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

用于减轻振动危害并提高结构组件性能的蜂窝状和凹入式周期性架构

• 批准号: 0201371
• 负责人: Panagiotis Tsopelas
• 金额: --
• 依托单位: Catholic University of America
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-07-01 至 2006-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0201371&HistoricalAwards=false
• 关键词: Honeycomb; Re; entrant; Periodic; Architectures

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.

该奖项将重点分析具有确定性周期结构的细胞固体的动态行为和波传播特性。由此产生的周期性组合产生弹性波不传播的频带和方向（停止带），相应的振动和声辐射大大减少。确定性周期性结构的可扩展几何结构允许它们作为创新的振动控制/危害缓解系统应用于小型和大型结构系统。特别的重点将放在分析蜂巢与可重新进入的架构。将充分研究其独特的机械性能，强调其减轻振动危害和吸收冲击能量的潜力。为了提高性能，还将讨论如何有效地利用中间空间。该奖项是一项多学科合作研究，其中分析计算和实验工作将交织在一起。在整个项目期间，pi将在教授普通课程和开发被动和主动结构控制的新高级课程方面进行合作。这个团队的努力将培养土木和机械工程专业学生的多学科背景。该奖项的概念和结果将逐步引入几门教学课程，以使学生接触到创新的研究理念及其应用。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发展。