Axisymmetric Parametric Resonance Analysis of Polar Orthotropic Annular Plate with ER Core

含電變流體極正交三明治環板之參數共振特性分析

葉佳益(Jia-Yi Yeh) ； 陳俊宇(Jiun-Yeu Chen)

《中華民國振動與噪音工程學會論文集》 2013 (2013/06) Pp. 73-78

摘要

本文主要在於推導並建立極正交三明治環板系統的動態穩定分析模型的建立。採用分析力學的方式來推導系統的運動方程式並利用離散層有限元素法來分析系統的動態穩定特性與穩定區之變化。在本文中討論了含電變流體之極正交三明治環板系統的動態穩定特性，其中所使用的電變流體材料特性則利用複數的形式來加以描述。文中討論電變流體的特性與施加的電場強度對於極正交三明治環板系統動態特性的影響。而系統的穩定區會隨著施加電場強度的改變而產生變化。因此，在此三明治環板上貼覆此類主動式智能材料阻尼層除了可使系統更加的穩定外，也可達到主動控制的效果。

關鍵字

參數共振 ； 極正交 ； 電變流體 ； 離散層有限元素

並列摘要

In this paper, the axisymmetric parametric resonance analysis of polar orthotropic sandwich annular plate with electrorheological (ER) core layer and constraining layer are presented. The ER core layer and constraining layer are used to improve the stability of the annular plate system. The boundaries of instability regions for the polar orthotropic sandwich annular plate system are obtained by discrete layer annular finite element and the harmonic balance method. The rheological property of an electrorheological material, such as viscosity, plasticity, and elasticity can be controlled by applying different electric fields. Thus, the damping characteristics of the sandwich system are more effective when the electric field is applied on the sandwich structure. Additionally, variation analyses of the instability regions for the polar orthotropic sandwich annular plate with different applying electric fields and some designed parameters are studied and discussed in this investigation.

並列關鍵字

parametric resonance ； polar orthotropic ； electrorheological ； discrete layer annular finite element