Paper Title:
Finite Element Calculation of Sintering Deformation Using Limited Experimental Data
  Abstract

Predicting the sintering deformation of ceramic powder compacts is very important to manufactures of ceramic components. In theory the finite element method can be used to calculate the sintering deformation. In practice the method has not been used very often by the industry for a very simple reason – it is more expensive to obtain the material data required in a finite element analysis than it is to develop a product through trial and error. A finite element analysis of sintering deformation requires the shear and bulk viscosities of the powder compact. The viscosities are strong functions of temperature, density and grain-size, all of which change dramatically in the sintering process. There are two ways to establish the dependence of the viscosities on the microstructure: (a) by using a material model and (b) by fitting the experimental data. The materials models differ from each other widely and it can be difficult to know which one to use. On the other hand, obtaining fitting functions is very time consuming. To overcome this difficulty, Pan and his co-workers developed a reduced finite element method (Kiani et. al. J. Eur. Ceram. Soc., 2007, 27, 2377-2383; Huang and Pan, J. Eur. Ceram. Soc., available on line, 2008) which does not require the viscosities; rather the densification data (density as function of time) is used to predict sintering deformation. This paper provides an overview of the reduced method and a series of case studies.

  Info
Periodical
Edited by
Ping Xiao and Brian Ralph
Pages
103-118
DOI
10.4028/www.scientific.net/MSF.606.103
Citation
J. Z. Pan, R. Y. Huang, "Finite Element Calculation of Sintering Deformation Using Limited Experimental Data", Materials Science Forum, Vol. 606, pp. 103-118, 2009
Online since
October 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Zou Shun Zheng, Yuan Peng Zhu, Qin Wu Xu, Xuan Hui Qu
Abstract:Metal powders behave high strain rate, viscous effect and first hardening then softening deformation characteristics during the forming...
1154
Authors: Hua Shan Zhang, Yi Xia Zhang
Abstract:A micromechanical elastic-plastic bridging constitutive model is developed in this paper for accurate representation of material behavior of...
2459
Authors: Mohammad Tahaye Abadi
Abstract:A viscoelastic model is developed to describe the mechanical response of fiber-reinforced elastomeric composites at large deformation. A...
603
Authors: Li Hong Yang, Jia Qu, Yun Zeng He
Abstract:The logarithmic strain is more suitable for analyzing large strain problems because the volume invariability condition in small deformation...
424
Authors: Qing Qiang He, Jia Sun, Jun You Zhao, Bao Min Yuan, Li Jian Xu
Chapter 3: Chemical, Biological, Composites, Functional Materials Science and Technology
Abstract:In order to optimize the hot deformation processing, useful and efficient mathematical models able to evaluate the different aspects of the...
325