|
|||||
|
|
Optimal sizing of piezo-actuators for minimum-deflection design of frames under uncertain loads |
|
| Authors: | Sarp Adali Ibrahim S Sadek James M Sloss |
| Institution: | a School of Mechanical Engineering, University of KwaZulu-Natal, Durban 4041, South Africa b Department of Mathematics and Statistics, American University of Sharjah, Sharjah, UAE c Department of Mechanical and Environmental Engineering, University of California, Santa Barbara, CA, USA d Department of Mathematics, University of California, Santa Barbara, CA, USA |
| Abstract: | 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. |
| Keywords: | Optimal piezo-patch sizes Uncertain loading Minimum deflection Frame structures |
| 本文献已被 ScienceDirect 等数据库收录！ | |