AN INVERSE-POLE-FIGURE METHOD FOR ANALYSIS OF FERROELECTRIC/FERROELASTIC POLYCRYSTALLINE
An inverse-pole-figure (IPF) method is proposed to analyze the constitutiveresponse of ferroelectric/ferroelastic polycrystalline subjected to electric loadingor mechanical loading.The IPF method fix the crystallite coordinates and makesthe directions of electric loading or uni-axial mechanical loading vary.Theresultant polarization and strain of a polycrystalline can be explicitly obtainedby numerical integrations over a unit spherical surface.Both the accuracy andefficiency of the IPF method are examined on tetragonal and rhombohedralferroelectric polycrystalline during electric poling and compared with thetraditional Monte-Carlo (MC) method.The results show that the proposed 1PFmethod is obviously superior to the MC method.Furthermore,using the IPFmethod,it is very convenient to deal with the problems where the depolarizationfield/stress induced by domain switching is taking into account thus domainswitching is a gradual process with the applied field.While this problem isdifficult to address using the MC method.
inverse pole figure ferroelectric ferroelastic domain switching polycrystalline
F.X.Li
LTCS and College of Engineering,Peking University,Beijing,100871,China,
国际会议
第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)
安徽黄山
英文
662-667
2008-06-03（万方平台首次上网日期，不代表论文的发表时间）