Experimental study of the attenuation properties of metal-viscoelastic bi-layered materials

6th International Conference on Nanomaterials and Materials Engineering

Ghachi, R.F.^1 ; Alnahhal, W.I.^1

Department of Civil and Architectural Engineering, Qatar University, Doha, Qatar^1

关键词: Attenuation properties;    Elastic wave band gaps;    Electrodynamic shakers;    Layered material;    Longitudinal vibrations;    Multilayered materials;    Phononic Crystal;    Vibration attenuation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/380/1/012001/pdf
DOI  :  10.1088/1757-899X/380/1/012001

来源: IOP

【 摘 要 】

Phononic crystals (PCs) are multi-layered materials with functional elastic wave band gaps where propagation of vibration within these band gaps is restricted. PCs have vibration attenuation properties dependent on their periodic structure and material constituent. In this study, the band gap and vibration attenuation of a one-dimensional PC subjected to longitudinal vibration were evaluated experimentally. Two bi-layered specimens composed of Aluminum and a Silicone Rubber (Elite double 8) were manufactured and tested. The specimens were subjected to vibration from an electrodynamic shaker to obtain pseudo-transfer functions.