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Phase Field Modeling of Coupling Evolution of Polarization, Fracture and Dielectric Breakdown in Ferroelectric Materials
Yong Zhang1,*, Jie Wang2,3
1Tongji University, Shanghai, 200092, China
2 Zhejiang University, Hangzhou, 310058, China
3 Zhejiang Laboratory, Hangzhou, 311100, China
* Corresponding Author: Yong Zhang. Email:
The International Conference on Computational & Experimental Engineering and Sciences 2023, 27(1), 1-1. https://doi.org/10.32604/icces.2023.09368
Abstract
Ferroelectric materials have been widely used in various electromechanical devices such as sensors,
actuators, transducers and energy storage devices due to their distinguished electromechanical coupling
properties. Ferroelectric materials usually bear large mechanical loads and high electric fields in order to
give full play to their potential. The interaction between fracture and dielectric breakdown is able to occur
since the filler inside a crack will change the dielectric behaviors around it and dielectric breakdown can
change the local mechanical properties of dielectric materials because of its weakening of chemical bonds.
Therefore, a comprehensive and in-depth understanding of the fracture and dielectric breakdown behavior
of ferroelectric materials and their interaction is very important for the advanced and reliable application
of ferroelectric materials. A phase field model was developed to investigate the coupling evolution behavior
of polarization, fracture and dielectric breakdown in ferroelectric materials subjected to both mechanical
and electrical loadings. Driving forces for fracture and dielectric breakdown were analysed based on the
generalized configurational forces. The phase field simulations showed that dielectric breakdown can be
induced by the concentrated electric field at impermeable crack tips. At the same time, the dielectric
breakdown can influence the stress distribution around the crack tip as well as the driving force for crack
propagation. The attraction of fracture to breakdown path and the deflection of breakdown to fracture path
were observed during the coupling evolution of fracture and breakdown. The developed model framework
can be employed to investigate more complex coupling failure behaviours of ferroelectric and dielectric
materials.
Keywords
Cite This Article
APA Style
Zhang, Y., Wang, J. (2023). Phase field modeling of coupling evolution of polarization, fracture and dielectric breakdown in ferroelectric materials. The International Conference on Computational & Experimental Engineering and Sciences, 27(1), 1-1. https://doi.org/10.32604/icces.2023.09368
Vancouver Style
Zhang Y, Wang J. Phase field modeling of coupling evolution of polarization, fracture and dielectric breakdown in ferroelectric materials. Int Conf Comput Exp Eng Sciences . 2023;27(1):1-1 https://doi.org/10.32604/icces.2023.09368
IEEE Style
Y. Zhang and J. Wang, "Phase Field Modeling of Coupling Evolution of Polarization, Fracture and Dielectric Breakdown in Ferroelectric Materials," Int. Conf. Comput. Exp. Eng. Sciences , vol. 27, no. 1, pp. 1-1. 2023. https://doi.org/10.32604/icces.2023.09368