Altair RISE

A program to recognize and reward our most engaged community members

Nominate Yourself Now!

Question on Optistruct and Radioss Solvers

Hi,

I am a new user of Radioss. I have used optistruct for few projects so far. I have a question regarding the two solvers.

As part of learning Radioss (Linear), I have solved some beam problems and some vibration problems. While doing so, I found that all the analysis problems that I solved in Radioss (Linear) could be solved in Optistruct (analysis).

My question is, why should we have two solvers that does the same thing? However, I understand that Radioss is useful in non-linear analysis. But my question is about Linear analysis.

Many thanks,

A-run

Find more posts tagged with

English

HyperMesh

Accepted answers

All comments

Altair Forum User

Hi,

actually this is the same solver (Bulk format as common input syntax). To a certan extend you can view it like this:

OptiStruct = Radioss + optimization capabilities.

So if your intention is doing linear (or non-linear) FE analysis only, you would use Radioss. But from a running Radioss model, it is only a few steps to setup an optimization problem. For that you would use OptiStruct (which is still FE based).

Regards,

Altair Forum User

Hettel,

That was very useful. Thank you very much.

I would rather stick with optistruct even for simple analysis (linear) and use Radioss exclusively for non-linear. Just to avoid asking questions to myself.

Many thanks,

Arun