An analytical and experimental study on dampening material effects on the dynamic behavior of free-free aluminum sheets

Q2 Materials Science

Engineering Solid Mechanics Pub Date : 2021-01-01 DOI:10.5267/J.ESM.2021.1.002

R. Khorasani, S. A. H. Kordkheili, H. Parviz

引用次数: 0

Abstract

This work aims to present an experimentally verified analytical solution to examine damping properties of systems including viscoelastic treatments. Although there are several methods for characterizing the behavior of three-layer damping systems, the RKU method is the most frequently used one. In this paper, this method is modified such a way that to be applied for a five-layer damping system. The achieved analytical relations are then employed to study the effects of a four-layer vibration-absorbing coating on the dynamic behavior of an aluminum sheet with free-free boundary conditions. Since the vibration-damping properties of the coating are unknowns, its loss factor and shear modulus are experimentally extracted based on the ASTM E756-05 standard method. The comparison between the analytical solution and performed modal tests expresses the efficiency of the presented method.

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阻尼材料对自由-自由铝板动力性能影响的分析与实验研究

这项工作的目的是提出一个实验验证的分析解决方案，以检查系统的阻尼特性，包括粘弹性处理。虽然有几种方法来表征三层阻尼系统的行为，但RKU方法是最常用的一种。本文对该方法进行了改进，使其适用于五层阻尼系统。利用所得到的解析关系，研究了四层吸振涂层对自由-自由边界条件下铝板动力性能的影响。由于涂层的减振性能未知，因此根据ASTM E756-05标准方法实验提取其损失因子和剪切模量。解析解与模态试验结果的比较表明了该方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Engineering Solid Mechanics Materials Science-Metals and Alloys

CiteScore

3.00

自引率

0.00%

发文量

期刊介绍： Engineering Solid Mechanics (ESM) is an online international journal for publishing high quality peer reviewed papers in the field of theoretical and applied solid mechanics. The primary focus is to exchange ideas about investigating behavior and properties of engineering materials (such as metals, composites, ceramics, polymers, FGMs, rocks and concretes, asphalt mixtures, bio and nano materials) and their mechanical characterization (including strength and deformation behavior, fatigue and fracture, stress measurements, etc.) through experimental, theoretical and numerical research studies. Researchers and practitioners (from deferent areas such as mechanical and manufacturing, aerospace, railway, bio-mechanics, civil and mining, materials and metallurgy, oil, gas and petroleum industries, pipeline, marine and offshore sectors) are encouraged to submit their original, unpublished contributions.