0

Full Content is available to subscribers

Subscribe/Learn More  >

Preform Design for Forging Processes Based on Geometrical Resemblance

[+] Author Affiliations
Chen Yang, Gracious Ngaile

North Carolina State University, Raleigh, NC

Paper No. MSEC2009-84253, pp. 583-591; 9 pages
doi:10.1115/MSEC2009-84253
From:
  • ASME 2009 International Manufacturing Science and Engineering Conference
  • ASME 2009 International Manufacturing Science and Engineering Conference, Volume 1
  • West Lafayette, Indiana, USA, October 4–7, 2009
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-4361-1 | eISBN: 978-0-7918-3859-4
  • Copyright © 2009 by ASME

abstract

Preform design is critical for multi-stage forging processes to ensure the production of defects-free parts. Moreover due to the geometry and material flow complexities in forging processes, finding the optimal preform shapes could be difficult and time consuming. This paper proposes an efficient preform design methodology based on geometrical resemblance which requires a few FEA simulation iterations to obtain a good preform shape. The premise of this methodology is such that the initial and subsequent simulations are carried out by constructing a slightly larger part which geometrically resembles the desired part. Initial FEA simulation of the larger part is performed with reasonably guessed preform shape which may allow the occurrence of forming defects or flash formation. Then a series of intermediate resembling parts between the largest part and the desired part are constructed. The undeformed shape corresponding to the intermediate part could be obtained by backward tracing of material flow from the simulation results of the larger part. This undeformed shape is then taken as the preform shape of the intermediate part. The procedure is repeated until the intermediate part is geometrically close to the desired part, which leads to the preform shape. In order to verify this preform design methodology, several case studies on forging and extrusion processes have been carried out. The methodology has been proven to be computationally efficient since it requires fewer numbers of iterations.

Copyright © 2009 by ASME
Topics: Forging , Design , Preforms

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In