TY - JOUR
T1 - Implementing deformation, damage, and failure in an orthotropic plastic material model
AU - Shyamsunder, Loukham
AU - Khaled, Bilal
AU - Rajan, Subramaniam D.
AU - Goldberg, Robert K.
AU - Carney, Kelly S.
AU - DuBois, Paul
AU - Blankenhorn, Gunther
N1 - Publisher Copyright:
© The Author(s) 2019.
PY - 2020/2/1
Y1 - 2020/2/1
N2 - Theoretical and implementation details of an orthotropic plasticity model are presented. The model is comprised of three sub-models dealing with elastic and inelastic deformations, damage, and failure. The input to the three sub-models involves tabulated data that can be obtained from laboratory and/or virtual testing. In this article, the focus is on the development of the failure sub-model and its links to the other components. Details of how the user-selected failure criterion is used, and what steps are implemented post-failure are presented. The well-known Puck failure criterion is used in the numerical examples. Three validation tests are used to illustrate the strengths and weaknesses of the failure sub-model—10°, 15°, and 30° off-axis tests, a stacked-ply test carried out at room temperature under quasi-static loading, and finally, a high-speed impact test. Results indicate that while the deformation and damage sub-models give reasonably accurate results, the failure predictions are a huge challenge especially for high-speed impact tests.
AB - Theoretical and implementation details of an orthotropic plasticity model are presented. The model is comprised of three sub-models dealing with elastic and inelastic deformations, damage, and failure. The input to the three sub-models involves tabulated data that can be obtained from laboratory and/or virtual testing. In this article, the focus is on the development of the failure sub-model and its links to the other components. Details of how the user-selected failure criterion is used, and what steps are implemented post-failure are presented. The well-known Puck failure criterion is used in the numerical examples. Three validation tests are used to illustrate the strengths and weaknesses of the failure sub-model—10°, 15°, and 30° off-axis tests, a stacked-ply test carried out at room temperature under quasi-static loading, and finally, a high-speed impact test. Results indicate that while the deformation and damage sub-models give reasonably accurate results, the failure predictions are a huge challenge especially for high-speed impact tests.
KW - Orthotropic composite
KW - failure modeling
KW - impact loads
KW - plasticity
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U2 - 10.1177/0021998319865006
DO - 10.1177/0021998319865006
M3 - Article
AN - SCOPUS:85070399373
SN - 0021-9983
VL - 54
SP - 463
EP - 484
JO - Journal of Composite Materials
JF - Journal of Composite Materials
IS - 4
ER -