Please use this identifier to cite or link to this item:
Title: A plasticity model for powder compaction processes incorporating particle deformation and rearrangement
Authors: Chandler, HW
Sands, CM
Song, JH
Withers, PJ
McDonald, SA
Keywords: Granular materials;Finite element analysis;Modelling;Dilatancy;Powders
Issue Date: 2008
Publisher: Elsevier
Citation: International Journal of Solids and Structures, 45(7-8), 2056 - 2076, 2008
Abstract: This paper develops a mechanistic model of granular materials that can be used with a commercial finite element package (ABAQUS). The model draws on the ideas of critical state soil mechanics and combines them with the theory of envelopes to develop an elasto-plastic model with a non-associated flow rule. The model incorporates both local deformation at the granule contacts, and rearrangement of the granules so that jointly they account for any bulk deformation. The mechanics of the model closely reflect the physicality of the material behaviour and the model parameters are closely linked (although not simplistically identical) to the characteristics of the granules. This not only gives an insight into the material behaviour, but also enables the model to be used to facilitate design of the material, its processing properties and, hence, component development. The model is used to simulate drained triaxial tests, settlement of a powder in a bin, and some examples of die pressing. Simulations are compared with experimental data and with predictions obtained using other models.
Description: This article is available open access through the publisher’s website at the link below. Copyright @ 2008 Elsevier Ltd.
ISSN: 0020-7683
Appears in Collections:Mechanical and Aerospace Engineering
Dept of Mechanical and Aerospace Engineering Research Papers

Files in This Item:
File Description SizeFormat 
Notice.pdf40.41 kBAdobe PDFView/Open

Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.