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SeKar

TIME STEP LESS OR EQUAL ZERO

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Hi,

i'm trying to simluate an carbon fibre crash structure with RADIOSS V10.
The calculations are stopped with the error message: 

 

NODE       7501 DE-ACTIVATED FROM INTERFACE
  **ERROR : TIME STEP LESS OR EQUAL ZERO
 
What does that mean? What do i have to do in order to solve this Error?

Thank you in advance!

SeKar

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Thank you for your fast reply. 
I'm an absolut beginner in the world of simulations. That's why i am thankful for every help and support!
Attached to this post is the OUT file. 

 

I haven't created any connections between the layers. I only created a contact interface.

Please let me know if you need any more information.

 

qwertz_0001.out.txt

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Okay, 


 


what type of contact are you using?


 


can you increase the gap between the components with contact surfaces and check if that helps?


 


if you are using type 7 contact can you check with a gapmin= 0.1 or up 0.5?

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I'm using contact type 7.

Thanks to an other helper (Employee of Altair - not sure if i'm allowed to say the name..) i finally got the solution. My mistake was in the contact interfaces:
Changes were done in the following categories:
* stiffness definition
* Node and segment deletion
* friction penatly formulation

Furthermore the engine file was adjusted: the scale factor and the minimum time step have been decreased.

But thank you Prakash Pagadala for your fast help! 
 

DAMIR88 likes this

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