High Pressure Triaxial Cell for Metal Powder

Dorémus, P.; Geindreau, Christian; Martin, Alexandre; Debove, L.; Lecot, R.; Dao, Ming

doi:10.1179/pom.1995.38.4.284

Cited by 47 publications

(33 citation statements)

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“…In order to demonstrate the performance of the proposed cap plasticity in prediction of powder behavior, a series of experimental tests performed by Doremus et al [24] is analyzed numerically. Both uniaxial and triaxial compression tests are driven to determine and calibrate the parameters of the model.…”

Section: Determination Of Single-cap Parametersmentioning

confidence: 99%

3D computational modeling of powder compaction processes using a three-invariant hardening cap plasticity model

Azami

Khoei

2006

Finite Elements in Analysis and Design

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Section: Determination Of Single-cap Parametersmentioning

confidence: 99%

3D computational modeling of powder compaction processes using a three-invariant hardening cap plasticity model

Azami

Khoei

2006

Finite Elements in Analysis and Design

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“…The material parameters in the constitutive model are calibrated for a sample of metal powder by fitting the model to reproduce data from isostatic compaction and triaxial tests. The experimental data are gained from a set of compaction experiments on an ironbased powder performed by Doremus et al [50]. The parameters of material for iron powder are given in Table 1.…”

Section: Numerical Simulation Resultsmentioning

confidence: 99%

Reproducing Kernel Particle Method in Plasticity of Pressure-Sensitive Material with Reference to Powder Forming Process

2006

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In this paper, an application of the reproducing kernel particle method (RKPM) is presented in plasticity behavior of pressure-sensitive material. The RKPM technique is implemented in large deformation analysis of powder compaction process. The RKPM shape function and its derivatives are constructed by imposing the consistency conditions. The essential boundary conditions are enforced by the use of the penalty approach. The support of the RKPM shape function covers the same set of particles during powder compaction, hence no instability is encountered in the large deformation computation. A double-surface plasticity model is developed in numerical simulation of pressuresensitive material. The plasticity model includes a failure surface and an elliptical cap, which closes the open space between the failure surface and hydrostatic axis. The moving cap expands in the stress space according to a specified hardening rule. The cap model is presented within the framework of large deformation RKPM analysis in order to predict the non-uniform relative density distribution during powder die pressing. Numerical computations are performed to demonstrate the applicability of the algorithm in modeling of powder forming processes and the results are compared to those obtained from finite element simulation to demonstrate the accuracy of the proposed model.

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“…In order to determine and calibrate the powder parameters of proposed plasticity model for an iron-based powder (95% by weight), a set of compaction experiments performed by Doremus et al [51] is proposed here. These experiments were carried out by Khoei and Azami [48] to present the performance of their plasticity model with isotropic hardening behavior, and then applied into the finite element code by Azami and Khoei [52] to demonstrate the simulation of powder forming processes.…”

Section: Model Parameters For Iron Powdermentioning

confidence: 99%

Arbitrary Lagrangian–Eulerian method in plasticity of pressure-sensitive material: application to powder forming processes

et al. 2008

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In this paper, an application of Arbitrary Lagrangian-Eulerian (ALE) method is presented in plasticity behavior of pressure-sensitive material, with special reference to large deformation analysis of powder compaction process. In ALE technique, the reference configuration is used for describing the motion, instead of material configuration in Lagrangian, and spatial configuration in Eulerian formulation. The convective term is used to reflect the relative motion between the mesh and the material. Each time-step is divided into the Lagrangian phase and Eulerian phase. The convection term is neglected in the material phase, which is identical to a time-step in a standard Lagrangian analysis. The stresses and plastic internal variables are converted to account the relative mesh-material motion in the convection phase. The ALE formulation is then performed within the framework of a three-invariant cap plasticity model in order to predict the non-uniform density distribution during the large deformation of powder die pressing. The plasticity model is based on a hardening rule with the isotropic and kinematic material functions. The constitutive elasto-plastic matrix and its components are derived by using the definition of yield surface, material functions and non-linear elastic behavior, as function of hardening parameters. Finally, the numerical examples are performed to illustrate the applicability of the computational algorithm in modeling of powder forming process and the results are compared with those obtained from Lagrangian simulation in order to demonstrate the accuracy of proposed model.

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High Pressure Triaxial Cell for Metal Powder

Cited by 47 publications

References 1 publication

3D computational modeling of powder compaction processes using a three-invariant hardening cap plasticity model

3D computational modeling of powder compaction processes using a three-invariant hardening cap plasticity model

Reproducing Kernel Particle Method in Plasticity of Pressure-Sensitive Material with Reference to Powder Forming Process

Arbitrary Lagrangian–Eulerian method in plasticity of pressure-sensitive material: application to powder forming processes

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