Abstract

The performance of a viscoelastic particulate composite (VEPC) in the passive control of parametric instability of layered beams is investigated. The effective properties of the VEPC layers in the layered beams are first estimated, and then the parametric instability of the layered beams is analyzed by deriving a finite element model. The results reveal significantly improved passive control of parametric instability of the layered beams when the monolithic viscoelastic damping layers are replaced by the present VEPC layers. Therefore, the present VEPC may be a potential damping material for improved passive control of parametric instability of flexible structures.

摘要

研究了粘弹性颗粒复合材料（VEPC）在层状梁参数不稳定性被动控制中的性能。首先估计层状梁中VEPC层的有效特性，然后通过推导有限元模型分析层状梁的参数不稳定性。结果表明，当整体粘弹性阻尼层被现有的 VEPC 层取代时，层状梁的参数不稳定性的被动控制得到显着改善。因此，本发明的 VEPC 可能是一种潜在的阻尼材料，用于改进柔性结构参数不稳定性的被动控制。