Microscopic approach of powder compaction using finite element method

✍ Scribed by K. Mori; R. Kuzime

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 547 KB
• Volume: 44
• Category: Article
• ISSN: 0020-7403
• DOI: 10.1016/s0020-7403(02)00002-4

✦ Synopsis

An approach for simulating microscopic densiÿcation behaviour of powder particles in compaction using a ÿnite element method is proposed. In this method, the contacts between powder particles during the compaction are detected, and plastic deformation of the particles is calculated by the ÿnite element method for a porous metal. The ÿnite element mesh is generated by connecting the centres of the particles in contact. It is assumed that the ÿnite elements are porous metals having an average relative density calculated from the volumes of the powder and pore inside the element. The elements are classiÿed into the triangular and quadrilateral ones used in the conventional ÿnite element methods and a linear one for the simple compression. The accuracy of the sti ness for plastic deformation of the particles is improved by applying the ÿnite element method. The calculated plastic deformation of powder particles in plane-strain compaction is compared with that for a model experiment using aluminium rods.