Static shape actuation and dynamic control of nozzles can optimize their performance, accuracy, reliability, etc. A new curved laminated piezothermoelastic hexahedral finite element is formulated based on the layerwise constant shear angle theory and it is used for modeling and analysis of piezothermoelastic conical shell structures subjected to control voltages for static shape actuation, dynamic and thermally-induced vibration controls. Free vibration characteristics of an elastic truncated conical shell nozzle with fixed-free boundary conditions are studied using the new finite element. Both frequencies and mode shapes are accurately computed and compared favorably with the experimental and other numerical data. This study is then extended to evaluate control effectiveness of the conical shell with laminated piezoelectric layers. Static shape control is achieved by an applied electric potential. Vibration sensing and control are carried out using the negative velocity control scheme. Control of thermal excitation is also investigated. Analysis data suggests that the dynamic behavior and control characteristics of conical shells are quite complicated due to the coupled membrane and bending effects participating in the responses. To improve control effectiveness, segmentation and/or shaping of sensor and actuator layers need to be further investigated.
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ASME 2003 International Mechanical Engineering Congress and Exposition
November 15–21, 2003
Washington, DC, USA
Conference Sponsors:
- Aerospace Division
ISBN:
0-7918-3707-6
PROCEEDINGS PAPER
Control of Static Shape, Dynamic Oscillation, and Thermally Induced Vibration of Nozzles Available to Purchase
D. W. Wang,
D. W. Wang
University of Kentucky, Lexington, KY
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H. S. Tzou,
H. S. Tzou
University of Kentucky, Lexington, KY
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S. M. Arnold
S. M. Arnold
NASA Glenn Research Center, Cleveland, OH
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D. W. Wang
University of Kentucky, Lexington, KY
H. S. Tzou
University of Kentucky, Lexington, KY
S. M. Arnold
NASA Glenn Research Center, Cleveland, OH
Paper No:
IMECE2003-42419, pp. 119-128; 10 pages
Published Online:
May 12, 2008
Citation
Wang, DW, Tzou, HS, & Arnold, SM. "Control of Static Shape, Dynamic Oscillation, and Thermally Induced Vibration of Nozzles." Proceedings of the ASME 2003 International Mechanical Engineering Congress and Exposition. Aerospace. Washington, DC, USA. November 15–21, 2003. pp. 119-128. ASME. https://doi.org/10.1115/IMECE2003-42419
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