Issues with Student version

Altair Forum User

Hello,

I am using Hyperworks student version 2017. while working on tutorial for 'Beam – bending exercise using HyperBeam', using Radioss. I got following issues (solver gives only 1 warning, no errors): 

1. h3d file for hyperview is missing (not generated)

2. to get h3d file, different sources talk about analsyis>control cards>output or format or global_control........... I do not see any of these.....I have attached images of control cards I can see. 

 

 

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Altair Forum User

Hi,

For the RADIOSS solver to run, an engine file is required. The engine file executes the actual computation and it contains the run controls (e.g. termination time, animation output requests).The engine produces output files for animation, plotting (time history), and restart.

All these run control parameters are available in the control cards which is shown above in the images.

The ENG_RUN control card is the engine keyword where the user specifies the total run time. Once the total run time is complete .h3d file will be generated.

ENG_ANIM_DT  is the engine keyword where user specifies frequency of writing animation files.  As an example, suppose the total run time is 100 milliseconds and user requires 25 animation files in between the run, in ENG_RUN card user has to specify .1 (in seconds) in Tstop and in ENG_ANIM_DT card user has to specify .004 at Tfreq so that 25 animation files will be created. Also, you can specify these control cards in solver browser.

Please go through http://www.altairuniversity.com/wp-content/uploads/2016/11/Crash_Box_1.pdf tutorial where all these steps are shown.

Altair Forum User

Thanks George. I have tried to follow the steps, but still no h3d file. I am following a very basic and simple altair tutorial (file attached) . 

Input file looks like this:

/VERS/120
/RUN/1D_Beam_Bending/0/
1.00000000000000    
/ANIM/DT
0.000000000000000    0.020000000000000 

 

I have attached screenshots of my model set up and generated files as well.  

 

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Unable to find an attachment - read this blog

Altair Forum User

Does anyone now how to create a simple surface like Rectangle(not square) using 4 nodes in hyperworks?

Altair Forum User

Hi,

If you are following the tutorial attached it is solved in OptiStruct, and not RADIOSS.

In the screenshot attached also we can see that you have defined loadstep which is for OptiStruct. Please make sure you are in OptiStruct user profile and remove all control cards (ENG_ANIM_DT, ENG_RUN...etc) and run in OptiStruct. If you can share the model file we can review and rectify the errors.

 

Create the nodes for the rectangle by providing the  x, y ,z coordinate values. And you can use ruled option to create a surface from nodes, lines or in any combination.

Altair Forum User

thanks George for the clarification. I have completed this tutorial successfully in Optistruct now. However I would like to point out that this tutorial asks to set profile as 'Radioss' (pic attached for ref), which is odd. 

Thanks again. 

<?xml version="1.0" encoding="UTF-8"?>

Altair Forum User

Hi,

In the earlier versions there was no separate OptiStruct user profile for linear static analysis problems. It was RADIOSS (Bulk) and later. I think from HyperWorks version 12.0 onwards, it was made under OptiStruct user profile. Unfortunately this tutorial was not updated but it will be done very soon.