Description of Anomalous Behavior of Aluminum Alloys with Hill48 Yield Criterion by Using Different Experimental Inputs and Weight Coefficients

ŞENER B.

Journal of Applied and Computational Mechanics, vol.7, no.3, pp.1606-1619, 2021 (ESCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 7 Issue: 3
  • Publication Date: 2021
  • Doi Number: 10.22055/jacm.2021.36297.2821
  • Journal Name: Journal of Applied and Computational Mechanics
  • Journal Indexes: Emerging Sources Citation Index (ESCI), Scopus, Directory of Open Access Journals
  • Page Numbers: pp.1606-1619
  • Keywords: aluminum alloys, anisotropy, Anomalous behavior, experimental data, Hill48 yield criterion, weight coefficient
  • Yıldız Technical University Affiliated: Yes

Abstract

Abstract. The anomalous behavior of aluminum alloys is modeled with quadratic Hill48 yield criterion in this study. An identification method based on minimization of the error function is applied and the effect of the number of experimental input and weight coefficients used in the identification are investigated. Two highly anisotropic aluminum alloys (AA2090-T3 and AA5182-O) are selected in the study. Firstly, Hill48 parameters are determined with four different experimental data set, then the effect of the weight coefficients for each set is investigated. In-plane variations of plastic properties and yield surfaces of the materials are predicted with determined Hill48 parameters and the most appropriate pair (experimental data set and weight coefficient) are selected by comparison of the predicted results with experiment.