Finite Element Analysis for High Temperature Densification Processing of Alumina Powder Compacts

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J. Korean Ceram. Soc. > Volume 31(4); 1994 > Article

Journal of the Korean Ceramic Society 1994;31(4): 347.

알루미나 분말 성형체의 고온 치밀화 성형 공정을 위한 유한요소 해석

권영삼, 김기태

포항공과대학교 기계공학과

Finite Element Analysis for High Temperature Densification Processing of Alumina Powder Compacts

ABSTRACT

Creep densification and grain growth of alumina powder compacts during high temperature processing were investigated. The creep densification and grain growth of alumina powder compacts during various sintering processes were analyzed by employing the consitutive model by Kwon and Kim. Theoretical results from the constitutive model were compared with various experimental data of alumina powder compacts in the literature including pressureless sintering, sinter forging and hot pressing. The proposed constitutive equations were implemented into finite element analysis program (ABAQUS) to simulate densification for more complicated geometry and loading conditions. The effects of friction between die and powder compact or punch and powder compact during sinter forging and hot pressing are investigated by using the finite element method. Also, high temperature forming processing of alumina compact with complicated shape was simulated.