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Modelling methods in pressing simulations of metal powder components
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.
1998 (English)In: Simulation of materials processing : theory, methods and applications: international conference on numerical methods in industrial forming processes, NUMIFORM '98 / [ed] J. Huétink; F.P.T. Baaijens, Rotterdam: Balkema Publishers, A.A. / Taylor & Francis The Netherlands , 1998, 397-402 p.Conference paper (Refereed)
Abstract [en]

The process of pressing metal powder to net shape with subsequent sintering is very important for the automotive industry and similar industries with production of metal components in large quantities. The development of products and tools for the pressing of the products is a very time consuming and costly process. It is of great importance for the industry to be able to predict the result of the pressing operation with respect to the powder flow and final density distribution. With this knowledge the time and cost for product development, tool manufacturing and tool testing can be significantly reduced. In this work a set of methods used for analyses of the pressing process are presented. The methods used are based on an explicit finite element formulation with arbitrary Lagrangian Eulerian formulation. The material model used is a cap-plasticity model. The contact constraint are imposed with a method based on explicit integration of the contact interface equations in order to determine the contact forces. The contact algorithm includes a non-linear friction model with parameters based on experimental observations. An analysis of a pressed component is presented and compared with experimental results.

Place, publisher, year, edition, pages
Rotterdam: Balkema Publishers, A.A. / Taylor & Francis The Netherlands , 1998. 397-402 p.
Research subject
Solid Mechanics
URN: urn:nbn:se:ltu:diva-35756Local ID: a69aeeb0-f96b-11db-b2dd-000ea68e967bISBN: 90-5410-970-x OAI: diva2:1009010
International Conference on Numerical Methods in Industrial Forming Processes : 22/06/1998 - 25/06/1998
Godkänd; 1998; 20070503 (cira)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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Wikman, BengtOldenburg, MatsHäggblad, Hans-åke
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