Uni-axial and multi-axial Electromechanical Couple behavior of PZT53
The uni-axial and multi-axial electric-mechanical behavior are measured in the investigation.The results under two uni-axial loading mode show that when the loading parallel to the polarization and electric field,the compression has obvious effect on the remanent polarization,coercive field and strain magnitude,however when the loading perpendicular to the polarization and electric field,the loading has little effect on the remanent polarization,coercive field,the tension has obvious effected the strain magnitude.The multi-axial constitutive behavior of poled and unpoled PZT5 is measured under different proportional tension-torsion loading and compression-torsion loading until destroy.Deformation is measured using strain gauges.These results are used to map out Switching and destroy surfaces.The two surfaces are found to be a function of the polarization.Switching surface is similar to Drucker-Prager yield surface.Destroy behavior corresponds to maximal principal normal stress rule.For poled PZT53,the effect of bias electric field on its multiaxial behavior has also been exploited.The results indicated that the Switching surface disappear with the increased bias electric.The ultimate goal is to develop an experimentally validated micromechanics based phenomenological constitutive model for ferroelectric materials.
uni-axial multi-axial Electromechanical Couple constitutive switching surface destroy surface
Q.Wan C.Chen Y.P.Shen
Institute of Structural Mechanics,China Academy of Engineering Physics,Mianyang,621900,Sichuan,China Key Laboratory,School of Astronautics and Aeronautics,Xian Jiaotong University,Xian 710049 China
国际会议
西安
英文
1-7
2012-10-01（万方平台首次上网日期，不代表论文的发表时间）