Crack path prediction in rolled aluminum plates with fracture toughness orthotropy

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Title	Crack path prediction in rolled aluminum plates with fracture toughness orthotropy
Subtitle	Specimen with hole and crack, geometry parameter e0 = 18 mm
Author	Judt, Paul Ricoeur, Andreas
License	CC Attribution 3.0 Germany: You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
Identifiers	10.5446/15733 (DOI)
Publisher	Universität Kassel, Institut für Mechanik
Release Date	2014
Language	English
Producer	Judt, Paul
Production Place	Kassel

Subject Area	Engineering
Abstract	The J-integral has been implemented as a post processor into the commercial FE code ABAQUS. An automatic geometry reconstruction and intelligent remeshing procedure is applied. The crack tip is shifted by constant increments da. The J-integral is used to determine crack tip loading quantities such as stress intensity factors or the energy release rate. Crack paths are predicted applying a modified maximum energy release rate approach accounting for the fracture toughness orthotropy in rolled plates of aluminum alloy Al-7075-T651 where the anisotropy of elastic constants is negligible. A specimen with crack and hole is investigated. Young's modulus is E = 72000 MPa and Poisson's ratio is nu = 0.3. The vertical distance between crack and the holes center is e0 = 18 mm.
Keywords	J-integral crack propagation crack paths mixed-mode fracture fracture toughness anisotropy