Skip to content.

TUD

search  |  internal  |  deutsch
Personal tools
TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology


prev/next pubs | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998 | 1997 | 1996

[back]


47. 


Viscoplastic behaviour of perovskite type ferroelectrics



A. Y. Belov, W. S. Kreher

Materials Science and Engineering B 118, 7 (2005)

We present a viscoplastic (rate-dependent) constitutive model describing both hysteretic and sub-coercive behaviour of ferroelectric ceramics. Viscoplastic models employ rate equations for the volume fractions of orientation variants along with a distribution function for grain orientations, providing a statistical macroscopic description for the processes of polarization reversal in polycrystalline ferroelectrics. Here attention is focused on two viscoplastic models for perovskite type ferroelectrics undergoing a cubic-to-tetragonal phase transition. Both models incorporate 90 degrees and 180 degrees domain switching, but differ in a number of representative domain orientations, which is 6 and 42, respectively. Different parameterisations for the models were tested, with a special emphasis on orientation effects in the behaviour of poled ferroelectrics under multi-axial loading as well as on rate effects. Simulation of the polarization rotation in soft PZT ceramics by electric field applied at an angle to the original poling direction show good agreement between the predictions of the viscoplastic model and experimental data.



doi absolute link10.1016/j.mseb.2004.12.057
online abstract at the publisher site
publisher site (ISSN:0921-5107)
export BibTeX citation (txt file)
export EndNote citation (ris file)


prev/next 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998 | 1997 | 1996

[back]



















































last modified: 2017.02.20 Mo
author: webadmin

contact
Prof. Dr. Gianaurelio Cuniberti
secretariat:
Ms Sylvi Katzarow
phone: +49 (0)351 463-31420
fax: +49 (0)351 463-31422
office@nano.tu-dresden.de
postal address:
Institute for Materials Science
TU Dresden
01062 Dresden, Germany
visitors and courier address:
HAL building
TU Dresden
Hallwachsstr. 3
01069 Dresden, Germany
Max Bergmann Center
TU Dresden
Budapester Str. 27
01069 Dresden, Germany