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Title: Numerical models for the prediction of failure for multilayer fusion Al-alloy sheets

Initiation and propagation of cracks in monolithic and multi-layer aluminum alloys, called “Fusion”, is investigated. 2D plane strain finite element simulations are performed to model deformation due to bending and to predict failure. For this purpose, fracture strains are measured based on microscopic pictures of Nakajima specimens. In addition to, micro-structure of materials is taken into account by introducing a random grain distribution over the sheet thickness as well as a random distribution of the measured yield curve. It is shown that the performed experiments and the introduced FE-Model are appropriate methods to highlight the advantages of the Fusion material, especially for bending processes.
Authors:
; ;  [1] ;  [2]
  1. ETH Zurich, Institute of Virtual Manufacturing, Zurich (Switzerland)
  2. Novelis Switzerland SA, 3960 Sierre (Switzerland)
Publication Date:
OSTI Identifier:
22261662
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1567; Journal Issue: 1; Conference: NUMISHEET 2014: 9. international conference and workshop on numerical simulation of 3D sheet metal forming processes, Melbourne (Australia), 6-10 Jan 2014; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICAL METHODS AND COMPUTING; 36 MATERIALS SCIENCE; ALUMINIUM ALLOYS; BENDING; CRACKS; DISTRIBUTION; FINITE ELEMENT METHOD; FORECASTING; FRACTURES; LAYERS; MICROSTRUCTURE; RANDOMNESS; SIMULATION; STRAINS; THICKNESS