Exploiting dynamic magnetic fields for new magnetorheological fluid damping capability

Christian G. Vazquez; Jeffrey L. Kauffman

doi:10.1117/12.2556482

18 May 2020 Exploiting dynamic magnetic fields for new magnetorheological fluid damping capability

Christian G. Vazquez, Jeffrey L. Kauffman

Proceedings Volume 11376, Active and Passive Smart Structures and Integrated Systems XIV; 113760Y (2020) https://doi.org/10.1117/12.2556482
Event: SPIE Smart Structures + Nondestructive Evaluation, 2020, Online Only

Abstract

When considering damping in the design of a vibration system, magnetorheological (MR) fluids can provide an alternative to more traditional dampers that can take up unnecessary mass and volume on aircraft and space missions. The goal of this paper is to study the effects of transient magnetic fields on vibration systems in order to allow the system to reach its equilibrium position. These effects are modeled using a sandwich beam with an MR fluid core. A numerical and experimental modal analysis is conducted on the beam to measure the properties of the first mode, which are then used for a transient finite element model where multiple transient magnetic fields influence the beam’s motion. Comparing the modal analysis results reveals that both analyses are in agreement, as they offer similar modal parameters for the first mode. The free-decay numerical simulation shows that transient magnetic fields allow the sandwich beam to return to equilibrium, while also doing so quickly. Among other steps, future work will primarily consist of replicating the numerical transient results experimentally.

Conference Presentation

Citation Download Citation

Christian G. Vazquez and Jeffrey L. Kauffman "Exploiting dynamic magnetic fields for new magnetorheological fluid damping capability", Proc. SPIE 11376, Active and Passive Smart Structures and Integrated Systems XIV, 113760Y (18 May 2020); https://doi.org/10.1117/12.2556482

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