ELECTROMECHANICAL RESPONSE OF MULTILAYER PIEZOELECTRIC ACTUATORS FOR FUEL INJECTORS FROM ROOM TO CRYOGENIC TEMPERATURES

被引:0
|
作者
Shindo, Y. [1 ]
Narita, F. [1 ]
Sato, K. [1 ]
Sasakura, T. [1 ]
机构
[1] Tohoku Univ, Grad Sch Engn, Dept Mat Proc, Sendai, Miyagi 9088579, Japan
关键词
piezomesomechanics; finite element method; material testing; electromechanical field concentrations; hydrogen fuel injection systems;
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
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.
引用
收藏
页码:495 / 502
页数:8
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