Active control of composite box beams using in-plane piezoelectric actuation and structural coupling with optimization

Jeff Koldoff; Aditi Chattopadhyay; Changho Nam

doi:10.1117/12.388817

22 June 2000 Active control of composite box beams using in-plane piezoelectric actuation and structural coupling with optimization

Jeff Koldoff, Aditi Chattopadhyay, Changho Nam

Author Affiliations +

Proceedings Volume 3985, Smart Structures and Materials 2000: Smart Structures and Integrated Systems; (2000) https://doi.org/10.1117/12.388817
Event: SPIE's 7th Annual International Symposium on Smart Structures and Materials, 2000, Newport Beach, CA, United States

Abstract

An integrated structures/controls optimization is developed for vibration suppression of a composite box beam with surface bonded piezoelectric actuators. The penalty approach is used to perform the multi-objective hybrid optimization to enhance damping of the first lag, flap, and torsion modes while minimizing control input. The objective functions and constraints include damping ratios, and natural frequencies. The design variables include ply orientations of the box beam walls, and the location and size of the actuators. Two box beam configurations are investigated and the results are compared. In the first, piezoelectric actuators are bonded to the top and bottom surfaces and in the second, actuators are bonded to all four walls for additional in-plane actuation. Optimization results show that significant reductions in control input and tip displacement can be achieved in both cases, however, improved response trends are obtained with in- plane actuation.

Citation Download Citation

Jeff Koldoff, Aditi Chattopadhyay, and Changho Nam "Active control of composite box beams using in-plane piezoelectric actuation and structural coupling with optimization", Proc. SPIE 3985, Smart Structures and Materials 2000: Smart Structures and Integrated Systems, (22 June 2000); https://doi.org/10.1117/12.388817

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