Modelling Powder Compaction

Abstract

Die compaction of powders is a process which involves filling a die with powder, compression of the powder using rigid punches to form a dense compact, and ejection from the die. The choice of powder composition and selection of process parameters determine the microstructure and final properties of the compacts. The practical issues in the powder-forming industries (powder metallurgy, ceramics, hard metals, pharmaceuticals, detergents, etc.)

Field assisted sintering technology. Part I: Experiments, constitutive modeling and parameter identification

“…18(a) suggests that the constitutive model should contain an elastic region, which can be modeled by a yield function, and remaining deformations. An overview about different plasticity models for cold powder compaction can be found in [45] and [46]. The investigated models in [45] are calibrated to experimental data in the accompanying paper, [47].…”

Discrete element simulation of powder compaction in cold uniaxial pressing with low pressure

“…Different models of powder compaction are reviewed in [4,25]. In the continuum approach, the porous powder under compaction is treated as a continuous medium at the macro-scale.…”

The Comparison of the Characteristics of Displacement Isolines in the Cylindrical Green Compact under Ultrasonic Vibration

“…The density is maximum at the top edge of green compact or under of upper punch and the next effect is shrinkage of product after sintering process is not uniform. The friction interaction between compact powder and die wall those has an important roles of powder compaction lead to density changes, increasing press, material removal force from die and die corrosion [4]. It is difficult to eliminate die wall friction in the process of conventional compaction and there are several study cases in article [5][6][7][8][9].…”