Add or remove objects during simulation 2

[Heelloo]

Is it possible in ANSYS to add a geometry during a simulation? For example, if at a certain time during simulation a maximum stress is reached, some supporting objects automaticly appear at the point of highest stress. Or is there a way to implement a script which runs during simulation?

If you don't understand the question, please tell me. English obviously isn't my mother tongue.

Thanks in advance for every answer!

 

[Stanum]

You could try using ekill / ealive command. During the first load step kill the support structure you want to introduce. When the parameter you a monitoring reaches resurrect these elements. For more information browse ansys help on these commands. There is an example input file there.
You will probably have to divide your solution in to several steps, not to miss the point when your support has to be revived.
But this may not work in case you unsupported element types or due to some other limitation.
You may also consider placing a contact elements between two surfaces that will interact , and in such a way you can omit usage of this command.

 

[Heelloo]

Thank you very much for the useful hint!

EKILL and EALIVE work fine. Now I want the EALIVE to take place automaticly by using an IF command that checks whether the stress is already too high. What command can I use to check maximum stress on the "solve" layer (not postprocessing layer)?

My problem could also be solved by a user defined contact area. Does this exist in ANSYS?

 

[Stanum]

You can try *get command, I suppose it will work in /solve. Or you can use save command then work in post an then use restart analysis option.
Of you can expand on what you understand by user defined area, then I can be more specific. But on the whole ansys has quite robust contact capabilities. You can use different type of contact options: such as surface to surface/ node to surface, node to node etc., also you can set the size of contact detection zone and many other parameters. I would recommend you reading contact analysis guide in ansys help and also help on contact elements type cont17x. Then you will have general idea of what contact pairs in ansys are capable of. (Examples with contact implementation in verification manual can also be of some use).