Multiscale Modeling of Advanced Materials and Manufacturing Processes in Design and Development of Lightweight Structures

轻质结构设计和开发中先进材料和制造工艺的多尺度建模

• 批准号: RGPIN-2018-05642
• 负责人: Behdinan, Kamran
• 金额: $ 4.01万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=713757
• 关键词: Multiscale; Modeling; Advanced; Materials; Manufacturing

From reduced operational costs to improved environmental impact, design using lightweight structures (LWS) is critical to success in many industries including aerospace, biomedical, and nuclear. Whether it is designing a lighter airframe to improve aircraft fuel efficiency or increasing the strength-to-weight ratio of biomedical implants and prosthetics, LWS play a significant role in the development of future technologies. The proposed research that will be conducted involves the expansion of current as well as the development of new multiscale simulation methods for dynamic high temperature modeling of advanced materials and manufacturing processes in the design and development of LWS. Multiscale simulation involves solving problems that have important features at multiple length and time scales in order to accurately model the system from the molecular to the component level. Multiscale modeling of novel LWS technologies is becoming essential as LWS are increasingly being associated with advanced manufacturing methods involving additive manufacturing and nanofabrication. These methods build component level geometries through processes that occur on the macro- and nanoscales and thus require a multiscale approach to accurately predict the resulting component properties and behaviour. Design for LWS through multiscale modeling, along with the advent of new processes for advanced manufacturing of LWS, represents a technological advancement that is currently in a critical stage of research and development. To grow this area, there is a need to develop innovative simulation techniques that can account for the unique and complex physical effects that act on multiple length and timescales, while reducing the current reliance on time consuming and expensive experiments. However, a number of existing issues within the field of multiscale modeling persist. These issues include timescale restrictions associated with dynamic atomistic-to-continuum scale modeling, seamless transfer of thermal properties between length and time scales, adaptive resizing of concurrent multiscale model domains, and bridging nano- to micro-scale modeling with micro- to macroscale simulations. To meet these needs, the proposed research program will develop novel dynamic multiscale modeling techniques, together with proven multiscale techniques already established within the applicant's research lab at UofT, to investigate the mechanical behaviour of advanced materials and manufacturing methods used in the design and development of LWS. The growing demand along with the increased integration of advanced material and manufacturing processes in aerospace, biomedical, and nuclear industries will ensure that design and implementation of LWS through accurate multiscale modeling techniques will help promote economic growth in Canada and countries with a strong presence in these industries.

从降低运营成本到改善环境影响，使用轻质结构（LWS）的设计对于许多行业的成功至关重要，包括航空航天，生物医学和核能。无论是设计更轻的机身来提高飞机燃油效率，还是提高生物医学植入物和假体的强度重量比率，LWS在未来技术的开发中起着重要作用。将进行的拟议研究涉及当前的扩展以及开发新的多尺度仿真方法，用于在LWS设计和开发中进行高级材料和制造过程的动态高温建模。 多尺度仿真涉及解决在多个长度和时间尺度上具有重要特征的问题，以便将系统从分子到组件级别进行准确模拟。新型LWS技术的多尺度建模变得必不可少，因为LWS越来越多地与涉及增材制造和纳米制作的先进制造方法相关。这些方法通过在宏观和纳米级上发生的过程构建组件级别的几何形状，因此需要一种多尺度方法来准确预测所得的组件属性和行为。通过多尺度建模为LWS设计，以及用于LWS高级制造的新工艺的出现，代表了目前处于研究和开发的关键阶段的技术进步。为了发展该领域，有必要开发创新的模拟技术，这些技术可以解释对多长度和时间表的独特且复杂的物理效果，同时减少当前对耗时和昂贵的实验的依赖。 但是，多尺度建模领域内的许多现有问题持续存在。这些问题包括与动态原子至颈部尺度建模相关的时间尺度限制，长度和时间尺度之间的热性能无缝传递，同时使用的多尺度模型域的自适应调整，以及将纳米尺度建模桥接到微观尺度建模。为了满足这些需求，拟议的研究计划将开发新型的动态多尺度建模技术，以及在UOFT申请人研究实验室内已经建立的已验证的多尺度技术，以研究LWS设计和开发中高级材料和制造方法的机械行为。日益增长的需求，以及在航空航天，生物医学和核行业中高级材料和制造过程的整合不断增长，将确保通过准确的多尺度建模技术的设计和实施LWS的设计和实施，将有助于促进加拿大和在这些行业中拥有强大存在的国家的经济增长。