Linear shell elements for active piezoelectric laminates

Gil Rama , Dragan Z. Marinkovic , Manfred W. Zehn

Abstract

Piezoelectric composite laminates are a powerful material system that offers vast options to improve structural behavior. Successful design of piezoelectric adaptive structures and testing of control laws call for highly accurate, reliable and numerically efficient numerical tools. This paper puts focus onto linear and geometrically nonlinear static and dynamic analysis of smart structures made of such a material system. For this purpose, highly efficient linear 3-node and 4-node finite shell elements are proposed. Both elements employ the Mindlin-Reissner kinematics. The shear locking effect is treated by the discrete shear gap (DSG) technique with the 3-node element and by the assumed natural strain (ANS) approach with the 4-node element. Geometrically nonlinear effects are considered using the co-rotational approach. Static and dynamic examples involving actuator and sensor function of piezoelectric layers are considered.

Key Words

active structure; linear shell element; piezoelectricity; co-rotational FEM; geometric nonlinearity

Address

Gil Rama and Manfred W. Zehn — Department of Structural Analysis, Berlin Institute of Technology, Germany
Dragan Z. Marinkovic — Department of Structural Analysis, Berlin Institute of Technology, Germany; Faculty of Mechanical Engineering, University of Nis, Serbia

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