Macro-micro modeling for coupled elasto-creep and thermal analyses under sintering

Macro-micro modeling is proposed as a new method of sintering analysis for quantitative evaluation of geometric changes in green and brown materials t ogether with precise prediction of their microscopic shrinkage in sintering . Variational principles in the elasto creep frame are utilized to make for mulations both for macro and micro models and to simulate time history of g eometric configuration, creep strains and stresses by time incremental proc edure. Another macro-micro modeling for heat transfer problem is formulated for coupling with the elasto-creep model to consider the effect of heat tr ansfer under the sintering process. Several numerical examples are employed to verify the validity and effectiveness of the present method. Published by Elsevier Science S.A.