Object modeling-oriented full-life-cycle material library construction and sharing method and object modeling-oriented full-life-cycle material library construction and sharing device

Abstract

The invention provides a full-life-cycle material library construction and sharing method and device for object-oriented modeling, and aims to solve the problem of unified management and sharing of material data. The method comprises the steps that S101, a material body is constructed, and a material entity and material attributes are determined; step S102, integrating the heterogeneous material database, instantiating the material ontology, and constructing a uniform material library based on the material ontology; step S103, carrying out material data statistics and analysis for the full life cycle material to obtain a material selection strategy; and S104, performing material selection evaluation and recommendation based on the material maturity model and data analysis. The method supports the construction of a cross-platform collaborative unified material database based on the material ontology, realizes the full life cycle material selection based on the material maturity model and data analysis, and improves the lookup, accessibility, interoperability and reusability of the material data.

Description

Technical Field

[0001] The present invention relates to the field of material data management, and particularly to a method and device for constructing and sharing a full-life-cycle material library based on object-oriented modeling, which are mainly used for unified modeling, data analysis, and shared use of material data. Background Art

[0002] Material databases are becoming more and more mature in the direction of networking, standardization, integration, intelligence, and commercialization. As a data sharing and data development application platform for material research, production, and application, the material database system has become a basic technology and strategic resource for the technological development of countries around the world, and is playing an increasingly important role. Material data is crucial for the design, manufacture, use, and disposal of products and structures. Although a large amount of high-quality material property data has been generated in current material informatics, these data sets are scattered, usually incomplete, difficult to access and integrate simultaneously, and have limited reusability.

[0003] With the rapid development of China's aircraft research and development level, more and higher requirements are put forward for material properties in aircraft design, modification, and replacement. There is an urgent need for an engineering material database system suitable for the industry characteristics. For this reason, the research and development units have developed material database systems for multiple special projects and played an important role. With the development of the digital age, the current material library management mode and system reveal many drawbacks: First, the availability of material data is scattered and incomplete. Different material databases are often maintained and accessed among different departments, lacking coherent and comprehensive material data, and it is difficult to effectively reuse them throughout the life cycle; Second, a large number of material property measurement results are collected through measurement data for material data. These data are stored in measurement devices, but the same type of material property data has not been integrated, and there is no unified management, analysis, visualization, and storage of data, resulting in the lack of accessibility of effective material data; Third, new materials and new applications are growing explosively. The current material repository has poor scalability, and the cost of maintaining the new properties included in new materials is high, resulting in poor availability of new materials; Fourth, material data has the characteristics of accuracy and diversity. Using data analysis methods and tools is of great significance for the efficient and accurate use of material data. However, material experts often lack ontological methods, and the lack of material ontology development and data analysis support tools hinders the exploration of the potential of material data. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a method and device for constructing and sharing a full-life-cycle material library based on object-oriented modeling, which support the unified modeling, data analysis, and shared use of material data throughout the life cycle, and realize the findability, accessibility, interoperability, and reusability of material data.

[0005] The technical solution of the present invention is as follows: A method for constructing and sharing a full-life-cycle material library for object-oriented modeling, comprising the following steps:

[0006] Step S101: Construct a material ontology, and determine material entities and material attributes;

[0007] Step S102: Integrate heterogeneous material databases to construct a unified material library;

[0008] Step S103: Conduct material data statistics and analysis for full-life-cycle materials to obtain material selection strategies;

[0009] Step S104: Conduct material selection evaluation and recommendation based on a material maturity model and data analysis.

[0010] An apparatus for constructing and sharing a full-life-cycle material library for object-oriented modeling, comprising:

[0011] A material data structure definition module, used to create a material data structure, including: providing material classification management, supporting the creation of a material data structure, and providing a flexible material attribute template configuration function;

[0012] A material general attribute management module, used to define material general attributes, including: managing common material attributes, including common varieties, specifications, technical standards, and supplier information, capable of defining different material attribute templates according to the characteristics of material data, and inserting pre-defined material attributes into the templates;

[0013] A unified material library management module, used to maintain heterogeneous material library instances, including material basic data management, material instance directory management, and material selection scope management;

[0014] A data analysis module, used for material data query and analysis, including analyzing the obtained material information of aircraft models and sorties, which is carried out in three dimensions, so as to obtain: statistics on product material selection situations, statistics on which products the materials are cited by, and summary statistics on the materials selected for different part types;

[0015] A data evaluation module, used for material selection, including: establishing a material data evaluation system, based on the evaluation system, based on the classification of material library data usage, establishing a material selection maturity model; grading based on the material data analysis results, establishing a material performance maturity model; predicting data trends according to the full-process data analysis results, providing data comparison and summary functions; providing a material selection guide and material usage conclusion based on the full life cycle according to the material usage maturity data at different stages.

[0016] Compared with the prior art, the present invention includes the following beneficial effects:

[0017] A method and device for constructing and sharing a full-life-cycle material library for object-oriented modeling provided by the present invention, on the one hand, constructs a unified material library based on a material ontology, establishes a cross-platform collaborative material database, realizes the integration of heterogeneous material library data, supports the two-way flow and collaborative management of material data between the main engine factory and the finished product supporting manufacturers; on the other hand, selects materials throughout the life cycle based on a material maturity model and data analysis, constructs a material selection maturity model, and can provide material selection guidelines and material usage conclusions based on the full life cycle based on the data comparison and analysis of the unified material library, greatly improving the reusability of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a flowchart of a method for constructing and sharing a full-life-cycle material library for object-oriented modeling provided by the present invention;

[0019] Figure 2 is a schematic diagram of material classification and classification code encoding rules;

[0020] Figure 3 is a schematic diagram of metal property classification;

[0021] Figure 4 is a schematic diagram of the initialization process of a material library based on a material ontology;

[0022] Figure 5 is a schematic diagram of the material code mapping relationship between the main engine institute and the main engine factory;

[0023] Figure 6 is a schematic diagram of the material data statistics and analysis process;

[0024] Figure 7 is a schematic diagram of typical scenarios for material data analysis and mining;

[0025] Figure 8 is a schematic diagram of material maturity calculation;

[0026] Figure 9 is a schematic diagram of material selection analysis for an airfoil structural component;

[0027] Figure 10 is a structural block diagram of a device for constructing and sharing a full-life-cycle material library for object-oriented modeling provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] The present invention realizes a method and device for constructing and sharing a full - life - cycle material library for object - oriented modeling. To make the above - mentioned objects, features, and advantages of the present invention more obvious and understandable. The following embodiments are the implementation processes based on the technical solutions of the invention, and detailed implementation manners and specific implementation processes are given. However, the protection scope of the present invention is not limited to the following embodiments.

[0030] See Figure 1 , which is a flowchart of an embodiment of a method for constructing and sharing a full - life - cycle material library for object - oriented modeling provided by the present invention. Taking the material selection in the design stage of an airfoil structural component as an example, the method will be described in combination with Figure 1 As follows. As Figure 1 shown, the method includes the following steps:

[0031] S101: Construct a material ontology, and determine material entities and material attributes.

[0032] Step S101 may include:

[0033] Construct materials, material attributes, and their classifications, and clarify the concepts and hierarchical relationships in the material field;

[0034] Create a material data structure for material entities;

[0035] Construct the mapping relationship between material attributes and materials;

[0036] Initialize the material library based on the material data structure.

[0037] According to the relevant material standards and the requirements of material data classification in design, material attribute classification includes main categories and sub - classifications. The main categories include airframe materials, auxiliary materials, and finished materials. The sub - classifications include metal materials, non - metal materials, and composite materials. The material categories can be flexibly configured and added according to requirements.

[0038] Each material corresponds to a unique code. The material information is digitally expressed through the code, which supports the identification and use of material data in the processes of product design, process design, and material quota compilation. The material coding rule is based on different attributes such as the selected material type, material grade, material variety, material supply state, material specification, material technical standard, and material manufacturer. The codes corresponding to different attributes are automatically combined to form a material instance code. The material code is a total of 12 digits, which are composed of a type code, a grade code, a variety code, a state code, a specification code, a standard code, a manufacturer code, and a spare code, a total of 12 - digit codes. As Figure 2 shown. Figure 2 is a schematic diagram of the material classification and classification code coding rule. A material instance at least includes basic material information such as material type, material grade, material variety, material specification, material state, standard, and manufacturer.

[0039] Figure 2 The interpretations of each material classification code shown are presented in Table 1 as follows.

[0040] Table 1 Interpretations of Material Numbers

[0041] Material information content varies according to its own category and performance parameters, and different materials have different attributes. Common attributes are sorted out according to material classification, such as Figure 3 shown as the attribute classification included in metal materials.

[0042] The attributes of metal materials at least include overview, physical and chemical properties, mechanical properties, endurance and creep properties, fatigue properties, elastic properties, fracture properties, processing properties and requirements, organizational structure, etc.

[0043] Create a data structure for the material entity, including information such as name, type, classification code, version, etc.; associate material attributes with the material entity; initialize the material library based on the configured material data structure, as Figure 4 shown, Figure 4 is a schematic diagram of the initialization process of the material library based on the material ontology.

[0044] S102: Integrate heterogeneous material databases, instantiate the material ontology, and build a unified material library based on the material ontology.

[0045] This step may include:

[0046] Input of material instances and automatic coding;

[0047] Accept heterogeneous data from different sources and in different forms, and establish a cross-platform collaborative material database;

[0048] Collect information on material performance attributes;

[0049] Build a material selection catalog;

[0050] Provide an application programming interface (API) for external access to material data.

[0051] Input material instances such as T300 / HD03 and high-strength aluminum alloy, and perform automatic coding on the material instances. At the same time, establish a mapping relationship of material codes between the main engine factory and the supporting factories, as Figure 5 shown, Figure 5 is a schematic diagram of the mapping relationship of material codes between the main engine institute and the main engine factory.

[0052] Accept heterogeneous data from different sources and in different forms, and establish a cross-platform collaborative material database, including: establishing a coding mapping rule between a specific material database and a unified material library, and performing similarity matching based on the key fields of material data to establish automatic conversion and mapping of material codes, thereby establishing a cross-platform collaborative material database.

[0053] By performing similarity matching on key attribute fields, extract the codes of the unified materials from the host institute and downstream manufacturers and suppliers, establish a mapping relationship between the codes, integrate with the material libraries within the CAMS material library (airframe materials) and Winchill (auxiliary materials), and accept various types of material data from the host factory, supporting factories, etc., to establish a cross-platform collaborative material database.

[0054] The material selection catalog is used as a reference for material selection by departments such as design institutes, process departments, and material quota groups, and is used for controlling material usage permissions based on models. The construction methods include generating based on the configuration of existing models and adding single / multiple increments. For the model where the airfoil structural component is located, select the materials that can be used in this model from the unified material library to form a material selection catalog.

[0055] S103: Conduct material data statistics and analysis for materials throughout the life cycle to obtain material selection strategies;

[0056] This step may include:

[0057] Collect product material data and count the material usage information of product batches;

[0058] Conduct comparative analysis of material data;

[0059] Explore data characteristics and rules to obtain the analysis of material data usage throughout the life cycle;

[0060] Perform material property calculation and analysis.

[0061] Collect product material data and count the material usage information of product batches, including: obtaining material report data from the design bill of materials EBOM or the actual bill of materials BBOM according to the product batch and frame number, and counting the material usage from the dimensions of product structure, material type, and product type respectively. Integrate with PDM, XBOM, and the material single-machine status tracking and control system, obtain material report data from EBOM or BBOM according to the model and frame number, and compare the differences between the design material selection and the actual production material selection, as well as the differences between the design material selection, production material selection, and the material selection catalog. Conduct data statistics and analysis from different dimensions of the product view, material view, and product type view Figure 3 for statistical and analytical purposes. Figure 6 It is a schematic diagram of the material data statistics and analysis process. Figure 6The screenshots herein are used to show the steps of obtaining material report data from the EBOM / BBOM, and are not intended to show the detailed data on the screen.

[0062] The comparative analysis of material data includes: obtaining over-selection in design material selection by comparing the EBOM and the material selection catalog, and obtaining over-selection and modification in production material selection by comparing the EBOM and the BBOM.

[0063] The comparative analysis of material data also includes: analyzing from the dimensions of product structure, material type, and product type according to the usage scenarios and material data usage requirements at different stages, forming analysis records and rules, and storing relevant conclusions and rule information in a structured manner.

[0064] The comparative analysis of material data includes: counting the material usage according to the product structure, counting the material usage according to the part type, calculating the material usage according to the data and the single-piece weight, the usage of a specific type of material data in different product structures of the aircraft, and checking the application trend of a certain material in different aircraft of the same model, etc.

[0065] Mining data features and rules to obtain the analysis of material data usage throughout the life cycle. Through statistical analysis of the material attribute fields, the following features and rules are obtained: counting the material usage according to the product structure, counting the material usage according to the part type, calculating the material usage according to the data and the single-piece weight, the usage of a specific type of material data in different product structures of the aircraft, and checking the application trend of a certain material in different aircraft of the same model, etc. Figure 7 is a schematic diagram of typical scenarios for material data analysis and mining;

[0066] Through material property calculation, calculate the base value of material data and the Cv value of material performance stability. The integration with design analysis tools is mainly the integration with analysis tools such as the strength calculation tools Nastran and Abaqus. The material library provides the interface data of all material attributes required by the analysis tools and maintains relevant material performance analysis data.

[0067] S104: Conduct material selection evaluation and recommendation based on the material maturity model and data analysis.

[0068] This step may include:

[0069] Construct a material maturity model;

[0070] Construct a material engineering selection evaluation model;

[0071] Obtain the current material usage context information;

[0072] Analyze and evaluate alternative materials through the material maturity model and the material engineering selection evaluation model, and provide material selection guidelines and material usage conclusions.

[0073] In one embodiment, the material maturity model includes a material selection maturity model and a material property maturity model.

[0074] Construct a material maturity model, classify the results of material data analysis, and establish a material property maturity model. For a certain type of material, such as airframe materials, auxiliary materials, etc., define different maturity evaluation technical factors, determine the weight ratio of each technical factor, call the maturity evaluation standard, and calculate the material maturity level. Figure 8 It is a schematic diagram of material maturity calculation.

[0075] Let the material maturity level be MM, the technology evaluation level be TRL, and the weight ratio of the technical factor be The formula for calculating the material maturity level is as shown in Equation 1:

[0076] ,

[0077] where, is the number of technical factors, is the current count, representing the kth technical factor.

[0078] The evaluation dimensions in the construction of the material engineering selection evaluation model include material properties, technology maturity, supportability, economic affordability, material selection strategy, etc. The evaluation criteria for each dimension are defined to form an evaluation model.

[0079] For an airfoil structural component, obtain the design requirements of the part, including material density , material yield strength , material elastic modulus . According to the full-process data analysis results, predict the trend of material data adoption, and obtain the alternative material dataset {T300 / HD03, T700 / HD03, carbon / titanium super-hybrid composite, T300 / 4211, T700 / 4211, high-strength glass fiber / 4211, high-strength aluminum alloy} for the airfoil structural component. According to the material selection maturity data at different stages, comprehensively consider factors such as the performance applicability, technology maturity, supportability, economic affordability, and usage rules of the materials, and finally calculate that the optimal choice is T300 / HD03. Figure 9 It is a schematic diagram of material selection analysis for an airfoil structural component.

[0080] The constructed unified material library can be integrated with the PDM system to obtain information such as the selection, change, and deviation of component materials; integrated with the enterprise ERP to obtain supplier material information and material master data; integrated with the single-machine status tracking and control system for materials to obtain single-machine status information of materials; integrated with the xBOM system to obtain material production and usage data; integrated with CAD software to provide selection range data, provide various design modes such as main material, auxiliary material, and composite material parameters, and provide material selection verification; integrated with CAE software to provide material parameter information.

[0081] In summary, the method for constructing and sharing a highly available full-life-cycle material library of the present application constructs a unified material library that supports the integration and collaboration of heterogeneous material libraries through the construction of a material ontology, analyzes the usage of materials throughout the life cycle to obtain material selection rules, predicts the trend of material data adoption, and faces the material usage requirements in the full life cycle. Based on the maturity of materials in each stage and the evaluation of various factors, the material data is compared and summarized to provide material selection guidelines and material usage conclusions. Therefore, the method for constructing and sharing a highly available full-life-cycle material library described in the present application can solve problems such as the unified modeling, data analysis, and shared usage of material data, and accurately and efficiently use material data.

[0082] Based on the description of the above method embodiments, the present application also provides corresponding embodiments of a full-life-cycle material library construction and sharing device. Figure 10 It is a structural block diagram of a full-life-cycle material library construction and sharing device provided by the present invention. The full-life-cycle material library construction and sharing device realizes the unified management and shared usage of material data, and includes the following modules:

[0083] The material data structure definition module is used to create a material data structure, including: providing material classification management, supporting the creation of a material data structure, and providing a flexible material attribute template configuration function.

[0084] The material general attribute management module is used to define material general attributes, including: managing common material attributes such as common varieties, specifications, technical standards, suppliers, etc., and being able to define different material attribute templates according to the characteristics of material data and insert pre-defined material attributes into the templates.

[0085] The unified material library management module is used to maintain heterogeneous material library instances, including material basic data management, material instance directory management, and material selection range management. Material basic data management supports the exchange of material data such as airframe materials, auxiliary materials, and finished materials from heterogeneous material databases; material instance directory management supports the derivation of material instance data based on material grades; material selection range management supports the formation of a selection directory document according to the selection range.

[0086] The data analysis module is used for material data query and analysis, including: analysis of the acquired material model and material information, mainly divided into three dimensions, to obtain: statistics on product material selection, statistics on which products the materials are cited by, and summary statistics on the selection of materials for different parts types. It supports performance data calculation, and has Cv value, data base value calculation function and statistical calculation interface.

[0087] The data evaluation module is used for material selection, including: establishing a material data evaluation system, and establishing a material selection maturity model based on the evaluation system and the classification of material library data usage. Grading is performed based on the material data analysis results, and a material performance maturity model is established; based on the full process data analysis results, data trends are predicted, and data comparison and summary functions are provided; based on the material usage maturity data at different stages, a material selection guide and material use conclusion based on the entire life cycle are provided.

[0088] The material data structure definition module and the material general property management module provide configurable data structures for the unified material library management module, which manages and integrates heterogeneous material data, and provides data support for the data analysis module and the data evaluation module to select and share materials. As a cross-platform collaborative material database, the full life cycle material library construction and sharing device will be integrated with the relevant business systems and tools of the host institute, host factory, and supporting factory to realize the two-way flow and collaborative management of material data, and realize the docking and connection of material design information and production application data.

[0089] In summary, the full life cycle material library construction and sharing device applied in the present invention completes the cross-platform material data definition, establishes a unified data structure, and forms a unified material database for cross-platform collaboration. Through the collection of full life cycle material data, basic data is provided for functions such as material application data analysis and mining, and a multi-dimensional material data evaluation tool is used. Based on the material maturity model and data analysis, a material selection guide and material use conclusion based on different data characteristics (main, auxiliary, functional) are provided, which improves the searchability, accessibility, interoperability and reusability of material data.

Claims

1. A method for constructing and sharing a full-life-cycle material library for object-oriented modeling, characterized in that It includes the following steps: Step S101: Construct a material ontology, determine material entities and material attributes; Step S102: Integrate heterogeneous material databases, instantiate the material ontology, and construct a unified material library based on the material ontology; Step S103: Conduct material data statistics and analysis for materials throughout the life cycle to obtain material selection strategies; Step S104: Conduct material selection evaluation and recommendation based on the material maturity model and data analysis.

2. A method for constructing and sharing a full-life cycle material library for object-oriented modeling according to claim 1, characterized in that The said Step S101 includes: Construct materials, material attributes and their classifications, and clarify the concepts and hierarchical relationships in the material field; Create a material data structure for material entities; Construct the mapping relationship between material attributes and materials; Initialize the material library based on the material data structure.

3. A method for constructing and sharing a full - life - cycle material library for object - oriented modeling according to claim 1, characterized in that, The said Step S102 includes: Input of material instances and automatic coding; Accept heterogeneous data from different sources and in different forms, and establish a cross-platform collaborative material database; Collect information on material performance attributes; Construct a material selection catalog; Provide an application programming interface API for external access to material data.

4. A method for constructing and sharing a full - life - cycle material library for object - oriented modeling according to claim 1, characterized in that, The said Step S103 includes: Collect product material data and count the material usage information of product batches; Comparative analysis of material data; Mine data features and rules to obtain the analysis of material data usage throughout the life cycle; Calculation and analysis of material performance.

5. A method for constructing and sharing a full-life cycle material library for object-oriented modeling according to claim 1, characterized in that, The said Step S104 includes: Construct a material maturity model; Construct a material engineering selection evaluation model; Obtain the current material usage context information; Analyze and evaluate alternative materials through the material maturity model and the material engineering selection evaluation model, and provide material selection guidelines and material usage conclusions.

6. A method for constructing and sharing a full-life-cycle material library for object-oriented modeling according to claim 2, characterized in that Material attribute classifications include main categories and sub-classifications. The main categories include body materials, auxiliary materials, and finished materials. The sub-classifications include metallic materials, non-metallic materials, and composite materials.

7. A method for constructing and sharing a full-life cycle material library for object-oriented modeling according to claim 2, characterized in that Materials correspond to a unique material code. The material code is a total of 12 digits and is composed of a type code, a brand code, a variety code, a status code, a specification code, a standard code, a manufacturer code, and a spare code.

8. A method for constructing and sharing a full - life - cycle material library for object - oriented modeling according to claim 7, characterized in that, The material coding rule is that based on different attributes of the selected material type, material brand, material variety, material supply status, material specification, material technical standard, and material manufacturer, the codes corresponding to different attributes are automatically combined to form the material code.

9. A method for constructing and sharing a full-life cycle material library for object-oriented modeling according to claim 2, characterized in that The attributes of metallic materials at least include overview, physical and chemical properties, mechanical properties, creep and rupture properties, fatigue properties, elastic properties, fracture properties, processing properties and requirements, and microstructure.

10. A method for constructing and sharing a full-life-cycle material library for object-oriented modeling according to claim 3, characterized in that, Material instances at least include material type, material brand, material variety, material specification, material status, standard, and basic manufacturer material information.

11. A method for constructing and sharing a full-life-cycle material library for object-oriented modeling according to claim 3, characterized in that Accepting heterogeneous data from different sources and in different forms to establish a cross-platform collaborative material database includes: establishing a coding mapping rule between a specific material database and a unified material library, and performing similarity matching according to the key fields of material data to establish automatic conversion and mapping of material codes, thereby establishing a cross-platform collaborative material database.

12. A method for constructing and sharing a full-life cycle material library for object-oriented modeling according to claim 3, characterized in that, The construction method of the model selection catalog includes generation based on the configuration of existing models and single or multiple incremental additions.

13. A method for constructing and sharing a full-life-cycle material library for object-oriented modeling according to claim 4, characterized in that Collect product material data and count the material usage information of product batches, including: obtaining material report data from the design bill of materials (EBOM) or the built bill of materials (BBOM) according to the product batch and rack number, and statistically analyzing the material usage from the dimensions of product structure, material type, and product type respectively.

14. A method for constructing and sharing a full - life - cycle material library for object - oriented modeling according to claim 4, characterized in that Material data comparison and analysis include: obtaining design material selection over-selection by comparing EBOM and the material selection catalog, and obtaining production material selection over-selection and production material selection modification by comparing the design bill of materials (EBOM) and the built bill of materials (BBOM).

15. A method for constructing and sharing a full-life-cycle material library for object-oriented modeling according to claim 4, characterized in that Material data comparison and analysis include: analyzing from the dimensions of product structure, material type, and product type according to the usage scenarios and material data usage requirements at different stages, forming analysis records and rules, and structurally storing relevant conclusions and rule information.

16. A method for constructing and sharing a full-life-cycle material library for object-oriented modeling according to claim 4, characterized in that Scenarios of material data comparison and analysis include: counting material usage according to product structure, counting material usage according to part type, calculating material usage according to data and single-piece weight, the usage of a specific type of material data in different product structures of an aircraft, and viewing the application trend of a certain material in different racks of the same aircraft model.

17. A method for constructing and sharing a full-life-cycle material library for object-oriented modeling according to claim 5, characterized in that Material maturity includes the material selection maturity model and the material performance maturity model.

18. A method for constructing and sharing a full - life - cycle material library for object - oriented modeling according to claim 5, characterized in that, Let the material maturity level be MM, the technology readiness level be TRL, and the weight ratio of technical factors be , and the calculation formula for the material maturity level is as follows: ， Among them, is the number of technical factors, is the current count, representing the k-th technical factor.

19. A method for constructing and sharing a full-life-cycle material library for object-oriented modeling according to claim 5, characterized in that The material engineering selection evaluation dimensions in the material engineering selection evaluation model include material performance, technology maturity, supportability, economic affordability, and material selection strategy.

20. A method for constructing and sharing a full-life cycle material library for object-oriented modeling according to claim 5, characterized in that, Integrate the unified material library with the PDM system to obtain information on component material selection, modification, and deviation; integrate with the enterprise ERP to obtain supplier material information and material master data; integrate with the material single-unit status tracking and control system to obtain material single-unit status information; integrate with the xBOM system to obtain material production and usage data; integrate with CAD software to provide selection range data, provide multiple design modes for main materials, auxiliary materials, and composite material parameters, and provide material selection verification; Integrate with CAE software to provide material parameter information.

21. An apparatus for constructing and sharing a full - life - cycle material library for object - oriented modeling, characterized in that, Include: The material data structure definition module is used to create a material data structure, including: providing material classification management, supporting the creation of a material data structure, and providing a flexible material attribute template configuration function; The material general attribute management module is used to define material general attributes, including: managing common material attributes, including common varieties, specifications, technical standards, and supplier information, being able to define different material attribute templates according to the characteristics of material data, and inserting pre-defined material attributes into the templates; The unified material library management module is used to maintain heterogeneous material library instances, including material basic data management, material instance catalog management, and material selection range management; The data analysis module is used for material data query and analysis, including analyzing the material information of the aircraft model and rack number obtained, which is carried out in three dimensions, so as to obtain: statistics on product material selection, statistics on which products use the material, and summary statistics on the material selection of different part types; A data evaluation module for material selection, including: establishing a material data evaluation system, based on the evaluation system, classifying the use of data in the material library to establish a material selection maturity model; grading based on the analysis results of material data to establish a material performance maturity model; predicting data trends according to the analysis results of the whole-process data, providing data comparison and summary functions; providing a material selection guide and material usage conclusion based on the whole life cycle according to the material usage maturity data at different stages.

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