how to link fortran program with abaqus

[skrishna]

HI guys.
I have just started using ABAQUS for my research and going through the manual.
I wish to know how to link fortran program( self made) with abaqus.

And do anybody know how to simulate welding using ABAQUS. please send some tutorial . that will be very helpful in my personal id
shreekrishna@gmail.com
thanks in advance
bye
shree

[Jorgen]

ABAQUS can understand certain specific Fortran subroutine formats (e.g. UMAT, VUMAT, UHYPER, ...). To use a subroutine in either of these formats you first need to save your code into a separate fortran file. Then you can simple have ABAQUS compile and use your subroutine by using the following command:

abaqus job=[name_of_input_file] user=[name_of_fortran_subroutine]

Also, there are two other alternatives that use object-code or shared-library format. You can read about these different ways in the ABAQUS documentation.

Best of luck,
Jorgen

[sq]

One additional tip:

You can use your user-defined subroutine when operating through ABAQUS CAE as well. When defining a job (or editing one in the Job Manager), the last line in the "General" tab allows you to type in or select the "User subroutine file". This does the same thing as what Dr. Bergstrom has already told you, I just mention it for convenience.