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A constitutive model for the finite-element simulation of sintering - distortions and internal stresses.

Stoffgesetze für die Finite-Elemente-Simulation des Sinterns - Spannungen und Verzug
: Riedel, H.

Messing, G.L.; Hirano, S.; Hausner, H. ; American Ceramic Society -ACerS-, Westerville/Ohio:
Ceramic powder science III
Westerville, Ohio: American Ceramic Society, 1990 (Ceramic Transactions 12)
ISBN: 0-944904-28-9
International Conference on Ceramic Powder Processing Science <3, 1990, San Diego/Calif.>
Fraunhofer IWM ()
constitutive equation; distortion; finite element analysis; finite elemente; Finite-Elemente-Methode (FEM); heißisostatisches Pressen; hot isostatic pressing; innere Spannung; internal stress; sintering; Sintern; Stoffgesetz; Verzug

Constitutive equations for the mechanical behavior of a sintering solid are derived from a microscopic model. The shrinkage and shear deformation of a microstructure with hexagonal grains and pores at the triple points are assumed to occur by grain boundary diffusion. The resulting constitutive equations are implemented into a finite-element program. As an example, the hipping of a finite cylinder with a denser core and a less dense mantle is analyzed.