Pretension

inasiopo

Dear all,

 

A pretension analysis is usually run before another non-linear analysis, as a first step of the same run.

 

Is there a way to run a pretension analysis (until the end), and then use the results later in a another analysis. So instead of running one after another on the same run, run pretension, then create/run subcases which will reference the pretension results.

Basically this becomes usuful if we want to change something in one subcase, then we won't have to run always the pretension step, but just use the results.

 

I hope it makes sense and thank you in advance for your help and valuable time,

Elias

Altair Forum User

Hi,

 

have you tried STATSUB(PRELOAD)?

 

This will include loads from preceding subcase in the current. 

inasiopo

Yes. We have the STATUSB(PRELOAD).

The problem is that this works in the same run. For example: We make a model file which has two loadsteps one for pretension and one case. So: Model1.fem --- Pretension run --- LoadCase 1

 

What we want is to have two models. One for the pretension only and one for the Loadcase only but that will use the results of pretension, So...: Model1.fem --- Pretension, Model2.fem -- Loadcase1, but we need to tell to Model2.fem to use results from Model1.fem. Is that possible??

 

Many thanks again,

Elias

Altair Forum User

Hi Elias,

 

One way is to export the deformed shape from HV and re-model with loads and Bcs (model 2) and run again.

 

I will let you know if there is any other better way after checking with experts.