## Mechanics of granular materials and powder systems: presented at the Winter Annual Meeting of the American Society of Mechanical Engineers, Anaheim, California, November 8-13, 1992 |

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### Contents

Constitutive Models for Viscous Sintering | 1 |

Application of a Continuum Theory for Sintering to Densification Rates | 19 |

Evolution Equations for the Grain Size During Sintering | 29 |

Copyright | |

9 other sections not shown

### Common terms and phrases

Acta Metall ASME average axial Bardet beads behavior Bordia calculated capillary force Ceram co-ordination number coarsening rate composite compression test consolidation constant constitutive equations constitutive law constitutive model contact angle contact forces cylinder deformation deviatoric effective elastic elliptical particles equilibrium evolution experimental Figure glass grain boundary granular materials granular media hydrostatic stress inclusions internal state variable interparticle Jagota kinetics liquid bridge liquid volume loading macroscopic matrix McMeeking micromechanical microstructure normal numerical simulations obtained octahedral shear parameters percolation percolation threshold Petrakis plane plastic Poisson's ratio porosity porous Powder Compacts predicted pressure difference prestraining Proubet random close packing relative density response Riedel Scherer shear band shear stress shown in Fig sintering rate spheres spherical strain rate stress paths stress space stress-strain subsequent yield Svoboda tangential temperature theory threshold triaxial truss model uniaxial velocity viscosity viscous sintering void volume fraction yield function yield locus yield surface