Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌)
Online ISSN : 1882-1022
Print ISSN : 0914-5400
論文
モンテカルロ法と有限要素法の連成による焼結のミクロ-マクロシミュレーション
森 謙一郎松原 秀彰野口 寛洋清水 正義野村 浩
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2003 年 111 巻 1295 号 p. 516-520

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A micro-macro method for simulating a sintering process of ceramic powder compacts based on the Monte Carlo and finite element methods is proposed. Macroscopic non-uniform shrinkage during the sintering is calculated by the viscoplastic finite element method. In the microscopic approach using the Monte Carlo method, powder particles and pores among the particles are divided into many cells, and the growth of grains in the particles and the disappearance of pores are simulated by means of the Potts model. The microscopic and macroscopic approaches are combined by exchanging microscopic and macroscopic information in each step. In the Monte Carlo method, the effect of macroscopic plastic deformation on the microstructural change is taken into consideration by including plastic strain-rate calculated by the finite element method in the disappearance frequency of pore cells. The shrinkage behavior in the sintering of circular two-layer compacts is simulated by the proposed micro-macro method.

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© 2003 The Ceramic Society of Japan
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