Calibration of *MAT_258 with a Lode dependent fracture surface and its application in bending of high-strength steel
*MAT_258 (*MAT_NON_QUADRATIC_FAILURE) is a through-thickness failure regularization model for shells in LS-DYNA. In this model the failure indicator is computed as a function of both the size of the element and its bending-to-membrane loading ratio. The constitutive behavior and fracture surface in *MAT_258 are represented by well-known analytical expressions which simplify calibration. We present the calibration process for *MAT_258 with a three-parameter Extended Cockcroft-Latham fracture surface for the high strength steel Docol 1500M. The material card is applied in shell element simulations of three-point bend tests.
https://www.dynalook.com/conferences/13th-european-ls-dyna-conference-2021/material-modeling/holmen_enodo.pdf/view
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Calibration of *MAT_258 with a Lode dependent fracture surface and its application in bending of high-strength steel
*MAT_258 (*MAT_NON_QUADRATIC_FAILURE) is a through-thickness failure regularization model for shells in LS-DYNA. In this model the failure indicator is computed as a function of both the size of the element and its bending-to-membrane loading ratio. The constitutive behavior and fracture surface in *MAT_258 are represented by well-known analytical expressions which simplify calibration. We present the calibration process for *MAT_258 with a three-parameter Extended Cockcroft-Latham fracture surface for the high strength steel Docol 1500M. The material card is applied in shell element simulations of three-point bend tests.
Holmen_Enodo.pdf
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