Study of particle rearrangement during powder compaction by the discrete element method
This paper presents simulations of cold isostatic and closed die compaction of powders
based on the Discrete Element Method. Due to the particulate nature of powders …
based on the Discrete Element Method. Due to the particulate nature of powders …
On the cold compaction of powders
NA Fleck - Journal of the Mechanics and Physics of Solids, 1995 - Elsevier
Constitutive models are developed for stage I cold compaction of powders under general
loading. Densification is assumed to occur by plastic deformation at the isolated contacts …
loading. Densification is assumed to occur by plastic deformation at the isolated contacts …
The effect of wall friction in the compaction of pharmaceutical tablets with curved faces: a validation study of the Drucker–Prager Cap model
IC Sinka, JC Cunningham, A Zavaliangos - Powder Technology, 2003 - Elsevier
The compaction of porous materials can be modelled using micromechanical or
phenomenological approaches. The micromechanical models are developed for either …
phenomenological approaches. The micromechanical models are developed for either …
Additive particle deposition and selective laser processing-a computational manufacturing framework
TI Zohdi - Computational Mechanics, 2014 - Springer
Many additive manufacturing technologies involve the deposition of particles onto a surface
followed by selective, targeted, laser heating. This paper develops a modular computational …
followed by selective, targeted, laser heating. This paper develops a modular computational …
Study of the cold compaction of composite powders by the discrete element method
We present numerical simulations of the cold isostatic and close die compaction of mixtures
of soft and hard powders. The simulations use the discrete element method with periodic …
of soft and hard powders. The simulations use the discrete element method with periodic …
Mechanical modelling of indentation-induced densification in amorphous silica
Despite their brittleness, silicate glasses undergo plastic deformation at the microscopic
scale. Mechanical contact and indentation are the most common situations of interest. The …
scale. Mechanical contact and indentation are the most common situations of interest. The …
A direct particle-based computational framework for electrically enhanced thermo-mechanical sintering of powdered materials
TI Zohdi - Mathematics and Mechanics of Solids, 2014 - journals.sagepub.com
As a method for bonding powdered materials, sintering has distinct advantages, such as the
production of a near final-shape of the desired product, without the need for significant post …
production of a near final-shape of the desired product, without the need for significant post …
Cold plastic compaction of powders by a network model
PR Heyliger, RM McMeeking - Journal of the Mechanics and Physics of …, 2001 - Elsevier
A network model is used to study the cold compaction of metal powders. The network model
is constructed by assuming that a powder aggregate is formed by a collection of perfectly …
is constructed by assuming that a powder aggregate is formed by a collection of perfectly …
Surface oxidization effect on the mechanical behavior of aluminum nanopowders under triaxial compression test
In this paper, the impression of surface oxidization on the aluminum nanopowders is
investigated using the reactive molecular dynamics (MD) method under the triaxial …
investigated using the reactive molecular dynamics (MD) method under the triaxial …
Constitutive equations for metal powders: application to powder forming processes
A new constitutive model for cold compaction of metal powders is developed. The plastic
flow of metal powders at the macroscopic level is assumed to be representable as a …
flow of metal powders at the macroscopic level is assumed to be representable as a …