Dynamic shape control of sub-sections of moderately thick beams
The present paper is concerned with dynamic shape control of Timoshenko beams by self-stress actuation. In many practical applications, it is sufficient to control a sub-section of the beam by self-stress actuation applied only within the sub-section. Given the transient external disturbances, we seek for a self-stress actuation, which results in a span-wise constant motion of the sub-section. We show that we achieve this behavior, if the resultant and the couple of the self-stress actuation correspond to the statically admissible transverse shear force and bending moment. Finally, we discuss the application of discretely acting piezoelectric actuators. (c) 2005 Elsevier Ltd. All rights reserved.
dynamic shape control beams self-stress actuation piezoelectric actuators sub-section control