Energy Flow in Complex Elastodynamic Structures

题目：复杂弹性动力结构中的能量流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、平均流量及其频率分布。这项工作的设想是为了改进这种系统中能量输运的统计理论。该项目是理论的，有支持的数值模拟和实验。所使用的方法已经表明，它本身能够描述超出传统统计能量分析能力的能量密度分布，而且在这样做时不需要统计能量分析有时具有限制性的假设。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的合作，在物理和声学会议上的演讲，以及在档案期刊上的出版物，保证了知识价值。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，介视电子学，以及激光雷达和医学成像的漫射光学）之间的交叉融合，通俗报刊上的文章，物理和声学会议上的演讲，以及档案期刊上的出版物。

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.