unit cells of different types as shown in FIG. 3;
according to different requirements of the textured connecting structure, the unit cells are arranged in a specified direction and sequence to be assembled into an integral three-dimensional model of the textured connecting structure, as shown in FIG. 4.
S3, meshing the three-dimensional model of the textured connection structure based on ABAQUS/Standard and ABAQUS/Explicit, giving material properties, setting contact properties, defining boundary conditions and the like, and performing numerical simulation calculation;
s4, analyzing the numerical calculation results based on ABAQUS/Standard and ABAQUS/Explicit, and comparing with the test results. If the results are consistent, performing subsequent parametric analysis; if the two parameters are not consistent, correcting corresponding numerical model parameters, optimizing and adjusting the finite element model, and performing numerical calculation again until the numerical calculation result is matched with the test result, wherein the consistency of the result means that the connection structure is consistent in the aspects of strength, damage expansion process, final failure mode and the like, as shown in FIG. 5;
s5, carrying out parametric analysis on the numerical model finally obtained in the step S4 based on ABAQUS/Visualization, summarizing the influence rule of each parameter on the bearing performance of the heterogeneous material connection structure, and carrying out parameter optimization design on the heterogeneous connection structure.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (5)
1. A method for designing a heterogeneous material connection structure is characterized by comprising the following steps: the method comprises the following steps:
s1, simplifying the structure according to the characteristics of the heterogeneous connection structure;
s2, extracting key parameters of the connecting region, carrying out parametric modeling, and establishing an integral three-dimensional model of the connecting structure;
s3, carrying out grid division on the whole three-dimensional model, giving material properties, setting contact properties, defining boundary conditions, and carrying out numerical simulation calculation;
s4, analyzing the numerical simulation calculation result, and comparing the numerical simulation calculation result with the test result; if the results are consistent, performing subsequent parametric analysis; if not, correcting corresponding numerical model parameters, carrying out optimization adjustment on the finite element model, and carrying out numerical calculation again until the numerical calculation result is matched with the test result;
and S5, performing parametric analysis on the numerical model finally obtained in the step S4, summarizing the influence rule of each parameter on the bearing performance of the heterogeneous material connection structure, and performing parameter optimization design on the heterogeneous connection structure.
2. The method for designing a heterostructure according to claim 1, wherein: in step S1, the principle of the simplification processing is: the basic geometric features and contact properties of the connection region are preserved.
3. The method for designing a heterostructure according to claim 1, wherein: in step S2, the critical parameters of the attachment area include the geometry of the protrusions, the lateral spacing between the protrusions, and the height of the metal base.
4. The method for designing a heterostructure according to claim 1, wherein: in step S4, the consistency of the results indicates that the numerical simulation calculation results are consistent with the test results in terms of the strength of the connection structure, the damage extension process, and the final failure mode.
5. The method for designing a heterostructure according to claim 1, wherein: in step S5, the load-bearing properties include strength, fracture toughness, and fatigue properties.
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| CN202110502516.6A CN113204807A (en) | 2021-05-08 | 2021-05-08 | Design method of heterogeneous material connection structure |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102799729A (en) * | 2012-07-13 | 2012-11-28 | 北京航空航天大学 | Effective method for quickly eliminating residual stress of heterogeneous component |
| CN109858116A (en) * | 2019-01-18 | 2019-06-07 | 重庆菲斯塔新能源汽车科技有限公司 | A kind of composite material automobile bonnet structure numerical simulation method based on ABAQUS |
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2021
- 2021-05-08 CN CN202110502516.6A patent/CN113204807A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102799729A (en) * | 2012-07-13 | 2012-11-28 | 北京航空航天大学 | Effective method for quickly eliminating residual stress of heterogeneous component |
| CN109858116A (en) * | 2019-01-18 | 2019-06-07 | 重庆菲斯塔新能源汽车科技有限公司 | A kind of composite material automobile bonnet structure numerical simulation method based on ABAQUS |
Non-Patent Citations (2)
| Title |
|---|
| 古波等: "耐火材料微观分析中的随机多面体颗粒模型构建方法" * |
| 库克超: "CFRP/铝合金胶铆混合连接力学性能及疲劳强度分析", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
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Application publication date: 20210803 |