Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Analysis of Piezoelectric Ceramic Multi-layer Actuators Based on the Electro-mechanical Coupled Meshless Method

전기-기계 결합 하중을 받는 압전 세라믹 다층 작동기의 무요소 해석

  • Kim, Hyun-Chul (Department of Mechanical Engineering, ME3033, KAIST) ;
  • Guo, Xianghua (Department of Engineering Mechanics, Tsinghua University) ;
  • Kim, Won-Seok (Department of Mechanical Engineering, ME3033, KAIST) ;
  • Fang, Daining (Department of Engineering Mechanics, Tsinghua University) ;
  • Lee, Jung-Ju (Department of Mechanical Engineering, ME3033, KAIST)
  • 김현철 (한국과학기술원 기계공학과) ;
  • ;
  • 김원석 (한국과학기술원 기계공학과) ;
  • ;
  • 이정주 (한국과학기술원 기계공학과)
  • Published : 2007.03.01
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Abstract

This paper presents an efficient meshless method for analyzing cracked piezoelectric structures subjected to mechanical and electrical loading. The method employs an element free Galerkin (EFG) formulation and an enriched basic function as well as special shape functions that contain discontinuous derivatives. Based on the moving least squares (MLS) interpolation approach, The EFG method is one of the promising methods for dealing with problems involving progressive crack growth. Since the method is meshless and no element connectivity data are needed, the burdensome remeshing procedure required in the conventional finite element method (FEM) is avoided. The numerical results show that the proposed method yields an accurate near-tip stress field in an infinite piezoelectric plate containing an interior hole. Another example is to study a ceramic multilayer actuator. The proposed model was found to be accurate in the simulation of stress and electric field concentrations due to the abrupt end of an internal electrode.

Keywords

References

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