A finite element model for ejection of green parts in PM compaction

Using industrial partner experimental data for powder metal compaction, a Finite Element Analysis (FEA) model has been developed for the ejection phase of green parts in the powder metallurgy process. This paper describes development of that model which will be used by industry. The model will provide engineers with the opportunity to study the friction in the ejection process, the nature of which is largely unexplored to date. Included in the paper is a description of the model and relevant details. Also a description of the design of a testing apparatus, and the method of friction sensing that will be used to validate future results, is given. A friction model is developed for PM ejection and an FE model is created, using industrial data, as a first step to better represent friction in ejection as compared to past work. Validation is carried out via comparison to past work.