Abstract: Composite materials have wide application prospects in high-end equipment, such as aerospace, watercraft, high-speed train and so forth fields, in view of their advantages of lightweight, high strength, and performance designability. However, current commercial software is mainly focused on single-scale functions, like digital design of composites, overall property prediction, macroscopic response simulations, or structural optimizations. Specifically, when these software is combined to perform multi-scale simulation or optimization problems, including version incompatibility, inconsistent data format and so forth are prone to occur, which makes it quite difficult to satisfy requirements of integrated and innovative design of composite components in high-end equipment. In this paper, a cross-system platform SWJTU-CAX for developing design-simulation-optimization software of composites and structures was designed and developed by combining object-oriented method with modular design ideas. The platform was programmed using cross-system development environment QT and data visualization library VTK as main tools, and adopts data layer, logical processing layer, and presentation layer as overall architecture to deal with core difficulties of data management and processing, functional organization and module expansion, efficient access and visualization of large-scale data in whole process of composite and structure designs, cross-scale simulation, performance prediction, parallel computation and optimization designs. Meanwhile, code organization and functional testing of SWJTU-CAX were carried out using modular approach combined with CMake tool. With help of XML file management, addition and removal of required functional modules are realized conveniently on the proposed platform. Furthermore, rapid integration and expansion of composite and structural design, simulation, optimization and other functional modules can be implemented rapidly. Finally, ceramic composites and components were taken as illustration, and specific software was developed based on SWJTU-CAX platform to realize digital modeling, cross-scale property prediction, response simulation, and integrated optimization design functionals of ceramic composites with arbitrary weaving forms. Feasibility of cross system platform architecture, data organization, and project management method was thus verified. Development of SWJTU-CAX platform provides a powerful tool for in-depth exploration of cross scale failure mechanism of heterogeneous materials and on-demand design as well as service safety evaluation of equipment composite components. Moreover, it provides technical ideas and references for domestic industrial software architecture and research & development.

摘要： 复材因兼具轻质、高强、性能可设计等诸多优点，在宇航、船舶、高铁等领域大型装备中应用前景广阔。当前商业软件多集中于复材数字化设计、性能预测、宏观响应模拟、结构优化等单尺度功能，且多款软件联合使用时易发生版本不兼容、数据格式不互通等问题，难以满足当前高端装备研制对复材-构件-系统一体化按需设计要求。本论文采用面向对象方法和模块化设计思路，设计并自主研发了一款复材与结构设计-仿真-优化软件研发跨系统共性支撑平台：SWJTU-CAX。该平台以跨系统开发环境QT和数据可视化库VTK为基础工具，采用数据层、逻辑处理层和表现层为总体架构，有效地解决了复材及结构设计、跨尺度仿真、性能预测、并行求解和优化设计全过程的数据管理与流转、功能组织与模块拓展、大规模数据高效存取与可视化等核心难点。采用模块化方式和CMake工具进行SWJTU-CAX代码组织与功能测试，通过XML文件管理和增减平台所需的功能模块，实现了复材与结构设计-仿真-优化及其他功能模块的快速集成与拓展。最终，以陶瓷复材及构件为例，采用SWJTU-CAX平台完成任意编织形式陶瓷复材的数字化建模、跨尺度性能预测、响应仿真和结构材料一体化优化设计软件开发，验证了该跨系统平台架构和数据组织及项目管理方式的可行性。SWJTU-CAX平台的开发为深入探究非均质材料跨尺度失效机制和装备-构件-材料一体按需设计及服役安全评价提供了有力工具，为国产工业软件架构和研发提供了技术思路参考。