Honeycomb and Re-entrant Periodic Architectures for Vibration Hazard Mitigation and Improved Performance of Structural Assemblies

该奖项将侧重于分析具有确定性周期结构的蜂窝固体的动态行为和波传播特性。 所得到的周期性集合产生弹性波不传播的频带和方向（阻带），并且相应的振动和声辐射被显著减少。 确定性周期性结构的可扩展几何形状允许它们作为创新的振动控制/减灾系统应用于小型和大型结构系统。特别强调将被放置在与凹进架构蜂窝的分析。 将充分研究其独特的机械性能，强调其缓解振动危害以及吸收冲击能量的潜力。 该奖项是一个多学科和合作的研究成果，分析计算和实验工作将交织在一起。 PI将在整个项目期间合作教授通用课程，并开发被动和主动结构控制的新高级课程。 这个团队的努力将促进土木工程和机械工程学生的多学科背景。 该奖项的概念和结果将逐步引入教学的几门课程，以使学生接触到创新的研究思路及其应用。 学生将获得实践经验，这将有助于他们的技术和专业技能的增长。

This award will focus on the analysis of the dynamic behavior and wave propagation characteristics of cellular solids with deterministic periodic architecture. The resulting periodic assembles generate frequency bands and directions where elastic waved do not propagate (stop bands) and the corresponding vibrations and sound radiation are substantially reduced. The scalable geometry of deterministic periodic architectures allows for their application as innovative vibration control/hazard mitigation systems both to small-scale and large-scale structural systems.Particular emphasis will be placed in the analysis of honeycombs with re-entrant architectures. Their unique mechanical properties will be fully investigated emphasizing their potential for vibration hazard mitigation as well as impact energy absorption. Efficient use of the intervening space will be also addressed for improving performance.This award is a multidisciplinary and collaborative research effort, where analytical computational and experimental work will be interlaced. The PIs will collaborate throughout the duration of the project in teaching common courses and in developing a new advanced course in Passive and Active Structural Control. This team effort will foster both civil and mechanical engineering students' multidisciplinary background. The concept and the results of this award will be progressively introduced in several courses of instruction in order to expose the students to innovative research ideas and their applications. The student will be given hands-on experience that will contribute to the growth of their technical and professional skills.