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首页> 外文期刊>Journal of Sound and Vibration >Hybrid deterministic-statistical analysis of vibro-acoustic systems with domain couplings on statistical components
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Hybrid deterministic-statistical analysis of vibro-acoustic systems with domain couplings on statistical components

机译：具有统计分量域耦合的振动声学系统的混合确定性-统计分析

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Recently a hybrid analysis method has been developed in which the various components of a complex vibro-acoustic system can be modeled either deterministically or statistically. The coupling between these two types of component is effected by using a diffuse field reciprocity relation, which relates the cross-spectrum of the forces at the boundary of it statistical component to the vibrational energy level of the component. In practical applications, components may be coupled over a domain, rather than just at the component boundaries-for example, the coupling between a plate and an acoustic volume involves the surface of the plate. It is shown in the present work that the reciprocity relation and the hybrid method can be extended to this situation, so that, for example, it is possible to couple a statistical model of a plate to a finite element model of an acoustical cavity, or to a statistical acoustical cavity. The coupling of statistical acoustical and structural components is not new, but rather is done routinely within statistical energy analysis (SEA); this part of the present work demonstrates that the relevant coupling loss factors can be found by using the hybrid method. The analysis is illustrated by various numerical examples. (C) 2008 Elsevier Ltd. All rights reserved.
机译：最近，已经开发出一种混合分析方法，其中可以确定性地或统计地对复杂的振动声系统的各个组成部分进行建模。这两种类型的组件之间的耦合是通过使用扩散场互易关系实现的，该关系将其统计组件边界处的力的交叉谱与组件的振动能级相关联。在实际应用中，组件可以在一个区域上耦合，而不仅是在组件边界上耦合-例如，板和声学体积之间的耦合涉及板的表面。在当前的工作中表明，互惠关系和混合方法可以扩展到这种情况，例如，可以将板的统计模型耦合到声腔的有限元模型，或者统计声腔。统计声学和结构组件的耦合并不是新事物，而是在统计能量分析（SEA）中按常规进行;本工作的这一部分说明可以通过使用混合方法找到相关的耦合损耗因子。各种数值示例说明了该分析。 （C）2008 Elsevier Ltd.保留所有权利。

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