Aeroelastic Optimization Setup

DR31415

Hi, 

I am attempting to set up an aeroelastic optimization within HyperStudy. Although I am having trouble setting up responses involving the damping and frequency values provided from the Flutter Analysis output file *.FLT

I want to monitor all the modes within the *.FLT file and check for Static Divergence and Dynamic Flutter. As a result, I would like HyperStudy to read the entire columns of Damping and Frequency values for a given Mach number and Density ratio. The Hyper Study built-in Data Source extractor does not recognize the *.FLT file and as a result forces the reader Tool to "ASCII Extract". I could not figure out a way how to read vectors of data using this Tool. The best I could achieve is single values across all the modes aka a vector size [1,n] where n is the number of modes.

Does anyone know how I can achieve this? or Know of a better way to set up an Aeroelastic Optimization within HyperStudy? 

Regards,

David

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I have attached a simplified FEM of a cantilever plate with a PK Flutter analysis setup. If you want to give it a try.

Adriano_Koga

Unfortunately I don't see any direct way of extracting these modes directly.

Maybe Compose could be called in batch mode to extract data from the .flt file? Although it would need some data parsing as well, it could handle the data much easier, generating a simple .txt or .csv in the end.

DR31415

Adriano A. Koga_21884 said:

Unfortunately I don't see any direct way of extracting these modes directly.

Maybe Compose could be called in batch mode to extract data from the .flt file? Although it would need some data parsing as well, it could handle the data much easier, generating a simple .txt or .csv in the end.

Hi Adriano, 

Thanks for the suggestion. That is similar to what I ended up doing. I wrote a script in Python that essentially does everything and outputs exactly what I want as an output response within HyperStudy. This seems to have done the trick.

Regards,

David