TY - GEN
T1 - Non-Newtonian flowability evaluation of metallic powder binder compound in metal injection molding
AU - Iwai, Takashi
AU - Aizawa, Tatsuhiko
AU - Kihara, Junji
PY - 1993/12/1
Y1 - 1993/12/1
N2 - Metal Injection Molding deals with the complex fluid which consists of thermoplastic polymer medium and dense metallic powder suspensions to improve flowability and formability. To understand its fundamental mechanical behavior, it is important to consider powder structures and mechanics precisely. For the analysis of this process, a new granular model is proposed, which is based on the Distinct Element Method. Each element in this method is constituted by combining a metal powder with a binder (polymer) shell surrounding it. Both elasticity and viscosity for powder particles and binders are only considered in this mixture model as the constitutive relations. Thermo-mechanical coupling method with mapping/remapping procedure is introduced into the present granular model to deal with the cooling process. Several numerical results have demonstrated the effectiveness and validity of our developed granular modeling to deal with the various phenomena appearing in MIM process.
AB - Metal Injection Molding deals with the complex fluid which consists of thermoplastic polymer medium and dense metallic powder suspensions to improve flowability and formability. To understand its fundamental mechanical behavior, it is important to consider powder structures and mechanics precisely. For the analysis of this process, a new granular model is proposed, which is based on the Distinct Element Method. Each element in this method is constituted by combining a metal powder with a binder (polymer) shell surrounding it. Both elasticity and viscosity for powder particles and binders are only considered in this mixture model as the constitutive relations. Thermo-mechanical coupling method with mapping/remapping procedure is introduced into the present granular model to deal with the cooling process. Several numerical results have demonstrated the effectiveness and validity of our developed granular modeling to deal with the various phenomena appearing in MIM process.
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M3 - Conference contribution
AN - SCOPUS:0027805891
SN - 0791810380
T3 - American Society of Mechanical Engineers, Applied Mechanics Division, AMD
SP - 39
EP - 48
BT - Developments in Non - Newtonian Flows
A2 - Siginer, Dennis A.
A2 - VanArsdale, William E.
A2 - Altan, Cengiz M.
A2 - Alexandrou, Andreas N.
PB - Publ by ASME
T2 - Proceedings of the 1993 ASME Winter Annual Meeting
Y2 - 28 November 1993 through 3 December 1993
ER -