Energy Flow in Complex Elastodynamic Structures

复杂弹性动力结构中的能量流

• 批准号: 0528096
• 负责人: Richard Weaver
• 金额: --
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0528096&HistoricalAwards=false
• 关键词: Energy; Flow; Complex; Elastodynamic; Structures

Title: Energy Flow in Complex Elastodynamic StructuresProposal No. CMS-0528096 PI: Richard L. Weaver, University of Illinois at Urbana-ChampaignAbstractThis dynamical systems project investigates vibrational and acoustic energy, its mean flow and its distribution in frequency, in complex irregular reverberant structures. The work is conceived with a view towards improved theories for the statistics of energy transport in such systems. The project is theoretical, with supporting numerical simulations and experiments. The method to be used has shown itself capable of describing distributions of energy density beyond the capabilities of conventional Statistical Energy Analysis (SEA), and to do so without the sometimes restrictive assumptions of SEA. Intellectual merit is assured through collaborations with academic and industrial structural acousticians, physicists, ultrasonic researchers and seismologists, presentations at physics and acoustical conferences, and publications in archival journals. Impacts include advanced training of students, cross fertilizations between disparate scientific fields (reverberation room acoustics, ultrasonics, stochastic seismic waves, musical acoustics, mesoscopic electronics, and diffuse optics for lidar and medical imaging), articles in popular presses, presentations at physics and acoustical conferences, and publications in archival journals.

标题：复杂弹性动力结构中的能量流提案编号CMS-0528096 PI：Richard L.本动力系统项目研究复杂不规则混响结构中的振动和声能、其平均流量及其频率分布。 这项工作的设想，以期改进理论的统计，在这种系统中的能源运输。 该项目是理论性的，支持数值模拟和实验。 所使用的方法已经表明，它能够描述超出传统统计能量分析（SEA）能力的能量密度分布，并且在没有SEA有时限制性假设的情况下这样做。 通过与学术和工业结构声学家，物理学家，超声波研究人员和地震学家，在物理和声学会议上的演讲，以及在档案期刊上的出版物的合作，确保知识价值。 影响包括学生的高级培训，不同科学领域（混响室声学，超声波，随机地震波，音乐声学，介观电子学和激光雷达和医学成像的漫射光学）之间的交叉施肥，在流行的出版物中的文章，在物理和声学会议上的演讲，以及在档案期刊上的出版物。