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Does anyone know how to use the VUMAT ABAQUS subroutine to modify the density of material during a deformation process in a certain strain range, for example (when strain rises from 0.1 to 0.2)?

CAE Assistant in Social Media Abaqus   ResearchGate   USDFLD   VUMAT   changing density
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Hello,

You cannot change density in the VUMAT subroutine. In the VUMAT subroutine, you must specify density to run the job. If you need to change the density or define it as a function of different variables such as time, etc., you must use the USDFLD or VUSDFLD subroutine. Refer to the link below. With this package, you will learn anything you need to know about the USDFLD, along with some examples.

https://caeassistant.com/product/usdfld/

Best wishes.

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