Khoei, Amir R.; Lewis, Roland W. Finite element simulation for dynamic large elastoplastic deformation in metal powder forming. (English) Zbl 0922.73060 Finite Elem. Anal. Des. 30, No. 4, 335-352 (1998). Summary: A transient dynamic analysis of the powder compaction process is simulated by a large displacement finite element method based on a total and updated Lagrangian formulation. A combination of the Mohr-Coulomb and elliptical yield cap model, which reflects the stress state and degree of densification, is applied to describe the constitutive model of powder materials. A Coulomb friction law and a plasticity theory of friction in the context of an interface element formulation are employed in the constitutive modelling of the frictional behaviour between the die and powder. Finally, the powder behaviour during the compaction of a plain bush, a rotational flanged and a shaped tip component are analysed numerically. It is shown that the updated Lagrangian formulation, using a combination of the Mohr-Coulomb and elliptical cap model, can be effective in simulating metal powder compaction. Cited in 12 Documents MSC: 74S05 Finite element methods applied to problems in solid mechanics 74C15 Large-strain, rate-independent theories of plasticity (including nonlinear plasticity) 74C20 Large-strain, rate-dependent theories of plasticity 74C99 Plastic materials, materials of stress-rate and internal-variable type Keywords:total Lagrangian formulation; updated Lagrangian formulation; elliptical yield cap model; Coulomb friction law; interface element formulation; plasticity theory of friction; Mohr-Coulomb model PDFBibTeX XMLCite \textit{A. R. Khoei} and \textit{R. W. Lewis}, Finite Elem. Anal. Des. 30, No. 4, 335--352 (1998; Zbl 0922.73060) Full Text: DOI