• Home
  • Browse
    • Current Issue
    • By Issue
    • By Author
    • By Subject
    • Author Index
    • Keyword Index
  • Journal Info
    • About Journal
    • Aims and Scope
    • Editorial Board
    • Publication Ethics
    • Indexing and Abstracting
    • Related Links
    • FAQ
    • Peer Review Process
    • News
  • Guide for Authors
  • Submit Manuscript
  • Reviewers
  • Contact Us
 
  • Login
  • Register
Home Articles List Article Information
  • Save Records
  • |
  • Printable Version
  • |
  • Recommend
  • |
  • How to cite Export to
    RIS EndNote BibTeX APA MLA Harvard Vancouver
  • |
  • Share Share
    CiteULike Mendeley Facebook Google LinkedIn Twitter
Journal of Advanced Materials and Processing
arrow Articles in Press
arrow Current Issue
Journal Archive
Volume Volume 7 (2019)
Volume Volume 6 (2018)
Volume Volume 5 (2017)
Issue Issue 4
Issue Issue 3
Issue Issue 2
Issue Issue 1
Volume Volume 4 (2016)
Volume Volume 3 (2015)
Volume Volume 2 (2014)
Volume Volume 1 (2013)
Samandari, M., Torabi, S., Faraji, G. (2017). Upper bound and numerical analysis of cyclic expansion extrusion (CEE) process. Journal of Advanced Materials and Processing, 5(2), 75-86.
M. M. Samandari; S.H.R. Torabi; Ghader Faraji. "Upper bound and numerical analysis of cyclic expansion extrusion (CEE) process". Journal of Advanced Materials and Processing, 5, 2, 2017, 75-86.
Samandari, M., Torabi, S., Faraji, G. (2017). 'Upper bound and numerical analysis of cyclic expansion extrusion (CEE) process', Journal of Advanced Materials and Processing, 5(2), pp. 75-86.
Samandari, M., Torabi, S., Faraji, G. Upper bound and numerical analysis of cyclic expansion extrusion (CEE) process. Journal of Advanced Materials and Processing, 2017; 5(2): 75-86.

Upper bound and numerical analysis of cyclic expansion extrusion (CEE) process

Article 8, Volume 5, Issue 2, Spring 2017, Page 75-86  XML PDF (1.12 MB)
Document Type: Research Paper
Authors
M. M. Samandari1; S.H.R. Torabi1; Ghader Faraji email 2
1University of Tehran
2Department of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran
Abstract
Deformation of the material during cyclic expansion extrusion (CEE) is investigated using upper-bound theorem. The analytical approximation of forming loads agrees very well with the FEM results for different amounts of chamber diameter, friction factor and also for lower die angles. However, the difference between analytical and numerical solution increases at higher die angles which are explained by the formation of dead-metal zones at these angles. The results show that the forming load increases at higher friction coefficients, higher chamber diameters and lower amounts of corner fillet radius, but for the die angle there is a maximum value of laod at about 60o. Forming load enhanced by the increase of the die chamber diameter and friction factor. Increasing the die chamber diameter causes to higher strains and, therefore, higher rate of homogenous work. The load decreased slightly by an increase of die corner radius because of the lower and more homogeneous strain distribution in the material.
Keywords
Severe plastic deformation; Cyclic expansion extrusion; Upper bound analysis; Finite element method
Main Subjects
Metallurgical Modeling
Statistics
Article View: 356
PDF Download: 421
Home | Glossary | News | Aims and Scope | Sitemap
Top Top

Journal Management System. Designed by sinaweb.