Multiscale Design and 3D printing of Ultralight Hierarchical Cellular Materials: Durability of Multi-Jet and FDM Prototypes

NOVACAD系统公司是加拿大的一家添加剂制造和后处理公司，利用不断增长的**精密添加剂制造组合来制造由塑料、**尼龙和聚合物制成的耐用和高精度产品。考虑到对结构耐久性和工程**组件轻量化的担忧，NOVACAD正在寻求开发系统的策略，以在不影响其机械功能的情况下减轻结构**和建筑组件的重量。受优化的**轻质天然材料的启发，**层次化蜂窝材料具有独特的多相层次化微结构，是开发具有高抗压强度能力的轻质和耐损伤**结构元件的一种有前途的解决方案。NOVACAD关注的是由**多喷印(MJP)、彩色喷印(CJP)和熔融沉积成型(FDM)3D打印机**附加制造的轻质分层蜂窝材料的结构**耐用性和制造缺陷。因此，本研究的目标是(通过数值和实验)评估由自由形状**多层建筑构成的3D打印超轻质聚合物蜂窝材料的结构耐久性、可重构性和可制造性。该项目旨在优化**蜂窝材料的制造工艺和材料结构，以开发高效、无缺陷的多功能轻量化工程**组件。考虑到添加剂制造服务的全球价值从2015年的**40亿美元大幅增长到2021年的108亿美元，该项目使NOVACAD能够优化其3D打印**技术，以制造结构耐用的超轻材料，同时为**麦吉尔团队提供独特的机会，应用他们在先进**细胞超材料的计算力学和多物理模拟方面的专业知识，为先进材料的设计、模拟、添加剂制造和**表征开发强大的方法。转让给NOVACAD的技术将扩大该公司的市场规模**，使加拿大在先进材料的设计和添加剂制造方面保持领先地位。

NOVACAD Systems is an additive manufacturing and post-processing company in Canada utilizing a growing**portfolio of precise additive manufacturing to fabricate durable and highly-accurate products made of plastics,**nylons, and polymers. Considering the concerns over the structural durability and lightweighting of engineering**components, NOVACAD are looking for developing systematic strategies to reduce the weight of structural**and architectural components without compromising their mechanical functionalities. Inspired by optimized**lightweight natural materials, which show unique hierarchical microstructures with multiple phases,**hierarchical cellular materials are a promising solution for developing lightweight and damage tolerant**structural elements with high compressive strength capabilities. NOVACAD is concerned about the structural**durability and manufacturing defects of lightweight hierarchical cellular materials additively manufactured by**Multi-Jet Printing (MJP), Color-Jet Printing (CJP), and Fused Deposition Modeling (FDM) 3D printers. As a**result, the objectives of this research are to evaluate (numerically and experimentally) the structural durability,**reconfigurability, and manufacturability of 3D printed ultralight polymeric cellular materials made of free-form**multi-level architectures. The project aims at optimizing the manufacturing process and material architecture of**cellular materials to develop highly-efficient and defect-free multifunctional lightweight engineering**components. Considering the magnificent growth in the global value of additive manufacturing services from**$4 billion in 2015 to $10.8 billion in 2021, the project allows NOVACAD to optimize their 3D printing**technology to manufacture structurally durable ultralight materials, while providing a unique opportunity to**McGill team to apply their expertise on computational mechanics and multiphysics simulation of advanced**cellular metamaterials for developing robust methodologies for design, simulation, additive manufacturing, and**characterization of advanced materials. The transferred technology to NOVACAD will increase the market size**of the company, keeping Canada at the forefront of design and additive manufacturing of advanced materials.