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Effect of Columbic Force on Piezoelectric Fracture

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Abstract:

This paper studies the effect of the Columbic force on piezoelectric fracture. Bound charges emerge on the upper and lower surfaces of a permeable crack when a piezoelectric solid with the crack is subjected to far-field mechanical/electric loading. Taking into account the Columbic force between the bound charges, we obtain a non-linear equation governing the normal component of electric displacement D2(x1)on the crack faces. The results show that D2(x1)is, in general, not a constant along the crack faces and depends on the mechanical/electric loading conditions, the crack profile and the material properties outside and inside the crack. Furthermore, we examine the Columbic force under low mechanical/electric loads and then discuss the effect of the Columbic force on the fracture behaviour of piezoelectric materials.

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Periodical:

Key Engineering Materials (Volumes 261-263)

Pages:

81-86

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.261-263.81

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Online since:

April 2004

Authors:

Cun Fa Gao, Pin Tong, Tong Yi Zhang

Keywords:

Columbic Force, Electrical Coupling, Mechanical Coupling, Nonlinear Electric Boundary Condition, Permeable Crack, Piezoelectric Fracture

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© 2004 Trans Tech Publications Ltd. All Rights Reserved

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References

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