Meta-composites for noise and vibration control

用于噪声和振动控制的超复合材料

基本信息

批准号：
RGPIN-2015-05327
负责人：
Atalla, Noureddine
金额：
$ 3.13万
依托单位：
Université de Sherbrooke
依托单位国家：
加拿大
项目类别：
Discovery Grants Program - Individual
财政年份：
2016
资助国家：
加拿大
起止时间：
2016-01-01 至 2017-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=613489
关键词：
Meta composites noise vibration control

项目摘要

The proposed research program is aimed at developing novel and lightweight meta-composite sound packages designed for sound and vibration applications. The specific application of interest consists of modern lightweight constructions with attached noise control treatments. The targeted meta-composites combine the natural properties of the used structures (stiffness, lightweight…) and attached sound packages (e.g. passive absorption of open cell foams) with resonant and active inclusions suitably located and controlled to ensure maximum structural, vibration and acoustic performance over the entire audible frequency range and at low frequency in particular. This represents the major and current challenge in sound insulation since in this frequency range conventional treatments are practically inefficient. Using state of the art numerical and experimental tools, the methodology includes (i) designing new absorptive materials with augmented performances using a combination of adaptive and passive means; (ii) developing refined and robust analytical and computational models for these meta-composites combined with their fine experimental validations; (iii) fabricating reduced scale prototypes and using industry representative experimental tests to prove their practical performance and (iv) quantification of the variability and robustness of the developed prototypes. The outcome of this research is both fundamental knowledge (refined analytical and numerical models elucidating the used physics and guiding the design) and technology (characterization and design tools, fully functional prototypes). These developments are generic and applicable to noise and vibration control problems in the transport, aerospace and construction sectors. Moreover, several highly qualified people will be trained through this program; they will be able to support these industries and Canadian research institutions.

拟议的研究计划旨在开发专为声音和振动应用而设计的新型轻质超复合材料声音包，其具体应用包括现代轻质结构与附加噪声控制处理的兴趣，目标超复合材料结合了自然特性。所使用的结构（刚性、轻质......）和附加的声音包（例如开孔泡沫的被动吸收）以及适当定位和控制的共振和主动内含物，以确保在整个可听频率范围内和在特别是低频，这代表了隔音方面的主要和当前挑战，因为在此频率范围内，传统处理方法实际上效率较低，该方法包括（i）使用增强性能设计新的吸声材料。自适应和被动手段的结合；（ii）结合精细的实验验证，为这些超复合材料开发精细且稳健的分析和计算模型；（iii）制造缩小尺寸的原型并使用行业代表性的实验测试来证明其实际性能和(iv) 量化这项研究的成果既是基础知识（阐明所使用的物理原理并指导设计的精细分析和数值模型）又是技术（表征和设计工具、功能齐全的原型）。此外，还将通过该计划培训一些高素质人才，以支持这些行业和加拿大的研究机构。