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Determination Of Cap Model Parameters Using Numerical Optimization Method For Powder Compaction, Cong Lu
Determination Of Cap Model Parameters Using Numerical Optimization Method For Powder Compaction, Cong Lu
Dissertations (1934 -)
Many advantages are inherent to the successful powder metallurgy (P/M) process especially in high volume manufacturing. The strength/density distribution of the compacted product is crucial to overall success. The finite element analysis (FEA) method has become an effective way to numerically simulate strength/density distribution in a P/M compact. The modified Drucker-Prager cap (DPC) model has been shown to be a suitable constitutive relationship for metal powder compaction simulation. The calibration of the modified DPC model involves a procedure known as a triaxial compression test. Equipment for completing a triaxial compression test on metal powders is neither readily available nor standardized …