Optimal sizing of piezo-actuators for minimum-deflection design of frames under uncertain loads

Adalı S., Sadek I. S., Bruch J. C., Sloss J. M., Cagdas I. U.

JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS, cilt.344, sa.5, ss.698-710, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 344 Sayı: 5
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1016/j.jfranklin.2006.03.019
  • Dergi Adı: JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.698-710
  • Anahtar Kelimeler: optimal piezo-patch sizes, uncertain loading, minimum deflection, frame structures, INDUCED STRAIN ACTUATORS, INTERVAL-ANALYSIS METHOD, COMPOSITE BEAMS, SHAPE CONTROL, PIEZOELECTRIC ACTUATORS, CONVEX MODELS, SUBJECT, PLATES
  • Akdeniz Üniversitesi Adresli: Hayır

Özet

Optimal piezo-actuator sizes and locations for a frame structure under bending load uncertainty are determined with the objective of minimizing the deflection under worst case of loading. The bending moments generated by the piezo-actuators are used for deflection control, i.e., to minimize the maximum deflection. The frame is subjected to a tip load which lies in an uncertainty domain with regard to its magnitude and direction. The specific uncertain loading studied in the present paper involves a load of given magnitude but of unknown direction, which should be determined to produce the highest deflection. The worst case of loading depends on the size and location of the actuators leading to a nested problem of optimization (design) and anti-optimization (uncertainty problem). Results are given for deterministic and uncertain loading conditions. (c) 2006 The Franklin Institute. Published by Elsevier Ltd. All rights reserved.