세라믹스 분말 가압 성형 공정 변수 설계(1부:유한요소 해석)
Design of ceramics powder compaction process parameters (Part I : Finite element analysis)
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초록
세라믹 분말 가압 성형 공정을 전산모사 하고 패킹의 임의성과 입자 배열의 효과를 평가하기 위해서 유사한 임의 다중 입자 배열을 사용하여 2차원 막대 배열 가압 성형 모델을 도입하였다. 3개의 Al2O3 입자와 3개의 Al 입자를 가지고 기공과 관련된 가압 성형 공정을 균질화 탄성계수를 사용하여 외연적 유한요소 해석하였다. 해석 결과는 이전 해석 결과 및 실험 결과와 비교하였다. 마지막으로, 분말 입자의 마찰계수와 상대밀도의 관계를 얻기 위한 해석이 수행되었다.
Abstract
In order to simulate the powder compaction process and to assess the effects of packing randomness and particle arrangement 2-dimensional model of rod array compaction using quasi-random multiparticle array is introduced. The elastic modulus of porous ceramics is computed by the homogenization method. With 3 Al2O3 and 3 Al particles the compaction processes associated with the porosities are simulated by the explicit finite element method, based on the elastic modulus found by the homogenization method. The simulation results are compared with both previous analytical ones and experimental measurements. Finally, in order to find the relationship between the friction coefficient of powder particles and the relative density, the sensitivity analysis is performed.
참고문헌 (7)
- W. Wu, "？Experimental and numerical investigation of idealized consolidation part 1", pp.4323~ (2000)
- G. Jiang, "？Experimental and numerical investigation of idealized consolidation part 2", pp.4331~ (2000)
- T.A. Deis, "？X-ray computed tomography for evaluation of density gradient formulation during the compaction of sparay-dried granules? Journal of the American Ceramic Society 81", pp.1237~ (1998)
- P. Lu, "？X-ray computed tomography and mercury porosimetry for evaluation of density evolution and porosity distribution? Journal of the American Ceramic Society 83", pp.518~ (2000)
- P.K. Lu, "？Effect of density gradients on dimensional tolerance during binder removal? Journal of the American Ceramic Society 83", pp.2536~ (2000)
- P.K. Lu, "？Density gradients and sintered dimensional tolerance in compacts formed from spray-dried alumina? Journal of the American Ceramic Society 83", pp.1393~ (2000)
- C.M. Kong, "？Effect of agglomerate size distribution on loose packing fraction? Journal of the American Ceramic Society 83", pp.2183~ (2000)