Numerical and Experimental Validation of a New Damage Initiation Criterion

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    Most commercial finite element software packages, like Abaqus, have a built-in coupled damage model where a damage evolution needs to be defined in terms of a single fracture energy value for all stress states. The Johnson-Cook criterion has been modified to be Lode parameter dependent and this Modified Johnson-Cook (MJC) criterion is used as a Damage Initiation Surface (DIS) in combination with the built-in Abaqus ductile damage model. An exponential damage evolution law has been used with a single fracture energy value. Ultimately, the simulated force-displacement curves are compared with experiments to validate the MJC criterion. 7 out of 9 fracture experiments were predicted accurately. The limitations and accuracy of the failure predictions of the newly developed damage initiation criterion will be discussed shortly.

    Original languageEnglish
    Article number012080
    JournalJournal of physics: Conference series
    Issue number1
    Publication statusPublished - 27 Sept 2017
    Event36th International Deep Drawing Research Group Conference, IDDRG 2017 - Leonardo Hotel Royal Munich, Munich, Germany
    Duration: 2 Jul 20176 Jul 2017
    Conference number: 36


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