Function-driven design and simulation methods for hierarchical multi-material structures fabricated via additive manufacturing processes

通过增材制造工艺制造的分层多材料结构的功能驱动设计和仿真方法

• 批准号: RGPIN-2018-05971
• 负责人: Zhao, Yaoyao
• 金额: $ 3.35万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=760320
• 关键词: Function; driven; design; simulation; methods

Additive Manufacturing (AM) is defined by the American Society of Testing Materials (ASTM) as a class of manufacturing methods to build s 3D objects by adding materials typically in a layer-upon-layer manner. They have unique advantages over other manufacturing methods such as the capability to fabricate objects with complex shapes, made of heterogeneous materials with varying material properties. The capability of AM methods greatly enhances freedom for designers to explore novel engineered products for a variety of new applications. In fact, AM technologies have created a new paradigm in manufacturing by enabling the creation of cost effective high value products. However, there is no valid design method to encourage function integration at early design stage. Moreover, existing geometric modeling methods, such as parametric boundary representation or solid modeling techniques developed to represent relatively simple geometries for conventional manufacturing processes, are no longer capable to represent sufficient information for AM design. There is an urgent need for innovative design methods and better computer-aided design tools to support the realization of novel products using AM methods.The proposed research program aims to establish a function-drive design and simulation platform that is capable of designing, modeling, and simulating hierarchical structures with multi-material distribution. To realize the proposed platform, the following research objectives are planned:1) Development of Design for AM (DfAM) methods to aid designers in defining and exploring design spaces enabled by AM. This method focuses on conceptual design and first steps of embodiment design. Information modeling technique will be used to establish AM knowledge support to the novel function-drive DfAM method for part consolidation; 2) Development of geometric modeling and optimization methods and tools to support the design of hierarchical complex structure with varied material distribution. Hybrid geometric modeling techniques will be developed to support fast lattice generation; 3) Development of novel simulation methods and tools for hierarchical complexity and heterogeneous material composition using solid and beam hybrid finite element method. The proposed research program aims at fundamental research to advance the design, modeling and simulation of complex objects with hierarchical multi-scale structure and varied material composition. The developed method and tools will aid designers in conceptual design, detailed design, and design optimization stages to take full advantage of the design freedom provided by additive manufacturing technology. It provides a systematic approach with computer-aided tools to design innovative products that have wide applications in aerospace, automobile, and medical implant/prosthetics industry.

增材制造 (AM) 被美国材料测试协会 (ASTM) 定义为一类通过通常以逐层方式添加材料来构建 3D 物体的制造方法。与其他制造方法相比，它们具有独特的优势，例如能够制造由具有不同材料特性的异质材料制成的复杂形状的物体。增材制造方法的功能极大地提高了设计人员探索适用于各种新应用的新颖工程产品的自由度。事实上，增材制造技术通过创造具有成本效益的高价值产品，创造了制造的新范例。然而，并没有有效的设计方法来鼓励早期设计阶段的功能集成。此外，现有的几何建模方法，例如为传统制造工艺表示相对简单的几何形状而开发的参数化边界表示或实体建模技术，不再能够为增材制造设计表示足够的信息。迫切需要创新的设计方法和更好的计算机辅助设计工具来支持使用增材制造方法实现新颖的产品。所提出的研究计划旨在建立一个功能驱动设计和仿真平台，能够设计、建模和仿真多材料分布的分层结构。为了实现所提出的平台，计划实现以下研究目标：1）开发增材制造设计（DfAM）方法，以帮助设计师定义和探索增材制造所支持的设计空间。该方法侧重于概念设计和实施例设计的第一步。信息建模技术将用于为零件整合的新型功能驱动DfAM方法建立AM知识支持； 2）开发几何建模和优化方法和工具，以支持具有不同材料分布的分层复杂结构的设计。将开发混合几何建模技术以支持快速晶格生成； 3) 使用实体和梁混合有限元方法开发层次复杂性和异质材料成分的新颖模拟方法和工具。拟议的研究计划旨在进行基础研究，以推进具有分层多尺度结构和不同材料成分的复杂物体的设计、建模和模拟。开发的方法和工具将帮助设计人员在概念设计、详细设计和设计优化阶段充分利用增材制造技术提供的设计自由度。它提供了一种带有计算机辅助工具的系统方法来设计在航空航天、汽车和医疗植入物/假肢行业中广泛应用的创新产品。