You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    Volume 46, Issue 3 (May 2018)

    Modeling of Anisotropic Behavior of Aluminum Alloys to Investigate Ductile Fracture for the Improved Formability in the Upsetting Process

    (Received 23 June 2016; accepted 30 January 2017)

    Published Online: 2017

    CODEN: JTEVAB

      Format Pages Price  
    PDF (886.66 KB) 10 $25   ADD TO CART

    Cite this document

    X Add email address send
    X
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word



    Abstract

    In the bulk-forming operations, such as upsetting, the billets upon severe plastic deformation will fracture on reaching the threshold fracture stress. The fracture initiation and progression depends on the friction, height-to-diameter ratios (h/d), and the strength of the material. The anisotropic behavior of material is another issue that should be taken into consideration while designing the process. Macro fracture criteria, such as normalized Cockcroft, Brozzo, McClintock, and Oyane, can be better utilized to predict the fracture initiation. The Hill–von Mises criterion that incorporates the anisotropy factors (R0 and R90) was correlated with the macro failure criterion to evaluate the critical damage factor values at failure strain under plane stress condition. The process parameters, namely, friction, height-to-diameter ratios (h/d), and the strength of the material were considered, and the upsetting process was optimized using Taguchi’s design of experiment techniques with less anisotropy as desired output. After identifying the optimum result, an analysis of variance (ANOVA) analysis was performed and the contribution of each factor responsible for failure and anisotropy was also noted.

    Author Information:

    Chirala, H. K.
    Dept. of Mechanical Engineering, Shri Vishnu Engineering College for Women, Vishnupur, Bhimavaram

    Davidson, M. J.
    Dept. of Mechanical Engineering, National Inst. of Technology, Warangal

    Srinivasarao, G.
    Dept. of Mechanical Engineering, Shri Vishnu Engineering College for Women, Vishnupur, Bhimavaram

    Srinivasaraju, P.
    Dept. of Mechanical Engineering, Shri Vishnu Engineering College for Women, Vishnupur, Bhimavaram


    Stock #: JTE20160591

    ISSN:0090-3973

    DOI: 10.1520/JTE20160591

    Author
    Title Modeling of Anisotropic Behavior of Aluminum Alloys to Investigate Ductile Fracture for the Improved Formability in the Upsetting Process
    Symposium ,
    Committee A01