Progress in Materials Science ( IF 33.6 ) Pub Date : 2022-09-21 , DOI: 10.1016/j.pmatsci.2022.101021
Wenwang Wu , Re Xia , Guian Qian , Zengqian Liu , Nima Razavi , Filippo Berto , Huajian Gao
先进制造、多学科融合和人工智能的快速发展,在轻量化、高集成度、多功能、智能、柔性和仿生材料和结构的设计方面迎来了技术发展的新时代。由于结构设计与制造脱节、复杂结构制造效率低、实际机械完整性降低和制造结构的可靠性与结构设计获得的理论值相比,多功能结构集成水平不足,经济成本过高。此外,工业装备所采用的先进材料和结构往往需要承受极端的服役环境,进一步整合先进结构的设计、制造、功能、性能评价和工业应用,为优化提供理论和技术基础越来越重要。他们的捏造。鉴于此,作者提出了一种新的“机械结构”研究范式,旨在通过整合结构设计、制造和性能评估,实现结构、装置和设备在极端服役环境下的目标力学响应。通过基于所需的静态和动态力学响应设计新颖的结构,并考虑整个变形过程中的力学行为,“机械结构”这一新领域追求以应用为导向的结构设计方法。作为机械结构的典型例子,具有高刚度、强度、抗冲击性、能量吸收能力、冲击波衰减和降噪能力的轻型多功能晶格结构在航空航天、交通运输、国防、生物医学、能源、机械、设备和其他工业领域。在这方面,介绍了受多晶微结构启发的晶格超结构的力学设计,首先讨论了典型的力学性能和多功能性能冲突,并展示了基于创新结构设计的“机械结构”的科学价值,操纵多功能机械性能,
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Mechanostructures: Rational mechanical design, fabrication, performance evaluation, and industrial application of advanced structures
The rapid progress of advanced manufacturing, multidisciplinary integration and artificial intelligence has ushered in a new era of technological development in the design of lightweight, well-integrated, multifunctional, intelligent, flexible and biomimetic materials and structures. The traditional approach in structural research poses several intrinsic limitations on the practical performance of devices and instruments in harsh industrial environments, due to factors such as the disconnection between structural design and manufacturing, low efficiency in the manufacture of complex structures, reduced actual mechanical integrity and reliability of manufactured structures compared to the theoretical values obtained from structural design, insufficient level of multifunctional structural integration, and excessive economic cost. In addition, the advanced materials and structures incorporated in industrial equipment often need to withstand extreme service environments, and it is increasingly important to further integrate the design, manufacture, function, performance evaluation and industrial application of advanced structures, to provide the theoretical and technical bases for optimizing their fabrication. In view of the above, the authors propose a new research paradigm of “mechanostructures,” which aims to achieve target mechanical responses of structures, devices and equipment in extreme service environments by integrating their structural design, manufacturing and performance evaluation. By designing novel structures based on desired static and dynamic mechanical responses and considering the mechanical behavior throughout the whole deformation process, the new field of “mechanostructures” pursues an application-oriented structural design approach. As a typical example of mechanostructures, lightweight multifunctional lattice structures with high stiffness, strength, impact resistance, energy absorption capacity, shock wave attenuation and noise reduction show great potential for applications in aerospace, transportation, defense, biomedical, energy, machinery, equipment and other industrial fields. In this respect, the mechanical design of lattice metastructures inspired by polycrystalline microstructures is presented, starting with a discussion on typical mechanical properties and multifunctional performance conflicts, and demonstrating the scientific merits of “mechanostructures” based on the innovative structural design, manipulation of the multifunctional mechanical properties, and elaboration of the underlying physical mechanisms.
更新日期:2022-09-21
原文链接:https://www.x-mol.com/paper/1572791516154880000/t?adv