The 3D Hashin USDFLD subroutine is used in Abaqus to define failure criteria for composite materials based on the Hashin failure criteria and field variables (FV) for softening behavior. It allows you to specify the failure criteria for each ply of composite material in three dimensions (3D). This subroutine is particularly useful for analyzing the failure behavior of composite structures under various loading conditions in Abaqus simulations.

It is a functionally validated USDFLD subroutine that compares results with the Chang & Lessard failure criterion available in Abaqus documentation. This code identifies four damage modes including matrix tension, matrix compression, fiber tension, and fiber compression using the elastic constants.

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Fortran Abaqus subroutines run on Windows or Linux
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