Study on dynamic characteristic of closed-cell aluminum foam

Autor:	Hongxiao Chao, Wenbin Du, Junlong Ren, Hongyi Ren, Qiang Lei
Rok vydání:	2019
Předmět:	Vibration Damping ratio Materials science Modal Materials Science (miscellaneous) Modal analysis Natural frequency Metal foam Business and International Management Composite material Porosity Industrial and Manufacturing Engineering Finite element method
Zdroj:	Vibroengineering PROCEDIA. 28:142-147
ISSN:	2538-8479 2345-0533
DOI:	10.21595/vp.2019.20998
Popis:	Closed-cell aluminum foam has been widely used in aerospace, rail transit and mechanical for its outstanding performance. But for a long time, the research on its vibration damping performance is only limited to the material damping test, there are relatively few studies on its dynamic characteristics. In this paper, we studied the relationship between dynamic characteristic and feature parameters. Modal assurance criterion and Finite element method were used to verify the accuracy of experimental model. It turned out that the average pore diameter of closed-cell aluminum foam conforms to Gaussian distribution. The modal analysis method can be used in the research of dynamic characteristic of closed-cell aluminum foam. Its damping ratio showed increasing trend with the increase of porosity, natural frequency and the decrease of mean pore size. Each order natural frequency increases along with the increase of porosity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::78ee3639ad4bd8556bebb523a2675ba2 https://doi.org/10.21595/vp.2019.20998 Zobrazit plný text záznamu Plný text ve formátu PDF