Yes, it is possible to vary the elastic modulus with shear strain using field variables in Abaqus. This can be achieved by defining a User Material (UMAT) subroutine. In the UMAT subroutine, the elastic modulus can be defined as a function of the shear strain or any other field variable. To implement this, the UMAT subroutine needs to be linked to the Abaqus input file and the user-defined material properties should be defined in the input file. In the UMAT subroutine, the elastic modulus can be defined as a function of shear strain or any other field variable. The user-defined material properties defined in the input file can be accessed in the UMAT subroutine using the variable names provided in the input file.

Yes, it is possible to vary the elastic modulus with shear strain using a field variable in ABAQUS. One way to do this is by defining a user subroutine that modifies the elastic modulus based on the shear strain.

Here is a brief overview of the steps involved:

Define a field variable to represent the shear strain in the model. This can be done using the *INITIAL CONDITIONS or *BOUNDARY CONDITIONS keyword in the input file.

Write a user subroutine to modify the elastic modulus based on the shear strain. This subroutine should be written in Fortran and compiled using a Fortran compiler that is compatible with ABAQUS.

Define the user subroutine in the ABAQUS input file using the *USER MATERIAL or *MATERIAL keywords.

Assign the modified material properties to the appropriate elements in the model.

Here is an example of how the user subroutine might be structured: attach