Journal article
FE Simulation of Die Compaction of Cylindrical Sample and Subsequent Diametrical Compression Test
Advances in Powder Metallurgy & Particulate Materials - 2006
01 Jan 2006
Abstract
A Drucker-Prager/Cap model was implemented in a User Subroutine (VUMAT) of the commercial finite element program ABAQUS within which the stresses are integrated using explicit Euler-forward method. The material parameters that control the shape of the yield surface are considered to be functions of relative density and are calibrated from experimental measurements. The die compaction of cylindrical sample was analyzed. It was shown that the finite element analysis can predict the density distribution in the sample and can provide insight for its mechanical performance during handling. The effect of the die wall lubrication conditions was found to be very strong. Extremes in lubrication conditions (clean vs. fully lubricated die) result in opposite trends in density distribution in geometrically identical samples, in good agreement with experimental results. By using the compaction predictions as initial conditions, a 3D finite element analysis of diametrical compression test was also performed. Force-displacement prediction compares reasonably well with experimental data but prediction of failure mode is not always possible.
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Details
- Title
- FE Simulation of Die Compaction of Cylindrical Sample and Subsequent Diametrical Compression Test
- Creators
- Wenhai WangAntonios Zavaliangos
- Publication Details
- Advances in Powder Metallurgy & Particulate Materials - 2006
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Identifiers
- 991019173997204721