| Texto completo | |
| Autor(es): |
Goncalves, Paulo J. Paupitz
;
Cleante, Vinicius G.
;
Carneiro Jr, Jean P.
;
Waters, Timothy
;
Rade, Domingos A.
;
Brennan, Michael J.
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Sound and Vibration; v. 622, p. 17-pg., 2026-02-05. |
| Resumo | |
The dynamics of hanging chains, a topic studied since the 18th century, has relevance in contemporary engineering applications, particularly in low-frequency vibration control. This paper concerns the use of hanging chains to mitigate vibrations of a host structure. To enable predictions to be made and to identify the key parameters of the chain, four models are developed, each of which contributes to the predictions and physical insight in a different way. The first is a continuous model, which is only strictly valid at relatively low frequencies, when the length of a chain link is small compared to the wavelength at the top of the chain. The second is a finite element model considering a chain made of discrete rigid links, which is valid up to much higher frequencies. The other two models are an approximate hybrid lumped parameter/ continuous model, which provides some additional physical insight, and a very simple approximate lumped parameter model, which can be used to predict the vibration attenuation effectiveness of a chain when connected to a host structure. Laboratory measurements are presented to assess the validity of the models and to demonstrate the efficacy of chains as a passive vibration control device. (AU) | |
| Processo FAPESP: | 22/11995-2 - Projetando Metamateriais Usando Não-linearidade Geométrica para formar uma super band de atenuação em Baixa Frequências |
| Beneficiário: | Vinícius Germanos Cleante |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 24/02409-8 - Sobre o uso de ressonadores locais para formar uma super banda de atenuação em metaestruturas de viga |
| Beneficiário: | Vinícius Germanos Cleante |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado |
| Processo FAPESP: | 19/19335-9 - Modelagem, projeto e análise experimental de estruturas periódicas não lineares |
| Beneficiário: | Jean Paulo Carneiro Junior |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado Direto |