Die compaction of copper powder designed for material parameter identification
| Autor: | Stefan Hartmann, O. Michailov, Wolfgang Bier, Nachum Frage, Moshe P. Dariel |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Materials science
business.product_category business.industry Mechanical Engineering Constitutive equation Compaction Internal pressure Structural engineering Elasticity (physics) Condensed Matter Physics Granular material Mechanics of Materials Finite strain theory Metal powder Die (manufacturing) General Materials Science Composite material business Civil and Structural Engineering |
| Zdroj: | International Journal of Mechanical Sciences. 49:766-777 |
| ISSN: | 0020-7403 |
| DOI: | 10.1016/j.ijmecsci.2006.09.026 |
| Popis: | This article presents uniaxial compaction experiments of a fine copper powder in a cylindrical die. The compaction process consists of monotonic loading and of loading paths with inserted unloading and reloading cycles. An experimental setup that has been developed for determining the axial and radial stresses during the compaction is described and the calibration of the new device using highly accurate p-finite element simulations of the dies response to internal pressure is shown. The experimental results were subsequently used for the identification of the material parameters of a constitutive model for granular materials recently proposed by Bier and Hartmann [A finite strain constitutive model for metal powder compaction using a unique and convex single surface yield function. accepted for publication by European Journal of Mechanics, Series A/Solids 2006.]. The identification of the elasticity parameters was treated with special attention. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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