This work compares the relative importance of material anisotropy in sheet forming as compared to other material and process variables. The comparison is made quantitative by the use of normalized dependencies of depth to failure (forming limit is reached) on various measures of anisotropy, as well as strain and rate sensitivity, friction, and tooling. Comparisons are made for a variety of forming processes examined previously in the literature as well as two examples of complex stampings in this work. The examples cover a range from nearly pure draw to nearly pure stretch situations, and show that for materials following a quadratic yield criterion, anisotropy is among the most sensitive parameters influencing formability. For materials following higher-exponent yield criteria, the dependency is milder but is still of the order of most other process parameters. However, depending on the particular forming operation, it is shown that in some cases anisotropy may be ignored, whereas in others its consideration is crucial to a good quality analysis.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    The Relative Sensitivity of Formability to Anisotropy


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1997



    Publication date :

    1997-02-24




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    The Relative Sensitivity of Formability to Anisotropy

    Logan, R. W. / Maker, B. N. / Society of Automotive Engineers | British Library Conference Proceedings | 1996


    The relative sensitivity of formability to anisotropy

    Logan,R.W. / Maker,B.N. / Lawrence Livermore National Laboratory,US et al. | Automotive engineering | 1997


    Ultrasonic measurement of sheet anisotropy and formability

    Clark,A.V. / Thompson,R.B. / Reno,R.C. et al. | Automotive engineering | 1989


    The study of the impact of aluminium formability parameters on its stamping formability

    Zhang,J. / Ma,M. / Lu,H. et al. | Automotive engineering | 2012


    The Study of the Impact of Aluminum Formability Parameters on its Stamping Formability

    Zhang, J. / Ma, M. / Lu, H. et al. | British Library Conference Proceedings | 2013