MODELING AND DYNAMICS ANALYSIS OF SHELLS OF REVOLUTION BY PARTIALLY ACTIVE CONSTRAINED LAYER DAMPING TREATMENT

• Published in: Acta mechanica solida Sinica 2013-10, Vol.26 (5), p.468-479
• Main Authors: Ni, Qiao, Xiang, Yu, Huang, Yuying, Lu, Jing
• Format: Article
• Language: English
• Subjects: ACLD; active constrained layer damping (ACLD); Active constrained layers; Classical Mechanics; control performance; Damping; damping characteristics; Differential equations; Dynamic tests; Engineering; integrated first-order differential matrix equation; Mathematical analysis; Mathematical models; shell of revolution; Shells of revolution; Surfaces and Interfaces; Theoretical and Applied Mechanics; Thin Films; Vibration; 主动约束层阻尼; 动力学分析; 建模; 数值计算方法; 方程推导; 阻尼处理; 频率依赖性
• ISSN: 0894-9166; 1860-2134
• DOI: 10.1016/S0894-9166(13)60042-7

A new model for a smart shell of revolution treated with active constrained layer damping （ACLD） is developed, and the damping effects of the ACLD treatment are discussed. The motion and electric analytical formulation of the piezoelectric constrained layer are presented first. Based on the authors~ recent research on shells of revolution treated with passive constrained layer damping （PCLD）, the integrated first-order differential matrix equation of a shell of revolution partially treated with ring ACLD blocks is derived in the frequency domain. By virtue of the extended homogeneous capacity precision integration technology, a stable and simple numerical method is further proposed to solve the above equation. Then, the vibration responses of an ACLD shell of revolution are measured by using the present model and method. The results show that the control performance of the ACLD treatment is complicated and frequency-dependent. In a certain frequency range, the ACLD treatment can achieve better damping characteristics compared with the conventional PCLD treatment.