MODELING OF SMART PIEZOELECTRIC COMPOSITE BEAMS USING A SIMPLE HIGHER ORDER SHEAR DEFORMATION THEORY | ||
| The International Conference on Applied Mechanics and Mechanical Engineering | ||
| Article 107, Volume 15, 15th International Conference on Applied Mechanics and Mechanical Engineering., May 2012, Pages 1-29 PDF (339.98 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/amme.2012.37270 | ||
| Authors | ||
| M. A. Elshafei1; F. Alraiess2 | ||
| 1Egyptian Armed Forces. | ||
| 2Libyan Armed Forces. | ||
| Abstract | ||
| ABSTRACT The ability to change and control the shape of the structure has been a challenging problem. In the current work the shape control of isotropic as well as an orthotropic fiber-reinforced composite beam with embedded piezoelectric actuators is investigated. A finite element formulation is developed for modeling laminated composite beams with a distributed piezoelectric actuators subjected to both mechanical and electrical loads. A simple higher order shear deformation theory with virtual displacement method is used to formulate the equations of motion. The model is valid for both segmented and continuous piezoelectric elements which can be either surface bonded or embedded in the laminated beams. A two-node with four mechanical degrees of freedom is used in the finite element formulation. The electric potential is treated as a generalized electric coordinates like the generalized displacement coordinates at the mid-plane of the actuator. A MATLAB code is developed to compute the static deformations and the natural frequency of the structure system. The obtained results from the proposed model are compared to the available analytical and the finite element results of other researchers. | ||
| Keywords | ||
| Finite Element; piezoelectric materials –higher order beam theory – composite materials mechanics; Smart structure system | ||
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