Energy Flow in Complex Elastodynamic Structures

论文题目：复杂弹性动力学结构中的能量流动。CMS-0528096 PI：理查德·L·韦弗，伊利诺伊大学香槟分校摘要这个动力系统项目研究了复杂的不规则混响结构中的振动和声能、其平均流动及其频率分布。这项工作是为了改进这类系统中能量传输的统计理论。该项目是理论的，有支持的数值模拟和实验。将要使用的方法已经表明，它能够描述常规统计能量分析(SEA)能力之外的能量密度分布，并且这样做时没有SEA有时的限制性假设。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合作，在物理学和声学会议上发表演讲，以及在档案期刊上发表文章，可以确保学术价值。影响包括对学生的高级培训，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、激光雷达和医学成像的漫射光学)之间的交叉培养，流行出版社上的文章，在物理学和声学会议上的演讲，以及在档案期刊上发表的文章。

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.