20. February 2018
Abstract The mechanical behavior of powders during die compaction was investigated using the discrete element method (DEM), in which powders are modeled as discrete particles with elastoplastic material behavior. A new adhesive elastoplastic contact model that describes the force displacement behavior of contacting particles subjected to high confining conditions was introduced and implemented in DEM simulations of die compaction and uniaxial tension. The objectives of these simulations were:...
03. July 2017
The effect of friction on compact properties and breakage patterns was studied.
Particle-wall friction mainly affects the particle deformation region in particle densification.
Particle-particle friction mainly affects the initial stage in particle densification.
Compressive strength decreases with particle-wall friction but increases with particle-particle.
Compact failure pattern is linked to the breakage of inter-particle bonds.