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A new calibration method for FLCs in the M-K frame-work

Ghazanfari, A ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.4028/www.scientific.net/AMR.341-342.416
  3. Publisher: 2012
  4. Abstract:
  5. The main drawback of the method proposed by Marciniak and Kuczynski for prediction of the limit strains in sheet metal forming processes is requirement of an experimental point of the forming limit curve (FLC) in order to calibrate the curve. The purpose of this work is to introduce a new method to calibrate the FLC using the M-K model in which no experimental data is needed. To achieve this goal, many experimental FLCs were collected from the literature and the values of the initial inhomogeneity factors were determined for them with trial and error aproach. Using these data, an empirical law was developed to predict the value of inhomogeneity factor. The resultant curves show good agreement with the experiments
  6. Keywords:
  7. Calibration method ; Empirical law ; Experimental data ; Forming limit curve ; Frame-work ; Inhomogeneity factor ; Limit strains ; M-k method ; Trial and error ; Aluminum sheet ; Metal forming ; Manufacture
  8. Source: Advanced Materials Research, 8 July 2011 through 11 July 2011 ; Volume 341-342 , July , 2012 , Pages 426-431 ; 10226680 (ISSN) ; 9783037852521 (ISBN)
  9. URL: http://www.scientific.net/AMR.341-342.416