Development of an accurate process model for microscale forward extrusion

Richard M. Onyancha*, Brad L. Kinsey, Neil Krishnan, Jian Cao

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

The current sustained trend toward increased miniaturization has created a need for models that can be used to accurately predict process forces at the microscale level. These process models should adequately incorporate size effects (i.e. variations in the material and process parameters with miniaturization). There are two types of size effects, specimen size effects and grain size effects (Armstrong 1961). In this paper a new process model is developed for the prediction of the peak force for a microscale forward extrusion process. This model is based on an upper bound slab analysis model that is used at the macroscale level [Altan et al. (1983)]. This new microscale model was developed to account for increased shear deformation in the center of the pins that is observed as the grain size is increased and/or the specimen size reduced, The microscale model provided more accurate predictions of the peak extrusion force for the microscale specimens.

Original languageEnglish (US)
Title of host publicationTransactions of the North American Manufacturing Research Institution of SME 2007 - Papers Presented at NAMRC 35
Pages121-128
Number of pages8
StatePublished - Aug 22 2007
Event35th North American Manufacturing Research Conference, NAMRC 35 - Ann Arbor, MI, United States
Duration: May 22 2007May 25 2007

Publication series

NameTransactions of the North American Manufacturing Research Institution of SME
Volume35
ISSN (Print)1047-3025

Other

Other35th North American Manufacturing Research Conference, NAMRC 35
CountryUnited States
CityAnn Arbor, MI
Period5/22/075/25/07

Keywords

  • Metal forming
  • Microextrusion
  • Process models
  • Size effects

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

Fingerprint Dive into the research topics of 'Development of an accurate process model for microscale forward extrusion'. Together they form a unique fingerprint.

Cite this