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Hello, I need help getting a code in python or Fortran for elastic stiffness to calculate the shear modulus at varying mean effective stress by the Hardin formula in Abaqus. Can anyone help regarding this, or else from where I can learn to code?
Regards.
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Hello,

First, you need to determine the equations you want to implement in your coding to decide which one is suitable for your work, python or Fortran.

Second, if you do not have enough knowledge of how to write python code or Fortran, I recommend checking the links below. These will teach you professionally python coding and Fortran to get what you need for your current and future problems.

Python scripting in ABAQUS Part1

this one is for python.

Introduction to USDFLD and VUSDFLD Subroutine

UMAT Subroutine (VUMAT Subroutine) introduction

and these two are suitable for Fortran according to your problem.

If you do not need any of those above, refer to the link below. The experts of this website can help you out.

consultancy

Best wishes.

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