caa a22 4500 445811366 CHVBK 20180317145213.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s00419-010-0443-6 doi (NATIONALLICENCE)springer-10.1007/s00419-010-0443-6 Coulomb traction on a penny-shaped crack in a three dimensional piezoelectric body [Elektronische Daten] [Qun Li, Andreas Ricoeur, Meinhard Kuna] The axisymmetric problem of a penny-shaped crack embedded in an infinite three-dimensional (3D) piezoelectric body is considered. A general formulation of Coulomb traction on the crack surfaces can be obtained based on thermodynamical considerations of electromechanical systems. Three-dimensional electroelastic solutions are derived by the classical complex potential theory when Coulomb traction is taken into account and the poling direction of piezoelectric body is perpendicular to the crack surfaces. Numerical results show that the magnitude of Coulomb tractions can be large, especially when a large electric field in connection with a small mechanical load is applied. Unlike the traditional traction-free crack model, Coulomb tractions induced by an applied electric field influence the Mode I stress intensity factor for a penny-shaped crack in 3D piezoelectric body. Moreover, compared to the current model, the traditional traction-free crack model always overestimates the effect of the applied electric load on the field intensity factors and energy release rates, which has consequences for 3D piezoelectric fracture mechanics. Springer-Verlag, 2010 Coulomb traction nationallicence Penny-shaped crack nationallicence 3D piezoelectric body nationallicence Energy release rate nationallicence Intensity factor nationallicence Li Qun Institute of Mechanics and Fluid Dynamics, TU Bergakademie Freiberg, Lampadiusstrasse 4, 09596, Freiberg, Germany aut Ricoeur Andreas Institute of Mechanics, University of Kassel, Mönchebergstr. 7, 34125, Kassel, Germany aut Kuna Meinhard Institute of Mechanics and Fluid Dynamics, TU Bergakademie Freiberg, Lampadiusstrasse 4, 09596, Freiberg, Germany aut Archive of Applied Mechanics Springer-Verlag 81/6(2011-06-01), 685-700 0939-1533 81:6<685 2011 81 419 https://doi.org/10.1007/s00419-010-0443-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00419-010-0443-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Qun Institute of Mechanics and Fluid Dynamics, TU Bergakademie Freiberg, Lampadiusstrasse 4, 09596, Freiberg, Germany aut NATIONALLICENCE 700 1- Ricoeur Andreas Institute of Mechanics, University of Kassel, Mönchebergstr. 7, 34125, Kassel, Germany aut NATIONALLICENCE 700 1- Kuna Meinhard Institute of Mechanics and Fluid Dynamics, TU Bergakademie Freiberg, Lampadiusstrasse 4, 09596, Freiberg, Germany aut NATIONALLICENCE 773 0- Archive of Applied Mechanics Springer-Verlag 81/6(2011-06-01), 685-700 0939-1533 81:6<685 2011 81 419 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer