An example for Dload subroutine in Abaqus

Here an example of the Dload subroutine in Abaqus is provided. Here, a constant circular shape load is applied on a plane. The plane is fixed from the edges and because of the load you can see it bend from the middle section. In addition, in the PowerPoint file, you can find good information about the subroutine code. If you think you need more background it might be a good idea to see the other video about the subroutine.
Using the Dlaod subroutine allows you to apply load with different distribution which can be dependent on the geometry of part and time as well. To use subroutine we need to use FORTRAN code and also Abaqus needs to be linked to Intel FORTRAN. The video is short so you can learn this in less than 15minutes
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[@theluis469]

The time(2) for the second point is 2.5 not 3.5 as mentioned in the video at 2:25

[@hyperlyceum60]

Yes it was a mistake, Thank you for your comment.

[@luzaguilar2139]

Hi, I followed it and didnt get the same results. I even changed the formulation to 3D stress and changed the part to a solid one and I have the same bad result…some stress in one of the corners and thats it. but thanks for the videos, i will keep trying!

[@hyperlyceum60]

Hi, For more help you can ask your question here: hyperlyceum.com/question/category/abaqus/

[@luzaguilar2139]

@CivilAcademia I think that the equation that is used is not ok. I tried the tutorial twice and made other tutorial with the same subroutine and a different script and it did work. So im sure that is the problem.

[@luzaguilar2139]

@CivilAcademia thanks!

[@rs4race]

I fixed this by moving the center of the part to the origin, if you have the corner of the part on the origin you will have to make an adjustment to the formula. I experimented with this a little bit by changing it to: If((x+.1)**2+(y+.1)**2

[@luzaguilar2139]

@@rs4race thanks! I will try it!

[@ernminpeck]

If I want the load to vary with time, is it possible to use the Dload subroutine?

[@rezatangestani2742]

Yes, You can. you can use time(1) or time (2) (I have explained the difference in the video) to control time. For example, if you need to decrease the load by time (your step time should be 1 second): F=F*(1-(TIME(1))