Error 1487 - Optristruct

Altair Forum User

Hello,

 

I'm trying to run the tutorial on this Youtube video: 

 

 

 

 

When I get to the part where I run Optistruct (+-min 24), I get the following error:

 

 *** ERROR # 1487 *** in the input data:
 Continuation card not allowed.

 

Can anyone help me?

 

Thank you very much!

 

Gonçalo

 

 

Altair Forum User

Hi,

 

Can you share the .fem file please?

Altair Forum User

Hello Prakash!

 

Thank you for your answer!

 

The file is attached. I downloaded it from Altair's website.

 

Thank you very much!

Unable to find an attachment - read this blog

Altair Forum User

On the tutorial, on the minute mentioned above, the file is the file named: 02_analysis_complete

Altair Forum User

Hi,

 

Go to loadsteps>> Edit the first load step and remove the continuation line for STRESS and try again.

Altair Forum User

Thank you for you answer Prakash! I can now run the simulation.

 

What I can't get it's the composite failure, strain etc... I have the Global Output Request setup as told on the tutorial.

 

Do you think you can further assist me?

Altair Forum User

I think I have it now, I was running it without propper setting up.

 

Sorry to bother you, thank you for your help!

Altair Forum User

OK, thank you for the update /emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20'>

 

e20407

Altair Forum User said:

Hi,

 

Go to loadsteps>> Edit the first load step and remove the continuation line for STRESS and try again.

Sorry I don't know where to remove the continuation line for STRESS

may you show me in a photo?

 

 

thanks

 

Simon Križnik

Hi @e20407

 

the continuation line for STRESS is under OUTPUT

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

e20407

Altair Forum User said:

Hi @e20407

 

the continuation line for STRESS is under OUTPUT

 

thanks

e20407

Sorry

I got one more question in the same video(23:20-23:55)

 

 

 

I  do as the video and remove the continuation line for Stress

 

but it didn't show up at Composite Strains and Composite Stress

 

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

 

 

 

 

Simon Križnik

For PCOMPP, the SOUT field (result request) on the corresponding PLY entries should be set to YES.

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

Unable to find an attachment - read this blog

e20407

Altair Forum User said:

對於PCOMPP，相應PLY條目上的SOUT字段（結果請求）應設置為YES。

 

Thank you so much.

 

Unable to find an attachment - read this blog

e20407

HELLO
Can I import my 3D CAD file into Composite analysis directly? My 3D CAD has thickness, but in HyperMesh example, it’s a pure surface. Does that mean I need to make my file a non-thickness CAD?

Simon Križnik

Hi,

 

you can import 3D cad file into Hypermesh and automatically extract midsurface and assign thickness.

Insider July Featured Tip and Trick

https://altairuniversity.com/7196-advanced-midsurface-training-material/

 

e20407

hello Hyperman

I've prepared another non-thickness CAD with surface only.

When I pre mesh, I can see the whole surface is meshed, but after I click 'return', there's some area lost the mesh

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

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

 

 

 how can i fixed it?  thanks

 

 

Simon Križnik

I think the mesh is there- it just looks like it's lost because the surface geometry is obscuring the mesh. Hide the surface or display wireframe geometry to verify.

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

e20407

Hi Hyperman,

 

1. Can I set force and SPC on the modal surface like picture below? 
(I find an example at 42:42 in this video,  

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

 

 

2. I've already checked the mesh, and it is there. But after I put composite laminate on my model, it's broken like this 

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

 

 

3. However, I skip this problem and proceed to click 'OptiStruct', there are lots of Error#15.
<?xml version="1.0" encoding="UTF-8"?>

 

I'll be really appreciate if you can check my file in the link below
(https://)

Thank you

Simon Križnik

Hi,

 

1. Constraints and loads applied on single nodes will cause stress singularity. For more details refer to: 

https://www.comsol.com/blogs/singularities-in-finite-element-models-dealing-with-red-spots/

 

2. and 3. are due to bad mesh. You should remesh the model  using the these tools:

• Geom>autocleanup to clean up the geometry
• 2D>automesh>QI  optimize (F12) to mesh using quality criteria
• 2D>elem cleanup
• 2D>qualityindex
• tool>check elems>2D (F10) to check elements

There are more then 4 million elements in the model you shared. Reduce the element count (increase element size), unless you have access to supercomputer to solve this model in a reasonable time.

 

There are some great learning materials from Altair university- Practical Aspects of Finite Element Simulation is a good starting point.

https://altairuniversity.com/free-ebooks-2/

 

Check the following Youtube channels:

Altair University

Altair India Student Contest

ELEATION By Apoorv Bapat

https://altairuniversity.com/wp-content/uploads/2012/04/HM_Geometry_extract.pdf

https://altairuniversity.com/wp-content/uploads/2014/02/HM_Automeshingintro.pdf

https://connect.altair.com/CP/SA/training/self_paced/aero_v13/PDF/chapter4_demonstration.pdf

 

The Like button is an easy way to show appreciation for a post /emoticons/default_wink.png' srcset='/emoticons/wink@2x.png 2x' title=';)' width='20' />

suraj123

getting this error again and again what is error and how to resolve please help

 

Messages for the job:

 

 *** See next message about line 16 from file:
     C:/Users/Desktop/air.fem
  'STRESS(COMPLEX,ALL,CENTER,,,,,'
 
 *** ERROR # 1487 *** in the input data:
 Continuation card not allowed.

 

Rahul Rajan_21763

Just deactivate stress & strain output from global output request. Since this is a composite material CSTRESS & CSTRAIN should be fine.