Numerical modeling of cold powder compaction using multi particle and continuum media approaches
Küçük Resim Yok
Tarih
2015
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Numerical analysis of powder compaction process requires multi-particle modeling approach as continuum models fail to simulate the nature of process (e.g. interparticle, and particle-die interactions), accurately. This study aimed for analyzing powder compaction process utilizing 3-D finite element modeling approach along with different material models including modified Cam-Clay, Mohr-Coulomb, Shima-Oyane and von-Mises. The finite element analyses were carried out by implementing multi-particle finite element method. Moreover, continuum modeling was also performed for comparison purposes. In both cases, the compaction of spherical copper particles was analyzed at room temperature conditions. The obtained FEA results were compared in terms of equivalent stress and strain, and deformed shape. Results showed that the FE models in which von-Mises and modified Cam-clay material models were used yielded results of similar magnitude while those of Shima-Oyane and Mohr-Coulomb material models resulted in equivalent stress and strain values are in close proximity. Effect of coefficient of friction on the results was also investigated by implementing three distinct coefficients of friction ( ?= 0.1, 0.25, 0.4). It was noted that increasing friction resulted in elevated level of deformation for the particles and harsher particle-particle, and particle-die contact interactions. © 2014 Elsevier B.V.
Açıklama
Anahtar Kelimeler
Continuum approach, Friction, Material models, Multiparticle FEA, Powder compaction, Cams, Compaction, Continuum mechanics, Friction, Tribology, 3D finite element model, Coefficient of frictions, Coefficients of friction, Continuum approach, Material models, Particle-finite element method, Powder compactions, Room-temperature conditions, Finite element method, copper, Article, biotechnological procedures, continuum media approach, controlled study, finite element analysis, friction, intermethod comparison, mathematical model, molecular interaction, multi particle finite element method, particle size, powder compaction, room temperature, stress strain relationship, Continuum approach, Friction, Material models, Multiparticle FEA, Powder compaction, Cams, Compaction, Continuum mechanics, Friction, Tribology, 3D finite element model, Coefficient of frictions, Coefficients of friction, Continuum approach, Material models, Particle-finite element method, Powder compactions, Room-temperature conditions, Finite element method, copper, Article, biotechnological procedures, continuum media approach, controlled study, finite element analysis, friction, intermethod comparison, mathematical model, molecular interaction, multi particle finite element method, particle size, powder compaction, room temperature, stress strain relationship
Kaynak
Powder Technology
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
271
