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MMTUser1

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- Tips and suggestions regarding FE simulation of cyclic loading in a tensile test which should display hysteresis trend in the force-displacement curve

I am currently working on a FE simulation project where a tensile test of DP800 steel is subjected to cyclic loading.

It utilizes Yoshida Uemori model (YUM) to formulate the modulus of elasticity (E) to simulate the hysteresis caused by cyclic loading.

We are using a USDFLD subroutine in ABAQUS CAE to formulate the E according to the cyclic loading i.e. using a FORTRAN code, we save the ratio of 'current E' (using YUM) to 'initial E' as a state variable to simulate the process using this ratio. The code recognizes the loading and unloading stages in the curve correctly after checking the PRINT statements in it.

To check the FORTRAN code, we used a RVE (a simple cube element). Original YUM formula mentioned in the research paper works correctly. The modified YUM formula gives incorrect result.

I would highly appreciate any tips or suggestions as how to simulate this process correctly. Or how I can test/check the various parameters to ensure the correct simulation of the process.

Thank you.

It utilizes Yoshida Uemori model (YUM) to formulate the modulus of elasticity (E) to simulate the hysteresis caused by cyclic loading.

We are using a USDFLD subroutine in ABAQUS CAE to formulate the E according to the cyclic loading i.e. using a FORTRAN code, we save the ratio of 'current E' (using YUM) to 'initial E' as a state variable to simulate the process using this ratio. The code recognizes the loading and unloading stages in the curve correctly after checking the PRINT statements in it.

To check the FORTRAN code, we used a RVE (a simple cube element). Original YUM formula mentioned in the research paper works correctly. The modified YUM formula gives incorrect result.

**[Mentor Note: link deleted]**I would highly appreciate any tips or suggestions as how to simulate this process correctly. Or how I can test/check the various parameters to ensure the correct simulation of the process.

Thank you.

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