ELECTROMECHANICAL RESPONSE OF MULTILAYER PIEZOELECTRIC ACTUATORS FOR FUEL INJECTORS FROM ROOM TO CRYOGENIC TEMPERATURES
We study the electromechanical response of multilayer piezoelectric actuators for fuel injectors from room to cryogenic temperatures.A thermodynamic model was used to predict a monoclinic phase.A shift in the boundary between the tetragonal and monoclinic phases with decreasing temperature was determined,and the temperature dependent piezoelectric coefficients were evaluated.A nonlinear finite element analysis was then carried out to examine the voltage induced displacement of the multilayer piezoelectric actuators from room to cryogenic temperatures.Electromechanical fields were also calculated,and the results were discussed in detail.In addition,experimental results on the voltage induced displacement,which verify the model,were presented.
piezomesomechanics finite element method material testing electromechanical field concentrations hydrogen fuel injection systems
Y.Shindo F.Narita K.Sato T.Sasakura
Department of Materials Processing,Graduate School of Engineering,Tohoku University,Aoba-yama 6-6-02,Sendai 908-8579,Japan
国际会议
The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)
上海
英文
495-502
2011-05-22（万方平台首次上网日期，不代表论文的发表时间）