Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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An Effective Approach of Equivalent Elastic Method for Three-Dimensional Finite Element Analysis of Ceramic Honeycomb Substrates

세라믹 하니컴 담체의 3차원 유한요소해석을 위한 등가탄성방법의 효과적인 접근

  • 백석흠 (동아대학교 기계공학과 BK21) ;
  • 조석수 (강원대학교 자동차공학과)
  • Received : 2010.06.03
  • Accepted : 2011.01.13
  • Published : 2011.03.01
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Abstract

A ceramic monolithic catalyst is a honeycomb structure that consists of two layers. The honeycomb structure is regarded as a continuum in structure and heat-flow analysis. The equivalent mechanical properties of the honeycomb structure were determined by performing finite element analysis (FEA) for a test specimen. Bending strength experiments and FEA of the test specimen used in ASTM C1674-08 standard test were performed individually. The bonding coefficient between the cordierite ceramic layer and the washcoat layer was almost zero. The FEA test specimen was modeled on the basis of the bonding coefficient. The elastic modulus, Poisson's ratio, and the thermal properties of the ceramic monolithic substrate were determined by performing the FEA of the test specimen.

세라믹 모노리스 촉매는 두 계층으로 구성된 하니컴 구조이다. 하니컴 구조는 열유동 및 구조해석에서 연속체로 고려한다. 하니컴 구조의 등가 기계적 물성은 유한요소해석(FEA) 시험편으로부터 얻어진다. 강도 시험과 FEA는 ASTM C1674-08에서 소개된 사각 단위 셀 시험편과 시험방법에 의해 각각 달성되었다. 코제라이트 세라믹 층과 워시코트 층 사이의 접합계수는 거의 0이다. FEA 시험편은 접합계수에 기반한 모델로 만들어진다. 세라믹 모노리스 담체에서 탄성계수, 푸아송 비와 열적 물성은 FEA 시험편에 의해 결정하였다.

Keywords

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