Dynamic response of a cracked piezoelectric ceramic under arbitrary electro-mechanical impact
✍ Scribed by Zeng-tao Chen; B.L. Karihaloo
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 223 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0020-7683
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✦ Synopsis
The dynamic response of a cracked piezoelectric ceramic under in!plane electric and anti!plane mechanical impact is investigated by the integral transform method[ The electric and mechanical loads are assumed to be arbitrary functions of time[ It is shown that the dynamic crack!tip stress and electric displacement _elds still have a square!root singularity[ Numerical computations for the dynamic stress intensity factor show that the electric load has a signi_cant in~uence on the dynamic response of stress _eld[ On the other hand\ the dynamic response of the electric _eld is determined solely by the applied electric _eld[ The electric _eld will promote or retard the propagation of the crack depending on the time elapsed since the application of the external electro!mechanical loads[ Þ 0888 Elsevier Science Ltd[ All rights reserved[ Corresponding author[ Tel[] 99 33 0111 763 823^fax] 99 33 0111 763 486^e!mail] karihaloobÝcardi}[ac[uk