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Case Details

Aviation industry functional prototype engineering modeling and application project

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ProjectOverview:  Theprojectismainlyappliedtothecustomer'sinformationdepartment.BasedontheadvancedexperienceoftheDepartment'smanyyearsoffunctionalprototypeengineeringmodelingandapplication,thesoftware

  Project Overview:

  The project is mainly applied to the customer's information department. Based on the advanced experience of the Department's many years of functional prototype engineering modeling and application, the software system for supporting aircraft functional prototype engineering modeling and application is established. PDM system integration, realizes batch export of data from PDM, and realizes data update, batch lightweight processing model, lightweight model management, rendering material library data management, application package (such as VR simulation package) construction and management, based on Virtools Model rapid definition, VR-based aircraft overall layout, user role rights management and other functions, meet the following three functional requirements:

  1) Modeling and management of aircraft engine assembly and disassembly use and maintenance function prototype

  2) Modeling and management of aircraft weapon cabin dynamics simulation function prototype

  3) Overall layout of the aircraft based on the VR environment.


  Functional prototype technology is a brand new product development method. It is a digital design method based on product-based computer simulation model. Virtual prototype technology can be used to make product designers, users and manufacturers in the early stage of product development. Intuitive visual design of virtual product prototypes in the virtual environment, performance testing, manufacturing simulation and use simulation, which is very important to enlighten design innovation, improve design quality, reduce design errors, and accelerate product development cycle.

  Since the core PDM system (Windchill) manages the officially released engineering data, the data types (classes and attributes), data structures (BOM structures), and data entities are compared to data for functional prototypes (simulation or analysis). There is a big difference in (lightweight representation of the number model). The data and engineering data of such functional prototypes are related to inheritance and information transfer. Therefore, after discussion and research by the leaders and designers of the information department, it is hoped to build a functional prototype modeling system to complete the functional prototype. In-depth application.

  Project implementation: Through 6 months of implementation and 1 month of training and trials, the functional prototype engineering modeling and application system was successfully launched, and users' praise and praise letters were obtained. The system receives official engineering data issued in the PDM system. The model process obtains lightweight data that can be used for simulation or analysis. After filtering, filtering, and business process processing to simulate BOM and associated additional information, the application for rapid engineering optimization is completed. The generalization of the entire project customization and development is as follows:

  PDM integration: The original model of the digital prototype is mainly from the enterprise PDM (Windchill), through the export interface to the functional prototype application system electronic warehouse area. The functional prototype application system imports the E-BOM from the electronic warehouse area, parses its corresponding CSV file, and prepares the lightweight data conversion for the subsequent guidance, and prepares the system to build the application package.

  Digital Prototyping: E-BOM information and raw digital-to-analog files exported via PDM cannot be directly applied to simulation and analysis software. The digital model file needs to be converted into a lightweight model required for simulation. The model includes different precision cgr, 3dxml and so on. Therefore, when the system receives the engineering data through the integration page, in order to prepare the simulation data in advance, the system needs to call the lightweight conversion tool, realize the digital-to-analog lightweight conversion in the background through the CATIA CAA program, and can manage the model processing task plan in real time. .

  Model processing center: Model processing is to manage the model processing tasks of the default model processing task and simulation package of the digital prototype. You can check whether the model processing is completed, set the priority during processing, and pause and pause for the tasks waiting for processing. Tasks can be recovered. For tasks that have completed processing or failed processing, you can view the model processing report, and restart the model processing if there is a problem with the processing.

  Application package configuration: In order to build simulation resources for different simulation applications, it is necessary to query and filter out the components used for simulation from the digital prototype structure, and send the components to the simulation work package for subsequent processing. The VR simulation package is a work package applied to Virtools simulation. In the VR simulation package, the digital prototype structure and the lightweight digital-analog file sent to the package are edited and processed to generate the simulation resources required by the Virtools application software.

  Basic module configuration: The CAA module is used to complete the model processing tasks, so that each model processing task can add CAA modules as needed to achieve functional scalability; the task type is the business processing type of the system, and there are currently default model processing and simulation packages. Optimize, build top-level physical files, build CI physical files, and more. In the task type, configure which CAA modules are called, and the calling sequence between the modules to complete the business processing; as the digital prototype application develops, it is necessary to continuously expand the component properties of the digital prototype, which complies with this development need. The component attributes can be dynamically added without modifying the code; each simulation software has a corresponding material table. As the business scope expands in the future, the system needs to dynamically support the addition of the material table. After the material table is dynamically generated, the attributes in the table are It can also be expanded as needed to support the development of the business.

  System management: In addition to the application of functional functions, the functional prototype application system also implements different types of operations and maintenance of various parameters for users with different permissions.

  Project Benefits:

  In the past, because there was no corresponding management system and a series of tool software, manual processing was used to prepare lightweight digital models, which was time-consuming, laborious and impossible to prepare in advance.

  So when you build a platform for preparing digital prototypes and managing digital prototypes, you will have the following benefits:

  ■ Establish a collaborative platform from product design to product simulation.

  ■ Improve functional prototype modeling efficiency by more than 60%.

  ■ Greatly improve the quality of simulation data.

  ■ Provides full process management of traceable functional prototypes.

  ■ Form the intellectual property of the Institute.