Simulation on the Direct Powder Rolling Process of Cu Powder by Drucker–Prager/Cap Model and Its Experimental Verification

For better clarifying the influence of processing factors on forming quality direct powder rolling (DPR) process, finite element simulation based modified Drucker–Prager/Cap (DPC) model was established and key physical parameters were confirmed by experimental measurements. Subsequently, effect main in DPR viz., gradation, speed gap, density morphology a green sheet discussed using an orthogonal experiment design followed verification. The is examined range analysis, which can reflect sensitivity influencing to sheet. larger value is, more sensitive factor is. This suggests that mainly influenced particle gradation. results show resulting with optimal 7.5~8.0 g/cm3, reaches 80% theoretical density, mechanical strength also afford transferring process for next sintering craft. methods modeling, obtaining numerical be used guide rapid formation metal