Energy exchange in uncorrelated ray fields of vibroacoustics
Energy exchange in uncorrelated ray fields of vibroacoustics
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振动声学不相关射线场中的能量交换
DOI：
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发表时间：
2006
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通讯作者：
A. Bot
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作者：
A. Bot
本文研究了非相干光场的能量和强度基本方程。一些虚拟源分布在区域的边界上，但也在衍射楔和峰上。它们的幂由适当的边界积分方程确定。一旦这些功率已知，域内的能量和强度就可以通过这些源的贡献的简单叠加来给出。所有的传播路径都考虑在内，包括直接，反射，折射，透射和衍射射线，而且，辐射的表面，边缘或角落模式，和结构响应的相互路径。该理论统一了从室内声学中确定混响时间的“辐射度方法”到结构动力学中给出组合结构子系统内部振动能量再分配的“辐射传递方法”的几个领域。因此，这是一个候选人的替代统计能量分析时，现场…
This paper is concerned with the basic equations governing energy and intensity in incoherent ray fields. Some fictitious sources are distributed on the boundary of the domain but also on diffracting wedges and peaks. Their powers are determined by some appropriate boundary integral equations. Once these powers are known, energy and intensity inside the domain are given by a simple superposition of contributions of these sources. All paths of propagation are taken into account including direct, reflected, refracted, transmitted, and diffracted rays, but also, radiation by surface, edge or corner modes, and the reciprocal paths for structural response. This theory unifies several fields from the “radiosity method” in room acoustics which determines the reverberation time to the “radiative transfer method” in structural dynamics which gives the repartition of vibrational energy inside subsystems of built-up structures. This is therefore a candidate for an alternative to statistical energy analysis when fiel...