If you have the Intel FORTRAN 11, you should be able to download older version from Intel website.

Hi, Jorgen: Thank you for your comments! My simulation has large motion in the beginning, then parts will contact with each other, so it is difficult ...

I guess Jorgen is talking about Abaqus 6.11. It is released now, but we dont have the media yet.

Yes, it is just a text file, you can write your umat code and then run your simulation with your code.

You must right, because I have never done that on Windows.

As far as I know, you can measure or assume the fiber orientation in the tissue. Holzapfel has many papers talking about that: [url

I dont think your step 1 and 2 are necessary, you only need those files. you can get them by unzipping the installation package (.exe file).