Answered
0
0

I am doing a dynamic analysis in Abaqus Standard (Dynamic implicit method), in which, for each increment, we have to give nodal force from outside (or from a text file).

We can give a non-uniform distributed load using the DLOAD subroutine, but it applies to integration points, not nodes.

Another option is updating the input file with new nodal forces in each increment and running the jobs; then, the analysis becomes quasi-static

  • You must to post comments
Best Answer
4
1

You can add nodal force with concentrated force and change it during time via amplitude.

  • rojinmathews89
    But in that case, we don’t have a provision to control or update nodal force in each increment.
  • You must to post comments
1
0

By adding amplitude you can define the nodal force vs increment or as a function. If you do not know how the nodal force is changing during the time in the first of analysis and the nodal force has been defined based on the result during the time you need Amp subroutine or scripting.

  • rojinmathews89
    I can’t predict nodal force changing wrt time. I have to take the displacement of the previous increment, based on that, calculate nodal force to the next increment. So for each increment, I have to give nodal force, basically, I need control over nodal force in each increment. Issues of subroutine I already mentioned in my question. Through scripting, Whether I can update nodal force without affecting dynamic analysis?
  • Experts Of CAE Assistant Group
    You have mentioned the DLoad subroutine. You should use the UAMP subroutine to control amplitude during the time using the sensor.
  • You must to post comments
Showing 2 results
Your Answer

Please first to submit.