Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Stress Intensity Factors for a Crack in a Nonlinear Electrostrictive Material

비선형 전왜재료 내부의 균열에 대한 응력 확대계수

  • Beom, Hyeon-Gyu (Dept.of Mechanical Engineering, Chonnam National Universityisy) ;
  • Jeong, Eun-Do (Dept.of Mechanical Engineering, Graduate School of Chonnam National Universityisy)
  • 범현규 (전남대학교 기계공학과) ;
  • 정은도 (전남대학교 기계공학과 대학원)
  • Published : 2001.02.01
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Abstract

A crack with electrically impermeable surfaces in an electrostrictive material subjected to uniform electric loading is analysed. The effect of electric yielding on stress intensity factor is investigated by using a small scale yielding model and a strip yield zone model. Complete forms of electric fields and elastic fields are derived by using complex function theory. The electrical yield zone shapes for two models are different each other. The two models, however, predict similar yield zone sizes under the small scale yielding conditions. It is found that the influence of electric yielding on the stress intensity factor is insensitive to the modeling of the electrical yield zone shape.

Keywords

References

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