ACTIVE CONTROL OF PIEZOTHERMOELASTIC FGM SHELLS USING INTEGRATED PIEZOELECTRIC SENSOR/ACTUATOR LAYERS
An attempt on the static and dynamic control of functionally graded material (FGM) shells subjected to temperature gradient is carried out by using integrated piezoelectric sensor/actuator layers. Based on the assumed natural strain and enhanced assumed strain method, an EAS piezoelectric solid shell element is developed to account for the modelling and control of piezoelectric shell laminates under coupled displacement, temperature and electric potential fields. The base shell is of functionally graded material (FGM) type, with properties graded in the thickness direction according to a volume fraction power-law distribution. A constant displacement and velocity feedback control algorithm is applied in a closed loop system to provide feedback control of the integrated FGM shell structures. The effects of constituent volume fraction and feedback control gain on the static and dynamic responses of the FGM shell system are demonstrated in detail.
Piezoelectric Solid shell element EAS FGM shell
S J Zheng F Dai Y Feng
Aeronautical Science Key Lab of Smart Materials & Structures Nanjing University of Aeronautics & Astronautics, Nanjing, 210016, P.R.China
国际会议
南京
英文
172-185
2006-09-24（万方平台首次上网日期，不代表论文的发表时间）