Finite Element Formulation for Active Composite Laminates | Science Publications

American Journal of Engineering and Applied Sciences

Dragan Marinkovic¹  Manfred Zehn¹ 

关键词: Smart Structures;    Finite Element;    Shell;    Piezo;    Composite;   

DOI  :  10.3844/ajeassp.2015.328.335

学科分类：工程和技术（综合）

来源: Science Publications

【 摘 要 】

Smart structures are characterized by a synergisticintegration of active materials into a passive structure con­nected by acontrol system to enable an automatic adaptation to changing environmentalconditions. Piezoelectric materials are widely used as distributed sensors andactuators in smart structures, where especially hybrid composites - acombination of fiber-reinforcedand piezoelectric laminae - are very powerful smart material systems. First, abrief review of the developed shell type finite element for smart compositestructures is presented. It is a degenerated shell element based on theReissner-Mindlin kinematical assumptions for modeling thin and moderately thickstructures made of multilayered material including piezoelectric active layerspolarized in the thickness direction. The main focus of the paper is put on thetest examples originally proposed by other authors. The finite element resultswere compared with the reference solutions obtained by Ritz typeapproximations. The considered test cases investigate the effects of shellshallowness, bending/twisting coupling and the influence of the piezoelectriclayer thickness on the deformation of the laminated structure.

【 授权许可】

Unknown