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Incremental strain zero in UMAT

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  • Incremental strain zero in UMAT

    Hi All,

    I have implemented a damage mode for non-linear elastic composite in LS-Dyna. However, I found that the incremental strain in the loading direction is zero in the local (UMAT) coordinate, and has a unique (and increasing) value in the global coordinate. Please can anyone advice on this? THanks

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