I have a measured the young modulus and yield strength of a material at different points. What would be the best way to apply spatially varying material properties along a mesh by interpolating the properties at this measured points in Abaqus?
-Since I want varying plastic properties, *distribution will not work.
-I would rather not use my own UMAT so I can try different plasticity models from Abaqus.
-Doing it with a USDFLD just seems very complex for spatially interpolating between more than 2 points.
Is creating an element set for every element the only way? Is this computationally very expensive for the solver or only the input file pre-processor?
Thank you
Luis Reig Buades, There are two main ways to spatially interpolate mechanical properties in Abaqus between several points without using a UMAT or USDFLD
To use field variables to spatially interpolate mechanical properties, you will need to create a field variable for each material property that you want to interpolate. If you have a relatively small number of unique sets of properties, then using element sets is a simple and straightforward approach. However, if you have a large number of unique sets of properties, then using field variables is likely to be more efficient. Last but not least, spatially interpolating material properties between several points without using a user-defined material subroutine (UMAT) or a USDFLD subroutine can be challenging, especially if you have multiple points. While creating an element set for every element is one way to achieve spatially varying material properties, it can indeed lead to a large input file, which may be cumbersome to manage and could potentially slow down the pre-processing stage. The computational cost during the solver phase will depend on the size and complexity of your model but is typically not significantly impacted by the number of element sets. I hope it helps !
Luis Reig Buades, In temperature-independent analysis with zero thermal expansion, an initial temperature field can be used to specify the spatial distribution of temperature-dependent mechanical properties. This is more convenient, because Abaqus/CAE interface can be used. Predefined field variables are not supported in Abaqus/CAE and can be specified only in .inp file.
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