Title :
An impermeable circular-arc crack in an electrostrictive material
Author :
Shi-juan Wang ; Cun-fa Gao
Author_Institution :
State Key Lab. of Mech. & Control of Mech. Struct., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
The two-dimensional problem of an impermeable circular-arc crack in an infinite electrostrictive solid subjected to pure electric loads at infinity is investigated. Based on Muskhelisvili´s theory, explicit solutions are obtained for an impermeable crack by taking Maxwell stress and electrical body force into account. The model used in this paper shows that there is more than one singularity in pseudo total stress at the crack tip. In addition, numerical results are given to discuss the effects of electric field and central angle on the stress intensity factor.
Keywords :
crack-edge stress field analysis; electrostriction; internal stresses; Maxwell stress; Muskhelisvilis theory; circular-arc crack; crack tip; electric field effects; electric loads; electrical body force; electrostrictive material; electrostrictive solid; impermeable crack; pseudototal stress; stress intensity factor; Electric fields; Electric potential; Force; Load modeling; Solids; Stress; Circular-arc crack; Electrostrictive; Muskhelisvili´s theory;
Conference_Titel :
Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA), 2012 Symposium on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4673-4814-0
DOI :
10.1109/SPAWDA.2012.6464128
